Energy Night 2016 Release Print
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The document discusses the limitations of current auxiliary power units (APUs) used in trucks, which are typically small diesel engines. It introduces an alternative prototype APU system that uses a Stirling engine and adsorption refrigeration. This novel system has been built and tested, showing potential benefits over conventional diesel APUs by being quieter, cleaner, and more fuel efficient. The system is still being modeled and optimized to validate the design.
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Release Draft Low Res
Heavy trucks currently idle their diesel engines or use auxiliary power units to provide electricity and air conditioning for drivers while sleeping, which is inefficient and polluting. A hybrid Stirling engine and adsorption cooling technology could provide a more efficient and lower emissions alternative for next generation auxiliary power units. This system would utilize waste heat from the Stirling engine to power an adsorption refrigeration cycle, providing quiet operation without expensive emissions controls. Research is ongoing to develop and test such a system.
A Brief Study on Introduction to HCCI Engine- Hybrid Engine
This is brief study of HCCI engine done for subject of Pwer Engineering in Alternate Engine Options.
Hope you like this.
Do let me know
deshadi805@gmail.com
Combustion Reaction(:
The document discusses combustion reactions and provides examples. Combustion or burning is the exothermic reaction between a fuel and oxidant that produces heat. It requires oxygen, heat, and a fuel as represented by the fire triangle. Examples provided include a stove cooktop which needs these three elements for combustion, and combustion engines which power vehicles by combusting fuel with air to produce motion. NASCAR engines are designed to maximize air intake and combustion for high power output at speed. Nitrous oxide can also be injected to increase combustion in engines. The document concludes with an example of a NASCAR driver being penalized for using an oversized engine not within regulations.
FYP presentation
This document outlines Aleksandra Monika Zarzycka's final year project on the Stirling engine. The project involved analyzing the thermodynamic cycle of the Stirling engine, redesigning the engine with 3D modeling and manufacturing drawings, and building and testing a prototype. The goals were to increase mechanical efficiency, adapt the design for university manufacturing, simplify the mechanism, and incorporate a generator. Various design changes were made and tests conducted, including an air leak test, lubricant testing, piston testing, and a final performance test. The conclusions analyzed the thermodynamic cycle and mechanical tests on the working prototype.
Homogeneous Charged Compression Ignition Engine (HCCI Engine)
This is my final year seminar presentation on HCCI Engine presented by me at SKIT, Jaipur.
This presentation contains a basic introduction of HCCI Engine.
Some of the contents are copied from various websites so some details are subjected to copyright law.
I am using these information only for the educational purpose
Poster Release Final 2
1) Researchers at NUI Galway are developing a next-generation auxiliary power unit (APU) for heavy trucks using a free-piston Stirling engine coupled to a waste-heat driven adsorption chiller.
2) Preliminary modeling results indicate the proposed system could offer significant benefits over conventional diesel and combustion-engine based APUs by being virtually silent, maintenance-free, and producing zero emissions without aftertreatment.
3) Researchers have built a prototype of the Stirling-adsorption system and are currently testing it at NUI Galway to benchmark it against a leading conventional APU and further validate system models.
Options for optimizing combined cycle plants
This document discusses several options for optimizing the efficiency of combined cycle power plants, including:
1. Improving compressor cleanliness by using HEPA filters, which can increase power output by 6% and extend time between cleanings.
2. Making operational adjustments such as optimizing low load setpoints and reducing heat loss.
3. Installing aftermarket systems like ECOMAX automated combustion tuning to improve heat rate by 0.2-0.25% and boost output up to 11 MW.
4. A technology called TurboPHASE that uses a reciprocating engine to add compressed air to combustion turbines, allowing 10-20% faster response time and up to 7% improved heat rate.
78201906
This document summarizes a study on an adsorption refrigeration system for truck cabin cooling using engine exhaust heat. The proposed system uses two adsorbers, two condensers and an evaporator connected with two control valves. Experimental testing of a 1 kW prototype showed a cooling capacity of 1-1.2 kW and a COP of 0.4-0.45. The system uses a compact design with minimal components, making it portable for truck integration. Graphs show the system's refrigeration capacity, COP and heating time vary with exhaust gas temperature. The study concludes the proposed system can provide refrigeration without impacting engine efficiency and is a viable option for truck cabin cooling.
