one of the renewable energy resources project that help me lot to my carrier in research field : this slide is for the prototype model that i design actual full scale size may be bit of different from my calculations and data's
one of the renewable energy resources project that help me lot to my carrier in research field : this slide is for the prototype model that i design actual full scale size may be bit of different from my calculations and data's
Classification, Advantages and applications, Commercially viable
waste heat recovery devices, Saving potential.
Waste heat is heat, which is generated in a process by way of fuel combustion or chemical
reaction, and then “dumped” into the environment even though it could still be reused for some
useful and economic purpose. The essential quality of heat is not the amount but rather its
“value”. The strategy of how to recover this heat depends in part on the temperature of the waste
heat gases and the economics involved.
Thermal Analysis of Steam Turbine Power PlantsIOSR Journals
: Steam are a major energy consumer. Optimising process operating conditions can considerably
improve turbine water rate, which in turn will significantly reduce energy requirement. Various operating
parameters affect condensing and back pressure turbine steam consumption and efficiency. The industrial
sector is the largest energy consumer, accounting for about 30 % of total energy used. Fuel and energy prices
are continuously rising. With the present trend of energy prices and scarcity of hydrocarbon resources lowering
energy requirement is a top priority. Energy conservation benefits depend on the adopting minor or major
modifications and using the latest technology. Turbines are designed for a particular operating conditions like
steam inlet pressure, steam inlet temperature and turbine exhaust pressure/ exhaust vacuum, which affects the
performance of the turbines in a significant way. Variations in these parameters affects the steam consumption
in the turbines and also the turbine efficiency. The present study was done to improve the power output of the
turbine, thermal efficiency and specific steam consumption in conventional steam power plants. Three cycles i.e
regenerative cycle, superheater cycle and cogeneration cycle are considered to formulate the data and obtain a
better result in steam turbine power plants
Thermal Power plant familarisation & its AuxillariesVaibhav Paydelwar
PPT in Relation to Power Plant familarisation, Coal to Electricity Basics,Power Plant cycles, Concepts of Supercritical Technology Boiler, Concepts Of BTG Package as well as Balance of Plant
Elgen Tech - next generation Waste Heat to Power plantRussianCarbonFund
Next generation Waste Heat to Power plant seeks for investment.
About 50% of generated industrial energy is lost via waste heat streams. Our team developed next generation organic Rankine cycle power generation unit which converts 100 – 500 C° temperature heat into electrical energy with record efficiency – 28% and lowest installed costs on the market – 1500 USD per 1 kW. Our team seeks for investment which will be matched by Skolkovo Foundation grant.
Industrial heat pumps, using waste process heat as the source, deliver heat at a higher temperature for use in industrial process heating, preheating, or space heating. There is debate over their definition, but, in general, they represent a worthwhile method of improving the energy efficiency of industrial processes and reducing primary energy consumption.
Industrial heat pumps (IHPs) offer various opportunities in all types of manufacturing processes and operations. Increased energy efficiency is certainly their most obvious benefit, but few companies have realized the untapped potential of IHPs in solving production and environmental problems. This Application Note demonstrates that IHPs can offer the least-cost option for removing bottlenecks in production processes and allowing greater product throughput and, in fact, may be an industrial facility’s best way of significantly and cost-effectively reducing combustion-related emissions.
case study on dance food processing industry(process integration)Vikram Kataria
this presentation includes case study on dance food processing industry and the best process integration techniques that they used to solve problems in their industry.
Classification, Advantages and applications, Commercially viable
waste heat recovery devices, Saving potential.
Waste heat is heat, which is generated in a process by way of fuel combustion or chemical
reaction, and then “dumped” into the environment even though it could still be reused for some
useful and economic purpose. The essential quality of heat is not the amount but rather its
“value”. The strategy of how to recover this heat depends in part on the temperature of the waste
heat gases and the economics involved.
