The document provides information on gas absorption heat pumps (GAHP), including:
1. It describes the technology of GAHPs, which use a gas burner to heat an ammonia-water solution, generating ammonia vapor to extract heat from low temperature sources and release it at higher temperatures.
2. It discusses different types of GAHPs and their benefits over electric heat pumps, such as higher efficiencies and the ability to use natural gas.
3. It provides examples of GAHPs integrated into new hospital and school building projects to generate renewable heating and cooling and reduce carbon emissions.
The document discusses heat pumps and the UK's Renewable Heat Incentive (RHI). It provides information on how heat pumps work by extracting low-grade heat from various sources and concentrating it. It compares the efficiencies and costs of different heat pump and heating systems. It also outlines the RHI scheme which provides long-term financial incentives for renewable heat technologies like heat pumps and solar thermal to encourage switching from fossil fuels.
This document provides an overview of air to water heat pump technology. It discusses how air to water heat pumps work by capturing heat from the outside air and transferring it inside to heat or cool a building. The document also covers the benefits of air to water heat pumps such as using renewable energy, providing heating, cooling and hot water from one system, and significant savings in energy costs compared to gas or oil systems. It provides details on the components of air to water heat pump systems including inverters, compressors, and controls.
The document discusses heat pump systems and compares their costs to traditional heating methods. It provides cost comparisons for heating domestic hot water and swimming pools using electric heaters, gas boilers, solar heaters, and air-to-water heat pump systems. The heat pump systems can cut heating and cooling costs by up to 70% and pay for themselves within 3 years through energy savings. They also provide free cooling and heating of domestic water in addition to primary heating/cooling functions. Installation examples of heat pump systems are shown for various projects in Dubai, the UK, and Spain.
This presentation introduces the principle of an air source heat pump, the key parts of the heat pump system and shows some examples of how heat pumps saves your money and protects the environment.
Heat pumps use ambient heat from air, water, or ground as a primary energy source to provide heating and cooling for buildings and industrial processes. They work by transferring heat from one place to another using the refrigeration principle and are more efficient than conventional energy systems. Common applications include space heating/cooling, hot water heating, and industrial processes like sterilization. Case studies show heat pumps provide significant cost savings over electric heating systems and reduce CO2 emissions.
An Introduction to Air to water, Air Source, Heat Pump SystemsSpaceAir
The document provides an introduction to air to water heat pump systems. It discusses how air to water heat pumps work, different system types and layouts, industry standards, case studies, and benefits of air to water heat pumps. It also covers topics like controls, installation requirements, efficiencies, and examples of outdoor/indoor unit installations.
WORKING OF HEAT PUMPS WITH (CO2) REFRIGERANT Swathi Rampur
The document discusses heat pumps, which transfer heat from one place to another against a temperature gradient using external energy. It describes the typical components of a heat pump - evaporator, compressor, condenser, expansion valve - and how they work together in the heating and cooling cycles. Carbon dioxide is highlighted as a natural, non-toxic refrigerant with advantages over traditional refrigerants like Freon, though it requires higher operating pressures. The document concludes that heat pumps using carbon dioxide as the refrigerant can provide efficient and environmentally friendly heating and cooling.
This document provides information about Calorex, a UK manufacturer and market leader in heat pump technology. It discusses Calorex's company profile, the benefits of heat pumps compared to traditional heating systems, their product ranges including air source and ground source heat pumps, and case studies of heat pump installations. Key points include that Calorex has manufactured over 250,000 heat pumps, has a large R&D investment, and their heat pumps can provide significant savings on running costs and carbon emissions compared to gas, oil or electric heating.
The document discusses heat pumps and the UK's Renewable Heat Incentive (RHI). It provides information on how heat pumps work by extracting low-grade heat from various sources and concentrating it. It compares the efficiencies and costs of different heat pump and heating systems. It also outlines the RHI scheme which provides long-term financial incentives for renewable heat technologies like heat pumps and solar thermal to encourage switching from fossil fuels.
This document provides an overview of air to water heat pump technology. It discusses how air to water heat pumps work by capturing heat from the outside air and transferring it inside to heat or cool a building. The document also covers the benefits of air to water heat pumps such as using renewable energy, providing heating, cooling and hot water from one system, and significant savings in energy costs compared to gas or oil systems. It provides details on the components of air to water heat pump systems including inverters, compressors, and controls.
The document discusses heat pump systems and compares their costs to traditional heating methods. It provides cost comparisons for heating domestic hot water and swimming pools using electric heaters, gas boilers, solar heaters, and air-to-water heat pump systems. The heat pump systems can cut heating and cooling costs by up to 70% and pay for themselves within 3 years through energy savings. They also provide free cooling and heating of domestic water in addition to primary heating/cooling functions. Installation examples of heat pump systems are shown for various projects in Dubai, the UK, and Spain.
This presentation introduces the principle of an air source heat pump, the key parts of the heat pump system and shows some examples of how heat pumps saves your money and protects the environment.
Heat pumps use ambient heat from air, water, or ground as a primary energy source to provide heating and cooling for buildings and industrial processes. They work by transferring heat from one place to another using the refrigeration principle and are more efficient than conventional energy systems. Common applications include space heating/cooling, hot water heating, and industrial processes like sterilization. Case studies show heat pumps provide significant cost savings over electric heating systems and reduce CO2 emissions.
An Introduction to Air to water, Air Source, Heat Pump SystemsSpaceAir
The document provides an introduction to air to water heat pump systems. It discusses how air to water heat pumps work, different system types and layouts, industry standards, case studies, and benefits of air to water heat pumps. It also covers topics like controls, installation requirements, efficiencies, and examples of outdoor/indoor unit installations.
WORKING OF HEAT PUMPS WITH (CO2) REFRIGERANT Swathi Rampur
The document discusses heat pumps, which transfer heat from one place to another against a temperature gradient using external energy. It describes the typical components of a heat pump - evaporator, compressor, condenser, expansion valve - and how they work together in the heating and cooling cycles. Carbon dioxide is highlighted as a natural, non-toxic refrigerant with advantages over traditional refrigerants like Freon, though it requires higher operating pressures. The document concludes that heat pumps using carbon dioxide as the refrigerant can provide efficient and environmentally friendly heating and cooling.
This document provides information about Calorex, a UK manufacturer and market leader in heat pump technology. It discusses Calorex's company profile, the benefits of heat pumps compared to traditional heating systems, their product ranges including air source and ground source heat pumps, and case studies of heat pump installations. Key points include that Calorex has manufactured over 250,000 heat pumps, has a large R&D investment, and their heat pumps can provide significant savings on running costs and carbon emissions compared to gas, oil or electric heating.