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Release Draft Low Res
Heavy trucks currently idle their diesel engines or use auxiliary power units to provide electricity and air conditioning for drivers while sleeping, which is inefficient and polluting. A hybrid Stirling engine and adsorption cooling technology could provide a more efficient and lower emissions alternative for next generation auxiliary power units. This system would utilize waste heat from the Stirling engine to power an adsorption refrigeration cycle, providing quiet operation without expensive emissions controls. Research is ongoing to develop and test such a system.
A Brief Study on Introduction to HCCI Engine- Hybrid Engine
This is brief study of HCCI engine done for subject of Pwer Engineering in Alternate Engine Options.
Hope you like this.
Do let me know
deshadi805@gmail.com
Combustion Reaction(:
The document discusses combustion reactions and provides examples. Combustion or burning is the exothermic reaction between a fuel and oxidant that produces heat. It requires oxygen, heat, and a fuel as represented by the fire triangle. Examples provided include a stove cooktop which needs these three elements for combustion, and combustion engines which power vehicles by combusting fuel with air to produce motion. NASCAR engines are designed to maximize air intake and combustion for high power output at speed. Nitrous oxide can also be injected to increase combustion in engines. The document concludes with an example of a NASCAR driver being penalized for using an oversized engine not within regulations.
FYP presentation
This document outlines Aleksandra Monika Zarzycka's final year project on the Stirling engine. The project involved analyzing the thermodynamic cycle of the Stirling engine, redesigning the engine with 3D modeling and manufacturing drawings, and building and testing a prototype. The goals were to increase mechanical efficiency, adapt the design for university manufacturing, simplify the mechanism, and incorporate a generator. Various design changes were made and tests conducted, including an air leak test, lubricant testing, piston testing, and a final performance test. The conclusions analyzed the thermodynamic cycle and mechanical tests on the working prototype.
Homogeneous Charged Compression Ignition Engine (HCCI Engine)
This is my final year seminar presentation on HCCI Engine presented by me at SKIT, Jaipur.
This presentation contains a basic introduction of HCCI Engine.
Some of the contents are copied from various websites so some details are subjected to copyright law.
I am using these information only for the educational purpose
Poster Release Final 2
1) Researchers at NUI Galway are developing a next-generation auxiliary power unit (APU) for heavy trucks using a free-piston Stirling engine coupled to a waste-heat driven adsorption chiller.
2) Preliminary modeling results indicate the proposed system could offer significant benefits over conventional diesel and combustion-engine based APUs by being virtually silent, maintenance-free, and producing zero emissions without aftertreatment.
3) Researchers have built a prototype of the Stirling-adsorption system and are currently testing it at NUI Galway to benchmark it against a leading conventional APU and further validate system models.
Options for optimizing combined cycle plants
This document discusses several options for optimizing the efficiency of combined cycle power plants, including:
1. Improving compressor cleanliness by using HEPA filters, which can increase power output by 6% and extend time between cleanings.
2. Making operational adjustments such as optimizing low load setpoints and reducing heat loss.
3. Installing aftermarket systems like ECOMAX automated combustion tuning to improve heat rate by 0.2-0.25% and boost output up to 11 MW.
4. A technology called TurboPHASE that uses a reciprocating engine to add compressed air to combustion turbines, allowing 10-20% faster response time and up to 7% improved heat rate.
78201906
This document summarizes a study on an adsorption refrigeration system for truck cabin cooling using engine exhaust heat. The proposed system uses two adsorbers, two condensers and an evaporator connected with two control valves. Experimental testing of a 1 kW prototype showed a cooling capacity of 1-1.2 kW and a COP of 0.4-0.45. The system uses a compact design with minimal components, making it portable for truck integration. Graphs show the system's refrigeration capacity, COP and heating time vary with exhaust gas temperature. The study concludes the proposed system can provide refrigeration without impacting engine efficiency and is a viable option for truck cabin cooling.
Cryo
This document proposes a zero emission vehicle that uses liquid nitrogen (LN2) as a cryogenic fuel in an open Rankine cycle. LN2 offers advantages over current battery technologies in terms of performance and cost. The vehicle would utilize ambient heat to vaporize the LN2, which would then expand in an engine to produce power. Estimates indicate the LN2 system could provide a range of nearly 400 km using 400 liters of LN2 stored onboard. Key components would include an LN2 expander engine, efficient heat exchanger, and insulated cryogenic storage tank. The LN2 vehicle is estimated to have lower operating costs than electric vehicles currently in development.