Thermal Analysis of Steam Turbine Power PlantsIOSR Journals
: Steam are a major energy consumer. Optimising process operating conditions can considerably
improve turbine water rate, which in turn will significantly reduce energy requirement. Various operating
parameters affect condensing and back pressure turbine steam consumption and efficiency. The industrial
sector is the largest energy consumer, accounting for about 30 % of total energy used. Fuel and energy prices
are continuously rising. With the present trend of energy prices and scarcity of hydrocarbon resources lowering
energy requirement is a top priority. Energy conservation benefits depend on the adopting minor or major
modifications and using the latest technology. Turbines are designed for a particular operating conditions like
steam inlet pressure, steam inlet temperature and turbine exhaust pressure/ exhaust vacuum, which affects the
performance of the turbines in a significant way. Variations in these parameters affects the steam consumption
in the turbines and also the turbine efficiency. The present study was done to improve the power output of the
turbine, thermal efficiency and specific steam consumption in conventional steam power plants. Three cycles i.e
regenerative cycle, superheater cycle and cogeneration cycle are considered to formulate the data and obtain a
better result in steam turbine power plants
Thermal Power plant familarisation & its AuxillariesVaibhav Paydelwar
PPT in Relation to Power Plant familarisation, Coal to Electricity Basics,Power Plant cycles, Concepts of Supercritical Technology Boiler, Concepts Of BTG Package as well as Balance of Plant
Elgen Tech - next generation Waste Heat to Power plantRussianCarbonFund
Next generation Waste Heat to Power plant seeks for investment.
About 50% of generated industrial energy is lost via waste heat streams. Our team developed next generation organic Rankine cycle power generation unit which converts 100 – 500 C° temperature heat into electrical energy with record efficiency – 28% and lowest installed costs on the market – 1500 USD per 1 kW. Our team seeks for investment which will be matched by Skolkovo Foundation grant.
Industrial heat pumps, using waste process heat as the source, deliver heat at a higher temperature for use in industrial process heating, preheating, or space heating. There is debate over their definition, but, in general, they represent a worthwhile method of improving the energy efficiency of industrial processes and reducing primary energy consumption.
Industrial heat pumps (IHPs) offer various opportunities in all types of manufacturing processes and operations. Increased energy efficiency is certainly their most obvious benefit, but few companies have realized the untapped potential of IHPs in solving production and environmental problems. This Application Note demonstrates that IHPs can offer the least-cost option for removing bottlenecks in production processes and allowing greater product throughput and, in fact, may be an industrial facility’s best way of significantly and cost-effectively reducing combustion-related emissions.
case study on dance food processing industry(process integration)Vikram Kataria
this presentation includes case study on dance food processing industry and the best process integration techniques that they used to solve problems in their industry.
Design Calculation of Lab Based Vapour Compression Systemijtsrd
This paper deals with experimental investigation to calculate the value of main components of vapor compression refrigeration system and experimental results by using three different length of the capillary tube. At present, there are many types of refrigeration systems but the most widely used is vapor compression refrigeration system. This system is mainly used in air conditioning in buildings, electronic materials, automobile air conditioners, freezers, household refrigerators and even in supermarkets. This lab based refrigeration system is used R 134a because it can be replaced successfully for R 12 refrigerant and useful for many applications now. Moreover, it can be handling safely and has no damage effect to ozone layer. Ko Ko | Khin Maung Than | Aye Aye San "Design Calculation of Lab Based Vapour Compression System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29213.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/29213/design-calculation-of-lab-based-vapour-compression-system/ko-ko
Design and Fabrication of Vapour Absorption Refrigeration System [Libr-H20]IJMER
Most of the energies are utilized by the industries due to depletion of fossil fuels and
increasing the fuel price to exploit the maximum presented energy from the waste heat source. The
industry which utilizes steam turbine exhaust carries a considerable amount of thermal energy. This
energy can be set in to positive use as a heat source for vapour absorption system to serves as cooling
system. This paper illustrates the thermal and fiscal advantages of using single effect lithium bromide
water absorption by means of waste heat. The objective of this work is to hypothetical design of lithium
bromide water absorption Refrigeration system using waste heat from any industry steam turbine
exhaust
The effect of Al2O3 nanoparticles on the performance of heat pump to improve its
operational efficiency was presented in this theoretical and experimental study. In the
experimental work the heat pump charged with R600a inclusive with 0.06 % vol. of
Al2O3 and used as a nanorefrigerant. Three different nanoparticles size 20nm, 40 nm
and 50 nm of Al2O3 have been used for the preparation of nanolubricant in the present
study. The theoretical approach includes simulations modeling the heat pump
components such as compressor, evaporator, condenser and an expansion valve by
computer of the heat pump system by using commercial MATLAB. The results showed
that the addition of nanoparticles to the refrigerant will improve its characteristics of
refrigeration system heat transfer and thermal properties. Also, it showed that the
using nanorefrigerant in refrigeration system will work normally at all conditions
employed in this work. The experimental results found that the heat pump coefficient
of performance increased by 19.1%, but the power consumption reduced by 21.8 %
when using a mineral oil with 20 nm nanoparticles size of Al2O3 instead of the
conventional mineral oil only. Finally, the refrigeration effect increased and work of
compressor decreased by using a small nanoparticles size of Al2O3
EXPERIMENTAL INVESTIGATION OF WASTE HEAT RECOVERY SYSTEM FOR DOMESTIC REFRIGE...IAEME Publication
The objective of this project was to determine the energy savings associated with improved utilization of waste heat from a domestic refrigerator. Domestic refrigerators maybe operate
continuously to maintain proper food storage condition. The continual operation of this equipment accounts more electrical energy consumption. Furthermore, a significant amount of waste heat is rejected by the condensers of refrigerator.