Heat pumps are devices that move thermal energy in the opposite direction of spontaneous heat flow by absorbing heat from a cold space and releasing it to a warmer one. There are two main types of heat pumps - vapor compression cycles which use a compressor to move heat and vapor absorption cycles which use a heat source like gas or steam instead of electricity to run the pump. Heat pumps have various applications like space heating and cooling, domestic hot water, industrial processes, and more. They are evaluated based on their coefficient of performance and energy efficiency. While efficient when temperatures are similar, noise from mechanical components and efficiency limits due to thermodynamics present issues.
This minute lecture introduces heat pumps as a best practices for heating and cooling buildings. According to UIE, more widescale use of heat pumps could save 1,200 million tonne of greenhouse gas emissions per year on a global scale, and represents one of the largest potential savings that any single technology can offer.
The document discusses heat pumps, including an overview of heat pump technologies used in Europe. It describes how heat pumps work by transferring heat energy and having a higher coefficient of performance than electric resistance heating. The document also discusses factors to consider for heat pump installation such as indoor air handling, refrigerant charge, outdoor unit placement, and controls. Maintenance recommendations include cleaning filters, coils, fans and inspecting ductwork. A case study examines using a heat pump versus a diesel boiler and air conditioner for a 550 square meter residential building.
Presentation on Heat pump and its Function.Monjur Ayon
The discussion are also include about heat pump with its different function,type of heat pump,working procedure,application of heat pump,main component of heat pump.
Air source heat pumps absorb heat from outside air, even at temperatures as low as -15°C, and use this heat to warm buildings. They work by extracting heat from the air into a fluid using an evaporator, compressing the heated fluid into a gas using a compressor, transferring the heat to radiators or underfloor heating via a condenser, then cooling and recycling the fluid. While more efficient than electric heating, air source heat pumps require electricity to run and their efficiency decreases in very cold temperatures.
Heat engines transform heat into work using two energy reservoirs at different temperatures. They include car, truck, jet, and rocket engines as well as steam engines and turbines. Heat engines have a maximum possible thermal efficiency known as the Carnot efficiency, which depends on the temperatures of the reservoirs. Refrigerators, which are heat engines run in reverse, also have a maximum coefficient of performance given by the Carnot coefficient of performance. The most efficient heat engines and refrigerators are Carnot engines, which operate through reversible cycles between the reservoirs. Common heat engine cycles include the Otto, Diesel, Brayton, and Stirling cycles. Steam turbines are widely used to generate electricity and use the Brayton cycle.
The document discusses cogeneration and waste heat recovery. Cogeneration, or combined heat and power (CHP), simultaneously generates electricity and useful heat. Trigeneration adds cooling to CHP. Cogeneration improves efficiency and reduces emissions and costs. Waste heat recovery units transfer heat from high-temperature processes to improve efficiency. Common applications of waste heat recovery include preheating, steam generation, and power generation. Cogeneration offers economic and environmental benefits over conventional power generation.
Heat engines for 10th standard new syllabusSwasthik Udupa
Introduction to heat engines .Working of 4 stroke engines, 2 stroke engines, petrol engines, diesel engines. Some advantages and disadvantages of these engines.
Cooling applications of solar system pptvikramdangi
This document provides an overview of solar cooling applications using absorption systems. It describes the basic components and processes of simple and practical vapour absorption systems using examples like ammonia-water. It discusses properties of ideal refrigerants, absorbents, and their combinations. Some advantages of absorption systems over compression systems are their lack of moving parts, ability to operate on thermal energy alone, suitability for large capacities, and controllability. Passive cooling techniques to reduce heat transfer and remove unwanted heat from buildings are also briefly covered.
Water Efficiency in Thermal power PlantAtanu Maity
This document summarizes cooling technology options for thermal power plants in India and their relative costs and impacts. It discusses that water is essential for thermal power generation but many existing plants face water shortages. Wet cooling systems like induced draft and natural draft cooling towers are most common, but dry cooling using air-cooled condensers is an option where water is extremely limited. Dry cooling systems have higher capital and operating costs and lower efficiency however. The document recommends wet cooling towers for most Indian plants to reduce water use while maintaining efficiency.
Thermal Efficiency of Buildings - Stefan Huber - Paul Heat Recovery ScotlandEuro Energy Services
At Euro Energy Services Renewable Energy in Scotland Open Day on October 23rd Stefan Huber talked about how the thermal efficiency of buildings and why well designed ventilation is vital to buildings.
At Euro Energy Services Renewable Energy in Scotland Open Day on October 23rd Thomas Dickson of Glow Worm discusses Air Source Heat Pumps and their application in dwellings across the UK
Feedwater Heater Control: Bring Your Efficiency to a New Level -- Kevin Hambrice, Global Factory Sales and Marketing Manager-Level, K-TEK, A Member of the ABB Group
Tata Lucknow implemented a waste heat recovery project to capture heat from the exhaust of 3 ovens - an ED oven, TC oven 1, and TC oven 2. Heat recovery units were installed on each oven and recover a total of 828,100 kcal/hr of heat. This recovered heat raises the temperature of water used in the PT coating line from 85C to 95C, reducing propane usage by 75kg/hr and saving Rs. 2.2 crore annually. The total project cost was Rs. 1.06 crore and the return on investment period is 10 months.
The document summarizes ClimateWell's solar-powered indoor climate solution. It describes ClimateWell's proprietary triple-phase absorption heat pump technology, which uses a salt-based energy storage system to provide continuous heating and cooling that is powered by solar energy or waste heat. The technology has been implemented in residential and commercial projects in Spain, providing free heating, cooling, and hot water while reducing CO2 emissions.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
To Improve Thermal Efficiency of 27mw Coal Fired Power PlantIJMER
Booming demand for electricity, especially in the developing countries, has raised power generation technologies in the headlines. At the same time the discussion about causes of global warming has focused on emissions originating from power generation and on CO2 reduction technologies such as:
(1) Alternative primary energy sources,
(2) Capture and storage of CO2,
(3) Increasing the efficiency of converting primary energy content into electricity.