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES or (FROST FREE HEAT EXCHANGER FOR CRYOGENIC AUTOMOTIVE PROPULSION)
GLOBAL CEMENT ARTICLE
1) Around 47% of the thermal energy used in cement production is wasted, with 35% of that waste heat recoverable to generate up to 30% of a plant's electricity needs.
2) Waste heat recovery reduces operating costs and increases profits, but has not been widely implemented except in China where most installations use steam turbines.
3) New organic Rankine cycle technology provides an alternative to steam turbines for cement plant waste heat recovery, offering efficiencies at lower temperatures without complex vacuum systems.
ADEDAMOLA ONABANJI
This document summarizes the development of an adsorption cooling system with a thermal energy storage-based evaporator for air conditioning applications. Key points include:
- The system uses zeolite 13X/CaCl2 composite adsorbent to adsorb and desorb water as the refrigerant.
- It incorporates a latent thermal energy storage system using pentadecane to reduce temperature fluctuations in the chilled water output.
- Experimental testing showed improvements over previous designs, including higher specific cooling power, lower weight, better coefficient of performance, and more stable chilled water temperatures.
- Further recommendations to optimize the system include integrating solar heating and adding nano-particles to the phase change material for improved
IRJET- A Review Paper on Air-Conditioner Works on Exhaust Gas
This document reviews a proposed air conditioning system for automobiles that uses an absorption refrigeration cycle powered by waste heat from the vehicle's exhaust gases, rather than the conventional vapor compression cycle driven by the engine. It begins with an introduction comparing vapor absorption and compression cycles. Then it discusses the proposed system using ammonia as the refrigerant and exhaust heat as the energy source. The remainder of the document reviews relevant literature on vapor absorption automobile air conditioning systems that also aim to make use of waste exhaust heat rather than engine power. It discusses several studies that analyzed systems using lithium bromide-water and ammonia-water working pairs to power absorption refrigeration cycles for automotive air conditioning.
IRJET- Performance and Evaluation of Aqua Ammonia Air Conditioner System ...
This document discusses the performance evaluation of an aqua-ammonia air conditioning system for automobiles that uses waste exhaust heat from the vehicle engine. The study examines how the generator and absorption refrigeration system can utilize the available waste heat. Results found that the cooling capacity was affected by the ammonia concentration and provided acceptable cooling between 1-1.5 tons. The coefficient of performance was highest at higher generator and evaporator temperatures but decreased with increasing condenser and absorber temperatures. Overall, the study shows that an aqua-ammonia vapor absorption system has the potential to provide air conditioning for vehicles using only waste exhaust heat from the engine.
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IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and TechnologyIRJET- Performance of Homogeneous Charge Compression Ignition Engine with Euc...
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2) Results showed performance decreased with HCCI operation but emissions of NOx, HC, and smoke reduced significantly.
3) HCCI aims to combine benefits of gasoline and diesel engines like low soot emissions and high efficiency. It prem
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The document discusses using Zero Stage technology to improve the efficiency and reduce emissions of existing legacy gas turbines used to power compressor stations along pipelines. It works by adding an external compression stage before the gas turbine to optimize combustion conditions and allow the turbine to operate continuously at its most efficient design point, resulting in reduced emissions and increased power output. This can extend the life of older turbines and increase pipeline capacity at a much lower cost than replacement while achieving over 50% reductions in emissions.
GREEN ENGINE 2
The document describes a new type of engine called the Green engine. It has 6 phases (intake, compression, mixing, combustion, power, exhaust) rather than the traditional 4 phases. It has several unique technical features that allow for higher efficiency, lower emissions, and ability to run on multiple fuel types. These include direct air intake, variable compression ratio, direct fuel injection, and constant volume combustion. Prototypes have been developed and it is presented as a promising new engine technology that could help address global energy and environmental issues.
Saving energy with cooling towers
This document discusses various ways to optimize water-cooled cooling systems to reduce energy use. It describes how the efficiency of individual components like chillers and cooling towers has improved over time but greater savings are possible by optimizing overall system design and operation. Some strategies discussed include modulating cooling tower fan speed based on load to balance chiller and fan energy use, using closer cooling tower approach temperatures to lower chiller energy, controlling multi-cell tower fans simultaneously at lower speeds, and optimizing condenser water flow. Proper implementation of these strategies can significantly reduce cooling system energy use.
Ultimate IC engine technology
The document describes an innovative opposed piston engine concept called the Paul Engine that could achieve unprecedented levels of fuel efficiency and power density. Key aspects include using opposed pistons without a cylinder head to improve efficiency, utilizing high compression ratios and supercharging, and incorporating heat recovery from the exhaust and cooling systems. Experimental prototypes demonstrated efficiencies over 50% and power densities up to 600 kW/L. Further developments aim to adapt the concept for automotive and other applications through modifications like a four-stroke cycle and integrating heat recovery into a compact design. The innovations have the potential to revolutionize engine technology by substantially reducing fuel consumption, emissions, weight, and cost.
Recovery of Engine Waste Heat for Reutilization in Air Conditioning System in...
The document proposes recovering engine waste heat in an automobile to power an air conditioning system using vapor absorption refrigeration. It begins with an introduction discussing how air conditioning has become necessary in vehicles and how operating costs are increasing. It then reviews vapor compression and absorption refrigeration systems, engine cooling systems, and compares the two refrigeration methods. The objectives are to identify waste in traditional vapor compression systems, compare characteristics to the proposed vapor absorption system, and analyze strategies to reduce refrigeration costs in vehicles. A literature review found works on using exhaust heat for adsorption cooling but no significant work recovering engine heat for vehicle air conditioning.
Waste heat recovery .pptx
This document discusses waste heat recovery techniques in car engines and the role of nanotechnology applications. It describes how up to 70% of energy in internal combustion engines is wasted as heat in exhaust and coolant systems. Various waste heat recovery technologies are examined, including thermoelectric generators, Rankine cycles, organic Rankine cycles, and turbocharging. Nanotechnology can improve heat transfer by using nanofluids with higher thermal conductivity in coolant systems. Recovering even a portion of wasted heat could improve fuel efficiency and reduce emissions.
ADVANCED INTERNAL COMBUSTION ENGINE RESEARCH
1. The document discusses research on developing a high-efficiency, low-emissions electrical generator that can operate on hydrogen fuels using internal combustion engine technology.
2. Experimental results showed that hydrogen combustion in a rapid compression machine approached constant volume combustion, indicating high efficiency. Combustion occurred very rapidly.
3. The generator design uses a free piston linear alternator configuration to enable high compression ratios and rapid combustion through homogeneous charge compression ignition combustion of hydrogen, with the goal of approaching ideal Otto cycle performance and efficiency.
IC_Engine_Overview.ppt
The document provides an overview of internal combustion engines (ICEs) and their alternatives for vehicle propulsion. It defines ICEs and outlines their history, evolution, types, and classifications. While ICEs have room for improvement in efficiency and reducing pollution, they remain the dominant choice due to their ability to process large amounts of air and burn fuel for power. Gas turbines can process more air than reciprocating engines but require complex engineering. Electric vehicles currently have much lower energy density than gasoline. Overall alternatives face challenges replacing ubiquitous ICEs.
Index.html
The document provides an overview of internal combustion engines (ICEs) and their alternatives for vehicle propulsion. It defines ICEs and describes the key types, including their history and evolution. The document discusses the practical limitations and room for improvement in ICE efficiency and reducing pollutants. It also summarizes gas turbines and explores two main alternatives to ICEs - external combustion engines and electric vehicles - noting the challenges each presents in replacing ICEs.
IC_Engine_Overview.ppt
This document provides an overview of internal combustion engines (ICEs) and their alternatives. It defines ICEs and describes the key types, including their history and evolution. Gas turbines are discussed as an alternative to reciprocating piston engines. The document outlines some of the key factors that must be understood, such as the thermodynamic limits of ICE efficiency and the challenges of reducing pollutant emissions. It also compares the power densities of different engine technologies like gas turbines, diesel engines, fuel cells and gasoline engines to explain the advantages of gas turbines.
ECO FRIENDLY AUTOMOBILE AIR-CONDITIONING UTILIZATION EXHAUST GAS WASTE HEAT O...
Automobile air-conditioning is a necessity of present life. vapour compression refrigeration cycle used in modern automobile and refrigerant 134a are available in automobile. The compressor of automobile air-conditioning is run by engine crankshaft, which reduces the mileage of the
automobile. Waste heat recovery of internal combustion engine are two type, one is direct type or thermal energy or waste heat direct converted into electrical energy by see back effect and other is indirect type waste heat is used for rankine cycle ,sterling cycle or refrigeration cycle.