In the dissertation, the thermal efficiency of the power plant is improved when Control of furnace draft (nearer to balanced draft). Oxygen level decreases percentage of flue gases. Above this level heat losses are increases & below this carbon mono-oxide is formed. Steam power plant is using fuel to generate electrical power. The used of the fuel must be efficient so the boiler can generate for the maximum electrical power. By the time the steam cycle in the boiler, it also had heat losses through some parts and it effect on the efficiency of the boiler. This project will analyze about the parts of losses and boiler efficiency. to find excess air which effect heat losses in boiler. By using the 27 MW coal fired thermal power plant of Birla Corporation Limited, Satna (M.P.) the data is collect by using types of Combustion & heat flow in boiler. Result of the analysis show that the efficiency of boiler depends on mass of coal burnt & type of combustion .This study is fulfilling the objective of analysis to find the boiler efficiency and heat losses in boiler for 27 MW thermal power plant of Birla Corporation Limited, Satna (M.P.)
Download Link (Copy URL):
https://sites.google.com/view/varunpratapsingh/teaching-engagements
Syllabus:
Availability and Irreversibility
Availability Function
Second Law Efficiencies
Work Potential Associated with Internal Energy
Waste Heat Recovery
Heat Losses – Quality vs. Quantity
Principle of Heat Recovery Units
Classification of WHRS on Temperature Range Bases
Commercial Viable Waste Heat Recovery Devices
Benefits of Waste Heat Recovery
Development of a Waste Heat Recovery System
Commercial Waste Heat Recovery Devices
West Heat Recovery Boiler (WHRB)
Recuperators- Regenerative, Ceramic, Regenerative Heat Exchanger
Thermal wheel/ Heat Wheel
Heat Pipe
Economiser
Feed Water
Heat Pump
Shell and Tube Heat Exchanger
Plate Heat Exchanger
Run-around coil
Direct Contact Heat Exchanger
Advantages and Limitations of WHRD’s
This document discusses vapor power cycles and combined power cycles. It covers the Carnot vapor cycle and how the Rankine cycle is better suited as a model for vapor power plants. Methods to increase the efficiency of the Rankine cycle are analyzed, including lowering the condenser pressure, superheating steam, increasing boiler pressure, using reheat cycles, and regenerative cycles. Combined cycles and cogeneration are also introduced.
Heat pumps transfer heat from one place to another using a refrigerant and an external energy source. They have four main components - an evaporator, condenser, expansion valve, and compressor. During heating, heat is absorbed from outdoor air and transferred indoors. During cooling, heat is absorbed indoors and released outside. Carbon dioxide is a natural, non-toxic refrigerant with no ozone depletion and low global warming potential. While less efficient than traditional refrigerants in simple cycles, CO2 systems can achieve higher efficiency through optimized design.
Heat pumps are devices that move thermal energy in the opposite direction of spontaneous heat flow by absorbing heat from a cold space and releasing it to a warmer one. There are two main types of heat pumps - vapor compression cycles which use a compressor to move heat and vapor absorption cycles which use a heat source like gas or steam instead of electricity to run the pump. Heat pumps have various applications like space heating and cooling, domestic hot water, industrial processes, and more. They are evaluated based on their coefficient of performance and energy efficiency. While efficient when temperatures are similar, noise from mechanical components and efficiency limits due to thermodynamics present issues.
This minute lecture introduces heat pumps as a best practices for heating and cooling buildings. According to UIE, more widescale use of heat pumps could save 1,200 million tonne of greenhouse gas emissions per year on a global scale, and represents one of the largest potential savings that any single technology can offer.
The document discusses heat pumps, including an overview of heat pump technologies used in Europe. It describes how heat pumps work by transferring heat energy and having a higher coefficient of performance than electric resistance heating. The document also discusses factors to consider for heat pump installation such as indoor air handling, refrigerant charge, outdoor unit placement, and controls. Maintenance recommendations include cleaning filters, coils, fans and inspecting ductwork. A case study examines using a heat pump versus a diesel boiler and air conditioner for a 550 square meter residential building.
Presentation on Heat pump and its Function.Monjur Ayon
The discussion are also include about heat pump with its different function,type of heat pump,working procedure,application of heat pump,main component of heat pump.
Air source heat pumps absorb heat from outside air, even at temperatures as low as -15°C, and use this heat to warm buildings. They work by extracting heat from the air into a fluid using an evaporator, compressing the heated fluid into a gas using a compressor, transferring the heat to radiators or underfloor heating via a condenser, then cooling and recycling the fluid. While more efficient than electric heating, air source heat pumps require electricity to run and their efficiency decreases in very cold temperatures.
Heat engines transform heat into work using two energy reservoirs at different temperatures. They include car, truck, jet, and rocket engines as well as steam engines and turbines. Heat engines have a maximum possible thermal efficiency known as the Carnot efficiency, which depends on the temperatures of the reservoirs. Refrigerators, which are heat engines run in reverse, also have a maximum coefficient of performance given by the Carnot coefficient of performance. The most efficient heat engines and refrigerators are Carnot engines, which operate through reversible cycles between the reservoirs. Common heat engine cycles include the Otto, Diesel, Brayton, and Stirling cycles. Steam turbines are widely used to generate electricity and use the Brayton cycle.
The document discusses cogeneration and waste heat recovery. Cogeneration, or combined heat and power (CHP), simultaneously generates electricity and useful heat. Trigeneration adds cooling to CHP. Cogeneration improves efficiency and reduces emissions and costs. Waste heat recovery units transfer heat from high-temperature processes to improve efficiency. Common applications of waste heat recovery include preheating, steam generation, and power generation. Cogeneration offers economic and environmental benefits over conventional power generation.
Heat engines for 10th standard new syllabusSwasthik Udupa
Introduction to heat engines .Working of 4 stroke engines, 2 stroke engines, petrol engines, diesel engines. Some advantages and disadvantages of these engines.
Cooling applications of solar system pptvikramdangi
This document provides an overview of solar cooling applications using absorption systems. It describes the basic components and processes of simple and practical vapour absorption systems using examples like ammonia-water. It discusses properties of ideal refrigerants, absorbents, and their combinations. Some advantages of absorption systems over compression systems are their lack of moving parts, ability to operate on thermal energy alone, suitability for large capacities, and controllability. Passive cooling techniques to reduce heat transfer and remove unwanted heat from buildings are also briefly covered.
Water Efficiency in Thermal power PlantAtanu Maity
This document summarizes cooling technology options for thermal power plants in India and their relative costs and impacts. It discusses that water is essential for thermal power generation but many existing plants face water shortages. Wet cooling systems like induced draft and natural draft cooling towers are most common, but dry cooling using air-cooled condensers is an option where water is extremely limited. Dry cooling systems have higher capital and operating costs and lower efficiency however. The document recommends wet cooling towers for most Indian plants to reduce water use while maintaining efficiency.