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Cryo
This document proposes a zero emission vehicle that uses liquid nitrogen (LN2) as a cryogenic fuel in an open Rankine cycle. LN2 offers advantages over current battery technologies in terms of performance and cost. The vehicle would utilize ambient heat to vaporize the LN2, which would then expand in an engine to produce power. Estimates indicate the LN2 system could provide a range of nearly 400 km using 400 liters of LN2 stored onboard. Key components would include an LN2 expander engine, efficient heat exchanger, and insulated cryogenic storage tank. The LN2 vehicle is estimated to have lower operating costs than electric vehicles currently in development.
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES or (FROST FREE HEAT EXCHANGER FOR CRYOGENIC AUTOMOTIVE PROPULSION)
GLOBAL CEMENT ARTICLE
1) Around 47% of the thermal energy used in cement production is wasted, with 35% of that waste heat recoverable to generate up to 30% of a plant's electricity needs.
2) Waste heat recovery reduces operating costs and increases profits, but has not been widely implemented except in China where most installations use steam turbines.
3) New organic Rankine cycle technology provides an alternative to steam turbines for cement plant waste heat recovery, offering efficiencies at lower temperatures without complex vacuum systems.
ADEDAMOLA ONABANJI
This document summarizes the development of an adsorption cooling system with a thermal energy storage-based evaporator for air conditioning applications. Key points include:
- The system uses zeolite 13X/CaCl2 composite adsorbent to adsorb and desorb water as the refrigerant.
- It incorporates a latent thermal energy storage system using pentadecane to reduce temperature fluctuations in the chilled water output.
- Experimental testing showed improvements over previous designs, including higher specific cooling power, lower weight, better coefficient of performance, and more stable chilled water temperatures.
- Further recommendations to optimize the system include integrating solar heating and adding nano-particles to the phase change material for improved
IRJET- A Review Paper on Air-Conditioner Works on Exhaust Gas
This document reviews a proposed air conditioning system for automobiles that uses an absorption refrigeration cycle powered by waste heat from the vehicle's exhaust gases, rather than the conventional vapor compression cycle driven by the engine. It begins with an introduction comparing vapor absorption and compression cycles. Then it discusses the proposed system using ammonia as the refrigerant and exhaust heat as the energy source. The remainder of the document reviews relevant literature on vapor absorption automobile air conditioning systems that also aim to make use of waste exhaust heat rather than engine power. It discusses several studies that analyzed systems using lithium bromide-water and ammonia-water working pairs to power absorption refrigeration cycles for automotive air conditioning.
IRJET- Performance and Evaluation of Aqua Ammonia Air Conditioner System ...
This document discusses the performance evaluation of an aqua-ammonia air conditioning system for automobiles that uses waste exhaust heat from the vehicle engine. The study examines how the generator and absorption refrigeration system can utilize the available waste heat. Results found that the cooling capacity was affected by the ammonia concentration and provided acceptable cooling between 1-1.5 tons. The coefficient of performance was highest at higher generator and evaporator temperatures but decreased with increasing condenser and absorber temperatures. Overall, the study shows that an aqua-ammonia vapor absorption system has the potential to provide air conditioning for vehicles using only waste exhaust heat from the engine.
Cooling of a truck cabin by vapour absorption refrigeration system using engi...
Cooling of a truck cabin by vapour absorption refrigeration system using engi...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and TechnologyIRJET- Performance of Homogeneous Charge Compression Ignition Engine with Euc...
This document discusses testing the performance of a homogeneous charge compression ignition (HCCI) engine running on eucalyptus oil biodiesel. Key points:
1) Tests were conducted on a single cylinder HCCI engine to analyze parameters like brake specific fuel consumption, brake thermal efficiency, and emissions of NOx, HC, and smoke when running on blends of 10% eucalyptus oil biodiesel and 90% diesel.
2) Results showed performance decreased with HCCI operation but emissions of NOx, HC, and smoke reduced significantly.
3) HCCI aims to combine benefits of gasoline and diesel engines like low soot emissions and high efficiency. It prem
Gmrc Conf
The document discusses using Zero Stage technology to improve the efficiency and reduce emissions of existing legacy gas turbines used to power compressor stations along pipelines. It works by adding an external compression stage before the gas turbine to optimize combustion conditions and allow the turbine to operate continuously at its most efficient design point, resulting in reduced emissions and increased power output. This can extend the life of older turbines and increase pipeline capacity at a much lower cost than replacement while achieving over 50% reductions in emissions.
GREEN ENGINE 2
The document describes a new type of engine called the Green engine. It has 6 phases (intake, compression, mixing, combustion, power, exhaust) rather than the traditional 4 phases. It has several unique technical features that allow for higher efficiency, lower emissions, and ability to run on multiple fuel types. These include direct air intake, variable compression ratio, direct fuel injection, and constant volume combustion. Prototypes have been developed and it is presented as a promising new engine technology that could help address global energy and environmental issues.
Saving energy with cooling towers
This document discusses various ways to optimize water-cooled cooling systems to reduce energy use. It describes how the efficiency of individual components like chillers and cooling towers has improved over time but greater savings are possible by optimizing overall system design and operation. Some strategies discussed include modulating cooling tower fan speed based on load to balance chiller and fan energy use, using closer cooling tower approach temperatures to lower chiller energy, controlling multi-cell tower fans simultaneously at lower speeds, and optimizing condenser water flow. Proper implementation of these strategies can significantly reduce cooling system energy use.
Ultimate IC engine technology
The document describes an innovative opposed piston engine concept called the Paul Engine that could achieve unprecedented levels of fuel efficiency and power density. Key aspects include using opposed pistons without a cylinder head to improve efficiency, utilizing high compression ratios and supercharging, and incorporating heat recovery from the exhaust and cooling systems. Experimental prototypes demonstrated efficiencies over 50% and power densities up to 600 kW/L. Further developments aim to adapt the concept for automotive and other applications through modifications like a four-stroke cycle and integrating heat recovery into a compact design. The innovations have the potential to revolutionize engine technology by substantially reducing fuel consumption, emissions, weight, and cost.
Recovery of Engine Waste Heat for Reutilization in Air Conditioning System in...
The document proposes recovering engine waste heat in an automobile to power an air conditioning system using vapor absorption refrigeration. It begins with an introduction discussing how air conditioning has become necessary in vehicles and how operating costs are increasing. It then reviews vapor compression and absorption refrigeration systems, engine cooling systems, and compares the two refrigeration methods. The objectives are to identify waste in traditional vapor compression systems, compare characteristics to the proposed vapor absorption system, and analyze strategies to reduce refrigeration costs in vehicles. A literature review found works on using exhaust heat for adsorption cooling but no significant work recovering engine heat for vehicle air conditioning.
Waste heat recovery .pptx
This document discusses waste heat recovery techniques in car engines and the role of nanotechnology applications. It describes how up to 70% of energy in internal combustion engines is wasted as heat in exhaust and coolant systems. Various waste heat recovery technologies are examined, including thermoelectric generators, Rankine cycles, organic Rankine cycles, and turbocharging. Nanotechnology can improve heat transfer by using nanofluids with higher thermal conductivity in coolant systems. Recovering even a portion of wasted heat could improve fuel efficiency and reduce emissions.
ADVANCED INTERNAL COMBUSTION ENGINE RESEARCH
1. The document discusses research on developing a high-efficiency, low-emissions electrical generator that can operate on hydrogen fuels using internal combustion engine technology.
2. Experimental results showed that hydrogen combustion in a rapid compression machine approached constant volume combustion, indicating high efficiency. Combustion occurred very rapidly.
3. The generator design uses a free piston linear alternator configuration to enable high compression ratios and rapid combustion through homogeneous charge compression ignition combustion of hydrogen, with the goal of approaching ideal Otto cycle performance and efficiency.
IC_Engine_Overview.ppt
The document provides an overview of internal combustion engines (ICEs) and their alternatives for vehicle propulsion. It defines ICEs and outlines their history, evolution, types, and classifications. While ICEs have room for improvement in efficiency and reducing pollution, they remain the dominant choice due to their ability to process large amounts of air and burn fuel for power. Gas turbines can process more air than reciprocating engines but require complex engineering. Electric vehicles currently have much lower energy density than gasoline. Overall alternatives face challenges replacing ubiquitous ICEs.
Index.html
The document provides an overview of internal combustion engines (ICEs) and their alternatives for vehicle propulsion. It defines ICEs and describes the key types, including their history and evolution. The document discusses the practical limitations and room for improvement in ICE efficiency and reducing pollutants. It also summarizes gas turbines and explores two main alternatives to ICEs - external combustion engines and electric vehicles - noting the challenges each presents in replacing ICEs.