Thermal Efficiency of Buildings - Stefan Huber - Paul Heat Recovery ScotlandEuro Energy Services
At Euro Energy Services Renewable Energy in Scotland Open Day on October 23rd Stefan Huber talked about how the thermal efficiency of buildings and why well designed ventilation is vital to buildings.
At Euro Energy Services Renewable Energy in Scotland Open Day on October 23rd Thomas Dickson of Glow Worm discusses Air Source Heat Pumps and their application in dwellings across the UK
Feedwater Heater Control: Bring Your Efficiency to a New Level -- Kevin Hambrice, Global Factory Sales and Marketing Manager-Level, K-TEK, A Member of the ABB Group
Tata Lucknow implemented a waste heat recovery project to capture heat from the exhaust of 3 ovens - an ED oven, TC oven 1, and TC oven 2. Heat recovery units were installed on each oven and recover a total of 828,100 kcal/hr of heat. This recovered heat raises the temperature of water used in the PT coating line from 85C to 95C, reducing propane usage by 75kg/hr and saving Rs. 2.2 crore annually. The total project cost was Rs. 1.06 crore and the return on investment period is 10 months.
The document summarizes ClimateWell's solar-powered indoor climate solution. It describes ClimateWell's proprietary triple-phase absorption heat pump technology, which uses a salt-based energy storage system to provide continuous heating and cooling that is powered by solar energy or waste heat. The technology has been implemented in residential and commercial projects in Spain, providing free heating, cooling, and hot water while reducing CO2 emissions.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
To Improve Thermal Efficiency of 27mw Coal Fired Power PlantIJMER
Booming demand for electricity, especially in the developing countries, has raised power generation technologies in the headlines. At the same time the discussion about causes of global warming has focused on emissions originating from power generation and on CO2 reduction technologies such as:
(1) Alternative primary energy sources,
(2) Capture and storage of CO2,
(3) Increasing the efficiency of converting primary energy content into electricity.
In the dissertation, the thermal efficiency of the power plant is improved when Control of furnace draft (nearer to balanced draft). Oxygen level decreases percentage of flue gases. Above this level heat losses are increases & below this carbon mono-oxide is formed. Steam power plant is using fuel to generate electrical power. The used of the fuel must be efficient so the boiler can generate for the maximum electrical power. By the time the steam cycle in the boiler, it also had heat losses through some parts and it effect on the efficiency of the boiler. This project will analyze about the parts of losses and boiler efficiency. to find excess air which effect heat losses in boiler. By using the 27 MW coal fired thermal power plant of Birla Corporation Limited, Satna (M.P.) the data is collect by using types of Combustion & heat flow in boiler. Result of the analysis show that the efficiency of boiler depends on mass of coal burnt & type of combustion .This study is fulfilling the objective of analysis to find the boiler efficiency and heat losses in boiler for 27 MW thermal power plant of Birla Corporation Limited, Satna (M.P.)
Download Link (Copy URL):
https://sites.google.com/view/varunpratapsingh/teaching-engagements
Syllabus:
Availability and Irreversibility
Availability Function
Second Law Efficiencies
Work Potential Associated with Internal Energy
Waste Heat Recovery
Heat Losses – Quality vs. Quantity
Principle of Heat Recovery Units
Classification of WHRS on Temperature Range Bases
Commercial Viable Waste Heat Recovery Devices
Benefits of Waste Heat Recovery
Development of a Waste Heat Recovery System
Commercial Waste Heat Recovery Devices
West Heat Recovery Boiler (WHRB)
Recuperators- Regenerative, Ceramic, Regenerative Heat Exchanger
Thermal wheel/ Heat Wheel
Heat Pipe
Economiser
Feed Water
Heat Pump
Shell and Tube Heat Exchanger
Plate Heat Exchanger
Run-around coil
Direct Contact Heat Exchanger
Advantages and Limitations of WHRD’s
This document discusses vapor power cycles and combined power cycles. It covers the Carnot vapor cycle and how the Rankine cycle is better suited as a model for vapor power plants. Methods to increase the efficiency of the Rankine cycle are analyzed, including lowering the condenser pressure, superheating steam, increasing boiler pressure, using reheat cycles, and regenerative cycles. Combined cycles and cogeneration are also introduced.
Heat pumps transfer heat from one place to another using a refrigerant and an external energy source. They have four main components - an evaporator, condenser, expansion valve, and compressor. During heating, heat is absorbed from outdoor air and transferred indoors. During cooling, heat is absorbed indoors and released outside. Carbon dioxide is a natural, non-toxic refrigerant with no ozone depletion and low global warming potential. While less efficient than traditional refrigerants in simple cycles, CO2 systems can achieve higher efficiency through optimized design.
This document is a seminar report submitted by Rabindra Kumar Guin on the topic of thermal power plants. It provides an overview of the major equipment used in thermal power plants, including boilers, turbines, condensers, pumps, and more. It also explains the basic working principle of the Rankine cycle used in thermal power generation, where heat is converted to mechanical work and then electrical energy. The report discusses the advantages and disadvantages of thermal power plants and concludes by discussing opportunities to improve efficiency and reduce emissions from these important sources of electricity.
This document discusses water to water heat recovery concepts and applications. It begins with an overview of industry trends and topics to be covered, including the basics of heat pumps and various heat recovery arrangements. It then provides examples of heat pump applications for hospital and university preheating, hotel domestic hot water heating, and industrial process water heating. Overall economics are evaluated for different applications. Design considerations like temperature ranges, control schemes, and water quality are also addressed.
This document presents a summary of Pradeep Kumar's presentation on absorption refrigeration systems. The presentation covered the principle of operation, working fluids, experimental results using different fluids, and various designs of absorption refrigeration systems. It discussed how absorption systems use natural refrigerants like ammonia and water, have lower electricity usage than vapor compression systems, but also have lower COP. The presentation analyzed different absorption system designs including single effect, double effect, dual cycle, ejector systems, and combined cycle systems to improve performance. It provided diagrams to illustrate the various designs and discussed experimental results showing potential COP improvements over single effect systems.
Monitored energy use of air to water heat pumps in single Passivhaus dwellings is compared with the design estimates using PHPP. Heat pumps using conventional HFC refrigerants are compared with CO2 refrigerant. The latter gave improved performance for hot water heating but significantly worse for space heating. This is due to the very low heat load of Passivhaus dwellings being below the normal output range of available heat pumps.
1. The document describes the basic components and working of a simple vapor absorption refrigeration system (VARS). It explains the working of the absorber, generator, condenser, expansion device and evaporator.
2. It then discusses the concept of circulation ratio and provides the steady flow analysis and governing equations for a VARS using the water-lithium bromide pair.
3. It also gives the key equations to calculate the COP, heat input/output of the various components, and provides a sample problem to calculate the COP and total heat rejection of a given VARS system.
This document provides a summary of Abhishek Chaudhary's summer internship at the Super Thermal Power Plant in Barh, Bihar, India. It discusses the typical components and processes involved in a coal-fired thermal power plant, including how chemical energy from coal is converted to electrical energy through boiling water to create steam that spins turbines connected to generators. It also describes the specific components of the Barh power plant, including its coal requirements, water source, capacity, and beneficiaries. The document outlines the typical Rankine cycle used in thermal power plants and discusses the functions of key components like the boiler, superheater, reheater, fuel preparation systems, stacks, air deheaters, fans, conden
EDI SY SEM 2 - Mid Sem Review ppt.pptxKhaireSushom
1) The document describes a laboratory experiment to showcase a Hampson–Linde dual pressure liquefaction system to liquefy methane gas.
2) Key objectives are to increase the liquefaction cycle energy efficiency, reduce energy requirement for gas compression, and maximize liquefied gas yield.
3) A simulation model of the dual pressure system is created involving compressors, heat exchangers, expanders, and separators. The simulation output indicates the system can liquefy around 10% of the input methane at optimal conditions.
This document discusses waste heat recovery through the use of a reverse refrigeration cycle or organic Rankine cycle (ORC). It begins by outlining the problem of inefficient production processes that lose a significant amount of heat. The document then provides an overview of how a reverse refrigeration cycle works using a lower boiling point fluid to convert low-temperature waste heat into electricity. It discusses some key components of the cycle like the evaporator, turbine, condenser and pump. The document outlines the methodology that will be used to analyze implementing a reverse refrigeration cycle for waste heat recovery, including specifying the problem, evaluating heat sources, selecting a working fluid, calculating the ideal cycle, sizing heat exchangers, and calculating the real cycle
The document provides information on supercritical Rankine cycles and supercritical boilers. Some key points:
1) A supercritical Rankine cycle operates above the critical point of the working fluid, where it behaves as a supercritical fluid with properties between a liquid and gas. This improves efficiency over subcritical cycles.
2) Supercritical boilers operate at pressures above 221.2 bar and temperatures above 374°C for water. Special high-temperature alloys are needed to withstand these conditions.
3) Boiler design considerations include symmetric shapes for uniform temperatures, downfired burners, and optimized dimensions. Materials like Inconel 740 are commonly used in supercritical boiler components.
Thermal power plant Khedr, Hisar, HaryanaEesha Gupta
The document provides information about the Rajiv Gandhi Thermal Power Plant (RGTPP) in Khedar, India. It discusses that RGTPP has two units that generate 600 MW each for a total output of 1200 MW per day. It then describes the basic processes that occur in a coal-based thermal power plant, including how coal is converted to steam to drive turbines and generate electricity. The document outlines the major components of RGTPP, including the coal handling system, boiler, turbines, generators, cooling system and instrumentation.
vapor absorption system,three fluid vapor absorption system,water and ammonia vapor absorption system water and lithium bromide vapor absorption system
Experimental Investigation of a Household Refrigerator Using Evaporative-Cool...inventy
The objective of this paper was to investigate experimentally the effect of Evaporative-cooled condenser in a household refrigerator. The experiment was done using HCF134a as the refrigerant. The performance of the household refrigerator with air-cooled and Evaporative-cooled condenser was compared for different load conditions. The results indicate that the refrigerator performance had improved when evaporative-cooled condenser was used instead of air-cooled condenser on all load conditions. Evaporativecooled condenser reduced the energy consumption when compared with the air-cooled condenser. There was also an enhancement in coefficient of performance (COP) when evaporative-cooled condenser was used instead of air-cooled condenser. The Evaporative cooled heat exchanger was designed and the system was modified by retrofitting it, instead of the conventional air-cooled condenser by making drop wise condensation using water and forced circulation over the condenser. From the experimental analysis it is observed that the COP of evaporative cooled system increased by 13.44% compared to that of air cooled system. So the overall efficiency and refrigerating effect is increased. In minimum constructional, maintenance and running cost, the system is much useful for domestic purpose. This study also revealed that combining a evaporative cooled system along with conventional water cooled system under the condition that the defrost water obtained from the freezer is used for drop wise condensation over condenser and water cooled condensation of the condenser at the bottom using remaining defrost water would reduce the power consumption, work done and hence further increase in refrigerating effect of the system. The study has shown that such a system is technically feasible and economically viable
Kota super thermal power plant,kstps ppt,RTUManohar Nagar
Rajasthan's first major coal-fired power plant, the KSTPS, was established in 1983 near Kota with a total installed capacity of 1240 MW across 7 units ranging from 110-210 MW each. Located on the left bank of the Chambal River, the KSTPS uses a steam turbine generator process utilizing a Rankine cycle to convert the heat from burning coal into electrical energy.
This Presentation mainly focuses on Thermal Energy Generation in Sri Lanka and Energy conservation techniques which are using for effective and efficient thermal energy generation.
In any thermal power generation plant, heat energy converts into mechanical work. Then it is converted to electrical energy by rotating a generator which produces electrical energy.
Cogenration plant, where generated steam is utilized to generate power as wel...SujeetSalunkhe
The document discusses energy efficiency in steam systems. It describes the Rankine cycle used in steam power plants and covers topics like cogeneration, components of steam systems, and ways to improve efficiency. Cogeneration systems produce both electrical and thermal energy from fuel. Proper maintenance and optimization of boilers, turbines, distribution systems and steam traps can reduce energy losses and lower costs.
Thermal Power Plant - Full Detail About Plant and Parts (Also Contain Animate...Shubham Thakur
A thermal power station is a power plant in which the prime mover is steam driven. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. After it passes through the turbine, the steam is condensed in a condenser and recycled to where it was heated; this is known as a Rankine cycle. The greatest variation in the design of thermal power stations is due to the different fossil fuel resources generally used to heat the water. Some prefer to use the term energy center because such facilities convert forms of heat energy into electrical energy.[1] Certain thermal power plants also are designed to produce heat energy for industrial purposes of district heating, or desalination of water, in addition to generating electrical power. Globally, fossil fueled thermal power plants produce a large part of man-made CO2 emissions to the atmosphere, and efforts to reduce these are varied and widespread.