IC_Engine_Overview.ppt
This document provides an overview of internal combustion engines (ICEs) and their alternatives. It defines ICEs and describes the key types, including their history and evolution. Gas turbines are discussed as an alternative to reciprocating piston engines. The document outlines some of the key factors that must be understood, such as the thermodynamic limits of ICE efficiency and the challenges of reducing pollutant emissions. It also compares the power densities of different engine technologies like gas turbines, diesel engines, fuel cells and gasoline engines to explain the advantages of gas turbines.
ECO FRIENDLY AUTOMOBILE AIR-CONDITIONING UTILIZATION EXHAUST GAS WASTE HEAT O...
Automobile air-conditioning is a necessity of present life. vapour compression refrigeration cycle used in modern automobile and refrigerant 134a are available in automobile. The compressor of automobile air-conditioning is run by engine crankshaft, which reduces the mileage of the
automobile. Waste heat recovery of internal combustion engine are two type, one is direct type or thermal energy or waste heat direct converted into electrical energy by see back effect and other is indirect type waste heat is used for rankine cycle ,sterling cycle or refrigeration cycle.
Similar to Energy Night 2016 Release Print (20)
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES
Presentation slide CRYOGENIC LIQUID NITROGEN VEHICLES
IRJET- A Review Paper on Air-Conditioner Works on Exhaust Gas
IRJET- A Review Paper on Air-Conditioner Works on Exhaust Gas
IRJET- Performance and Evaluation of Aqua Ammonia Air Conditioner System ...
IRJET- Performance and Evaluation of Aqua Ammonia Air Conditioner System ...
Cooling of a truck cabin by vapour absorption refrigeration system using engi...
Cooling of a truck cabin by vapour absorption refrigeration system using engi...
IRJET- Performance of Homogeneous Charge Compression Ignition Engine with Euc...
IRJET- Performance of Homogeneous Charge Compression Ignition Engine with Euc...
Recovery of Engine Waste Heat for Reutilization in Air Conditioning System in...
Recovery of Engine Waste Heat for Reutilization in Air Conditioning System in...
ECO FRIENDLY AUTOMOBILE AIR-CONDITIONING UTILIZATION EXHAUST GAS WASTE HEAT O...
ECO FRIENDLY AUTOMOBILE AIR-CONDITIONING UTILIZATION EXHAUST GAS WASTE HEAT O...
Energy Night 2016 Release Print
- 1. Diesel engines produce many unwanted emis- sions such as NOx, CO and diesel particulates. Current APUs require reg- ular maintenance and ex- plosive combustion produces considerable noise which nega- tively impacts on driver comfort and wellbeing. Heavy trucks are forced to idle their main engines for up to 8 hours per day in order to provide for “hotel loads” i.e. electrical power and air conditioning when the driver sleeps in their cab. This is highly polluting and fuel inefficient and has been made illegal in many places. Therefore, smaller more suitably sized engines known as auxiliary power units (APUs) are used instead. Virtually all of these APUs are diesel engine-vapor compression refrigeration systems which face diffi- culties of their own. Ultimately, the long-term future of diesel engine technology is unsustainable. A A prototype of the Stir- ling-adsorption system has been built and was tested at NUI Galway. The novel system was benchmarked against a leading conventional APU system across a range of relevant environments and condi- tions. Experimental testing will enable validation of system level models and identify any potential system integration issues. Prototyping the system has enabled overall tech- nology risk reduction and maturation. Stirling engines operate on a closed thermodynamic cycle meaning that they can be driven via ex- ternal combustion and so they will inherently be quiet and produce clean emissions without after treatment. Additionally, the amount of easily extractable waste heat in a Stirling engine is twice that of a diesel engine. This heat, which would otherwise be re- jected, can instead be used to provide useful work and therefore increase the overall fuel utilization of an auxiliary power unit. Adsorption refrigera- tion is virtually identical to vapor compression re- frigeration except that the compression is produced via thermal means as op- posed to piston work. By using special water adsorbent materials like zeolite it is possible to deliver cooling at a coefficient of perfor- mance (COP) of 0.5 using low temperature (<100oC) waste heat such as that found in the cooling loops of Stirling or diesel engines. As adsorption chillers are effectively sol- id-state devices, they are silent, largely maintenance free and demonstrate extreme reliability.Preliminary results shown in the above table indi- cate that the proposed system could offer signifi- cant benefits over conventional technology. The system is currently being analysed at the system level using the state of the art physics-based system modeling tool SimScape. This work will faciliate control algorithm development and system level opti- mization.