For Video on Themal Power Plant (Animated Working Video) :- https://www.youtube.com/watch?v=ouWOhk1INjo
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Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
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Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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How to Make a Field Mandatory in Odoo 17Celine George
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
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The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
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Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
20. Longfield Academy case study
New-build high school combines ground source heat pumps and solar thermal technology for renewable heating and
cooling
The project
The construction of a new academy building for 1,150 students combines ground source heat
pumps, with solar thermal technology to maximise renewable energy efficiency.
The solution
ENER-G has installed 35 boreholes and completed work on the plant room, to accommodate four
ground source heat pumps with a combined capacity of 200kW. A total of 22 solar thermal panels
have been installed, covering 44 square metres of the Academy’s flat roof.
The benefits
•It is expected to achieve a minimum ‘Very Good’ rating under BREEAM for schools, as a result of
using renewable power sources, and extensive use of insulation to secure a thermal performance
15% beyond current standards.
•The installed renewable technologies will supply heating and hot water to the academy, together
with passive under-floor cooling in the summer months. This is projected to reduce the Academy’s
carbon dioxide emissions from its heating system by up to 40%.
21.
22. Malvern Community Hospital case study
New hospital combines ground source heat pumps and a combined heat and power system to generate its own green
power.
The project
The new-build Malvern Community Hospital opened in autumn 2010 and provides both
in-patient and out-patient services. ENER-G delivered a solution that was considered the most
efficient means of meeting the building’s heating demands combining two low carbon
technologies – a ground source heat pump system and a combined heat and power (CHP) unit.
This is the first time that these technologies have been used in combination in the UK’s healthcare
sector.
The solution
The ground source system comprises 25 boreholes and two heat pumps with combined capacities
of 125kW for both heating and cooling. The ENER-G CHP system is a reciprocating gas engine
rated at 33kW of electrical output generating 55kW of useful thermal output for the building and
the ground loop for the heat pump.
The benefits
• The hospital has achieved BREEAM rating ‘Excellent’ and is projected to save on its energy bills
and reduce its carbon emissions by 15 tonnes per annum.
• A low maintenance option, with the ground source system having a lifetime in excess of 50
years, and the heat pumps lasting up to 25 years.
• With the presence of a CHP system at the same site the electricity generated by the CHP unit
can be utilised to power the heat pump
23.
24. Summary
Feasibility
Project Management
In-house drilling rigs & teams
In-house heat pump install team
Single point responsibility
31. Principle of gas absorption
heat pump
Expansion valve
Low temperature
gas
Hot gas
Heat pump
USEFUL
EFFECT
Heating return
Very cold Cold liquid
liquid Expansion valve
32. How does a GAHP work?
1. Gas burner heats ammonia and water
solution.
2. Ammonia gas enters condenser,
condenses and releases heat.
3. High pressure ammonia liquid converted
into low pressure ammonia liquid.
4. Ammonia liquid evaporates and draws in
heat.
5. Ammonia gas absorbs into ammonia
water solution.
6. Solution pump powers process.
33. How does a GAHP work?
1. Generator
Within the generator, the
low Nox gas-fired burner
heats the ammonia/water Expansion valve
solution via a heat
exchanger, increasing the 6
temperature and pressure.
1
The strong ammonia
vapour travels to the
condenser (2) whilst the Low temperature 5
weak ammonia solution is
circulated to the Absorber
gas 7
(5) Hot gas
Heat pump
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
34. How does a GAHP work?
2. Condenser
The high temperature,
high pressure ammonia
vapour releases its heat Expansion valve
into the heating system
in the condenser. The 6
vapour becomes a liquid
1
and travels to the
expansion valve (3) on
its way to the Low temperature 5
evaporator (4)
gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
35. How does a GAHP work?
3. Expansion valve
The high pressure
ammonia passes
through the expansion
valve where the Expansion valve
pressure falls. The 6
ammonia now has a
reduced boiling point 1
and the liquid changes
back to a vapour. This
vapour passes on to Low temperature 5
the Evaporator (4) gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
36. How does a GAHP work?
4. Evaporator
A fan draws ambient air
through the evaporator.
The ambient air captured Expansion valve
by the ammonia vapour,
contains a high amount of 6
free, renewable energy.
1
The now heated, low
pressure vapour passes on
to the Absorber (5) Low temperature 5
gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
37. How does a GAHP work?
5. Absorber
In the absorber the weak
ammonia solution
recombines with the heated Expansion valve
vapour, changing its state
6
into a liquid. This releases
further heat to the heating 1
system. The now
recombined ammonia
solution is pumped (7) back Low temperature 5
to the generator. gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
38. How does a GAHP work?
6. Second expansion valve
This second valve controls the
flow of weak ammonia
between the Generator (1) and
Expansion valve
the Absorber (5) 6
1
Low temperature 5
gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
39. How does a GAHP work?
7. Heat pump
The pump moves the ammonia Expansion valve
solution from the Absorber (5)
back to the Generator (1) where 6
the process starts again.
1
Low temperature 5
gas 7
Heat pump Hot gas
4 2
Heating return
Very cold Cold liquid
liquid Expansion valve
3
40. The Technology
• Water-ammonia sealed circuit : no
top-up, no drain, extremely simple
maintenance;
• Natural refrigerant : no CFC, HCFC,
HFC;
• One single moving component
(solution pump) : very high reliability;
• Exhaust flue gas water vapour
condensation: reduced energy losses
in the exhaust gas;
• Very low electrical consumption
1/10 of an equivalent electrical heat
pump.
41. Gas Absorption Heat Pumps
Absorption Technology
Different types of GAHP
Benefits
Integration
42. GAHP GS: Ground source
applications
• Nominal efficiency 170% by means of heat recovery from renewable source (ground)
• LT or HT versions (55 °C / 65 °C)
• Domestic Hot Water production up to 70°C
• Indoor installation
• Reduction in borehole quantity by up to 60%
• Cheaper civils costs against electric ground source
44. The Open University
The UK’s largest closed-loop ground source, gas absorption heat pump project,
providing low carbon heat and reducing energy consumption by up to 50%
The project
Building 12 is a 2,000m2 new-build development that forms part of the Walton Hall
Campus. The new building is targeting a BREEAM ‘Outstanding’ rating. It incorporates
natural ventilation, night time cooling, solar chimneys, automatic lighting controls, a green
roof, solar water heating and photovoltaic panels.
The solution
ENER-G drilled 13 boreholes to a depth of more than 100 metres to install a ground loop
system that feeds four gas absorption heat pumps, with a combined capacity of 140kW heat
output. This system supplies the building’s heating requirements and will achieve carbon
dioxide savings of approximately 45%, in comparison to a system heater via a condensing
boiler
The benefits
•Energy consumption reductions of up to 50%
•Exemption from the climate change levy
•Cost savings relating to the Carbon Reduction Commitment (CRC) energy efficiency scheme
and improved Building Energy Certificate ratings (EPC and DEC)
•Reduced regulatory costs as a result of low emissions, enabling points for BREEAM
assessment and compliance with Part L2A and Part L2B of the building regulations
45. GAHP A: Air source
applications
•Nominal efficiency 165% by means of heat recovery from renewable source (air)
• LT or HT versions (55 °C / 65 °C)
• Domestic Hot Water production up to 70°C
• Outdoor installation to free up plant room space
• Minimal drop off of output and efficiency in low ambient temperatures against electric heat pumps
47. GAHP AR: Alternate heating
and cooling
• Heating or cooling from the same unit
• 2-1 ratio of heating to cooling
• Efficiency in excess of 144%
• Outdoor installation to free up plant room
space
48. GAHP ACF & WS: Simultaneous
production of hot/cold water
• Heating to cooling ratio 2.5 to 1
• Efficiency in excess of 227%
• Indoor installation
• Very low electrical consumption
49. Gas Absorption Heat Pumps
Absorption Technology
Different types of GAHP
Benefits
Integration
50. Direct use of energy CO₂
savings
h
t
t
p
:
/
/
w
w
w
51. Direct use of energy CO₂
savings
• Gas produces 0.1836 kgCO₂ / kWh
• Electricity from the grid produces 0.5246 kgCO₂ /kWh
http://www.carbontrust.com/media/18223/ctl153_conversion_factors.pdf*
52. Direct use of energy CO₂
savings
• Utilized electricity from the grid produces 3* times the CO₂ of
natural gas
• Electric HP Seasonal COP 2.25**
• GAHP Seasonal GUE 1.4
Therefore a gas absorption heat pump produces 46 % less
CO₂/kWh than a air source heat pump.
• If we use an example of 60 hours per week 6 months of the
year…..
http://www.carbontrust.com/media/18223/ctl153_conversion_factors.pdf*
**http://www.energysavingtrust.org.uk/Media/node_1422/Getting-warmer-a-field-trial-of-heat-pumps-PDF
53. Direct use of energy CO₂
savings
Example: GAHP-A Air Source Heat Pump (36.2kW)
(Running 60 hours per week / 6 months per year)
Robur Gas Heat Pump
= 1560 (hrs) x 25.7 (kW gas) x 0.1836 (kgCO2/kWh gas)
= 7.3 Tonnes of CO2 per year
Electric Air Source Heat Pump (seasonal COP of 2.25)
= 1560 (hrs) x 16 (kW electricity) x 0.5246 (kgCO2/kWh elec)
= 13 Tonnes of CO2 per year
To put that into perspective……..
54. 1 year’s CO₂ difference would fill the Olympic swimming pool at the
2012 games 12 times!
55. Also take into account…
No use/leakage of F-Gases
A typical 37kW air to air electric heat pump contains about 14kg of R410a gas.
If the leakage from the system is for example 10% of the charge per year
*(estimates put the Global Annual leakage rates of refrigerants at 27.8% !!)
This is equivalent to 2.5 Tonnes of CO2 per year
Another 5 swimming pools worth!
* Institute of refrigeration report 2008 (New high pressure Low GWP refrigerant blends)
56. Annual running costs
Example : GAHP-A Air Source Heat Pump (36.2kW)
(Running 60 hours per week / 6 months per year)
Robur Gas Heat Pump Condensing Boiler Electric Air Source
(seasonal efficiency of (seasonal efficiency of Heat Pump (seasonal
140%) 90%) COP of 2.25)
= [1560(hrs) x 0.75(LF) x = [1560(hrs) x 0.75(LF) x = [1560(hrs) x 0.75(LF) x
36.2(kW) x 3.1(p/kWh)] / 36.2(kW) x 3.1(p/kWh)] / 36.2(kW) x 11.46(p/kWh)] /
1.40 0.90 2.25
= £ 938 per year = £ 1,459 per year = £ 2,157 per year
Saving £500 over a condensing boiler or £1200 over an Electric Heat
Pump
Note: gas and electricity prices from SAP 2009
http://www.bre.co.uk/filelibrary/SAP/2009/SAP-2009_9-90.pdf
57. Annual running costs
There are significant running cost
savings to be achieved by using a
Gas Absorption Heat Pump.
58. GSHP GAHP Covering Base Load
Covering Base Load
140
130
120
Heating Load [kW]
110
100
90
Boiler
80
70
60
50
Boiler
40
30
20 GAHP
10
0
October November December January Febtuary March April
Month
59. Gas Absorption Heat Pumps
Absorption Technology
Different types of GAHP
Benefits
Integration
Good Morning/Afternoon, thankyou for inviting me here to give this CIBSE approved CPD presentation on Gas absorption Heat pumps. Before we start to enable me to generate certificates for you all please can you fill in your name and job title on this sheet which I will use to generate the certificates. Ok, As you can see my name is Mark and I work for ENER-G
Navigation Bar – In Corporate Presentation Only – Links to separate solution presentations
Explain COP
Advertising and PR – all about brand awareness First time the business has done any advertising in industry publications PR: Riskmanager, promoting Quick guides, renewal reminder services, wider energy management offer – CMR and solutions services.
GSHP & CHP Combined
Advertising and PR – all about brand awareness First time the business has done any advertising in industry publications PR: Riskmanager, promoting Quick guides, renewal reminder services, wider energy management offer – CMR and solutions services.
GSHP & CHP Combined
Good Morning/Afternoon, thankyou for inviting me here to give this CIBSE approved CPD presentation on Gas absorption Heat pumps. Before we start to enable me to generate certificates for you all please can you fill in your name and job title on this sheet which I will use to generate the certificates. Ok, As you can see my name is Mark and I work for ENER-G
This CPD presentation will take us through the history of Gas Absorption heat pumps leading to the technology behind gas absorption heat pumps and the ABSORPTION cycle to the different types and thier use. Then onto the benefits of using the technology with some comparisons with electric air source heat pumps as regards running costs and CO2 emissions and onto integration with other heat sources.
Of the four technologies being promoted as holding the key to the future of environmentally sustainable buildings - Solar, Biomass, Combined Heat and Power and Heat Pumps - it is the Heat Pump that has been around the longest. Following the successful application of absorption technology to domestic refrigeration in the 1950s and 60s, when over 4 million units were sold, the first commercial gas-fired chiller was produced in the USA by the Arkansas & Louisiana Gas Company (Arkla) in 1968. Between 1968 and 1991, over 300,000 of these chillers were sold. The modern era for gas heat pumps began in earnest in 1991, when the highly respected Italian heating equipment manufacturer Robur acquired the gas chiller business of US manufacturer Electrolux. After moving production to Europe, the process of continuous product development and improvement eventually led in 2004 to the commercial launch of the first gas absorption heat pump.
To explain the differences in the technology we must first look at an electric heat pump cycle. Conventional heat pump technology uses electrical power to drive a compressor powered thermodynamic cycle. The thermodynamic cycle is a closed system comprising of two heat exchangers, one outside of the building to recover heat from the outside air and a second inside the building to heat either inside air or water for circulating around the building. The two heat exchangers are piped together and heat is moved via a working fluid which is pumped (in gaseous form) between the two heat exchangers by the compressor. The working fluid flow is regulated by an expansion device. Typically, for every kW of electricity used to power the heat pump 2 to 3kW of heat are produced. This ratio is called the Coefficient of Performance (COP) and a COP of 2 to 3 is not uncommon for an electric heat pump.
The technology in a GAHP contains significant advantages over electric heat pumps. The sealed circuit should never need to be touched. The use of a natural ammonia/water mixture as the working fluid instead of the HFC refrigerant working fluids used by electric heat pumps gives the gas absorption option another plus in the battle against global warming and acts a useful counter to the Fgas Regulations (Regulation EC 842/2006). As well has having an ozone depletion potential (ODP) of zero, Ammonia has a global warming potential (GWP) of zero with an atmospheric life cycle of less than a week compared with the current generation of HFCs with GWPs of over 2,000 and atmospheric life cycles of 30 years or more. Even the smallest HFC leak from an electric heat pump can undo a large part of the environmental benefits achieved through the operating efficiencies. In contrast, the factory sealed system of the gas heat pump means that the opportunities for refrigerant leakage are much less than those of a conventional electric heat pump and, despite that, should the gas heat pump suffer a catastrophic leak, there will be no detrimental effect to the environment.
This CPD presentation will take us through the history of Gas Absorption heat pumps leading to the technology behind gas absorption heat pumps and the ABSORPTION cycle to the different types and thier use. Then onto the benefits of using the technology with some comparisons with electric air source heat pumps as regards running costs and CO2 emissions and onto integration with other heat sources.
The technology can be used in ground source and because of the basic COP ( which I will come onto later) they require upto 60% less bore holes which obviously greatly reduces civils costs.
Advertising and PR – all about brand awareness First time the business has done any advertising in industry publications PR: Riskmanager, promoting Quick guides, renewal reminder services, wider energy management offer – CMR and solutions services.
The standard air source versions are heating only. Air source versions of GAHP’s are designed outdoor instalation which reduces plantroom/ wall space required.
As you can see there is minimal drop off in output and efficiency when the temperature is colder outside
You can also have an alternate heating and cooling version of the gas heat pump. This isn’t quite as efficient in cooling mode as it is in heating.
Where you require heating and cooling simultaneously you can get considerable added value out of a GAHP as the cooling is effectively free.
This CPD presentation will take us through the history of Gas Absorption heat pumps leading to the technology behind gas absorption heat pumps and the ABSORPTION cycle to the different types and thier use. Then onto the benefits of using the technology with some comparisons with electric air source heat pumps as regards running costs and CO2 emissions and onto integration with other heat sources.
So a saving over 1 year in CO2 of 6.5 tonnes
The 3 comes from a the SAP 2009 report. Table 12 The 2.25 COP comes from an independent field trial report done by The Energy Saving Trust in September 2010. I have put the web address below.
The 3 comes from a the SAP 2009 report. Table 12 The 2.25 COP comes from an independent field trial report done by The Energy Saving Trust in September 2010. I have put the web address below.
So a saving over 1 year in CO2 of 5.7 tonnes
1 tonne of CO2 is 556.2m3 Olympic swimming pool 50m*25m*2m = 250m3 556.2 * 6.5 + 3615.30 / 250 = 14.46 Would Rebecca Adlington swim through that to get another gold medal?
Estimates attribute 13% of ALL of the world’s Global Warming to refrigerants in the atmosphere. The F-Gas refrigerant used in conventional electric air conditioners and heat pumps is an extremely strong greenhouse gas. For example R410a has a Global Warming Potential (GWP) of 1725 times that of CO2. The Robur heat pump uses the environmentally benign water/ammonia mixture that has an ozone depletion potential (ODP) of zero and a global warming potential (GWP) of zero with an atmospheric life cycle of less than a week. In addition the sealed working fluid circuit means the opportunity for refrigerant leakage is much less than with a conventional heat pump system. 2.6 tonnes = 1446.12 m3 / 250 = 5.78
On to costs of running against a conventional boiler or an electric heat pump. Using a Gas Absorption Heat Pump in this scenario would have saved you approximately £700 against a condensing boiler and £1200 against an electric heat pump. Who would have thought that an electric air source heat pump using utilising renewable energy would cost more to run than a gas boiler!!!
As you can see running the heat pump for as much time as possible gives the best cost savings and the best CO2 savings.
To maximise usage of renewable energy with a gas absorption heat pump endeavour to size so that the base load is covered by the heat pumps so you get maximum run hours out of the units and therefore maximum cost and CO2 savings. In this example the building load is 110kW @ -4 degrees so the heat pump will cover the base load from April through to October and then gas condensing boilers will take up the reminder of the load for the coldest 4 months of the year.
This CPD presentation will take us through the history of Gas Absorption heat pumps leading to the technology behind gas absorption heat pumps and the ABSORPTION cycle to the different types and thier use. Then onto the benefits of using the technology with some comparisons with electric air source heat pumps as regards running costs and CO2 emissions and onto integration with other heat sources.
Due to higher flow temperatures you get from a GAHP they are more versatile and can fully integrate with condensing boilers, you can even get matched boilers to sit on the same skid for outdoor installation. Also because of being able to run at these temperatures then you can use them for DHW as these temperatures will stop legionella formation. With these higher flow temps they can also be used in retrofit situations, in most cases without having to alter the pipe work or heat sources on the secondary side. To maximise renewables they are also suited to combine with solar panels to give DHW year round.