An exclusive, in-depth look at the latest natural refrigerants-based technology trends in different applications around the globe with Prof. Dr.-Ing. Armin Hafner, NTNU (Norwegian University of Science and Technology).
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Assuring Contact Center Experiences for Your Customers With ThousandEyes
Opportunities of climate and energy efficiency co benefits
1. OPPORTUNITIES OF
CLIMATE & ENERGY EFFICIENCY CO-BENEFITS
USING THE ‘NATURAL 5’ REFRIGERANTS.
Jan Boone
MAYEKAWA EUROPE S.A.,Leuvensesteenweg 605, 1930 Zaventem, Belgium
Tel. 32-2-757-9075, Fax. 32-2-757-9023, e-mail : jan.boone@mayekawa.eu
‘NATURAL 5’ LINE-UP.
Mayekawa was founded in 1924 and is to-day one of the world’s largest industrial refrigeration
companies. It actively promotes the ‘NATURAL 5’ refrigerants, including ammonia, CO2, hydrocarbon
gasses, air and water. Mayekawa is active in ammonia compressors for more than 85 years, for
hydrocarbons and CO2 for more than 40 years.
In the ‘NATURAL 5’ overview table the different solutions are summarized for each natural refrigerant
from cryogenics, freezing, cooling, air conditioning up to heating.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 1
2. FIELD CASES
NEWTON3000 (NH3 COMPRESSION REFRIGERATION + CO2 SECONDARY BRINE)
Mycom developed the ‘NEWTON3000’, a semi-hermetic compressor for use in industrial refrigerated
warehouses, based on 2-stage screw compressors and IPM drive motor.
The design targets were :
High efficiency
Low charge (by use of direct expansion system and CO2 as secondary brine)
Less leakage (by use of semi-hermetic motors)
The photo illustrates the compact NEWTON3000 with semi-hermetic compressor-motor built on the
NH3 condenser, oil separator, NH3/CO2 cascade evaporator/condenser, CO2 receiver, control panel etc.
The benefits of the IPM motor are :
5 to 10% better in efficiency
40% smaller in size
High rotation speed possible
The field reference is a Food Distribution Center installed in Japan using NEWTON3000 modules
producing -30°C CO2 by evaporating NH3 at -34°C.
The case study shows that the power consumption and the CO2 emission were reduced with 30% for
the NEWTON3000 compared to the conventional system.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 2
3. NH3 COMPRESSION REFRIGERATION
An overview of most commonly used piston and screw compressors, by showing the theoretical gas
displacement volumes, is given with range 15->1300 m3/hr for pistons and 200->15.600 m3/hr for screw
compressors.
Page 13 shows an 80.000m3 Food Store Plant in France using for the freezing part NH3/CO2 secondary
brine equipment producing 1200kW CO2 at -30°C. The machines are operating approx. 30.000 hrs.
Mycom compound screw compressors(4x) with individual NH3 circuit, each connected to their cascade
NH3-evaporator/CO2-condenser(installed on top of the common CO2 receiver with liquid pumps) are
equipped with variable speed control. Minimum NH3 charge is obtained by applying plate in shell type
heat exchangers.
Page 14 shows an Ice Cream Factory with big size Mycom compound compressor units(part of the plant)
installed since 2003 producing 3450 kW at -42°C with NH3 compression, having approx.28.000 hrs of
operation.
NH3 HEAT PUMPS
The NH3 heat pumps are executed with high pressure compressors to cover the higher output
temperature requirements.
The reciprocating compressor model N6HK is a 50 bar compressor, of which many compressors are
operating in the field, covering a swept volume from 120 up to 200 m3/hr depending on the rotation
speed controlled by means of a frequency convertor.
New higher pressure reciprocating compressor models N4HS and N6HS are available very soon.
For the 50 bar screw compressors, 3 models are available in the swept volume range of 400 to 3900
m3/hr depending on the rotation-speed with capacity range 190 kW up to nearly 10 mW depending on
the required hot water outlet temperature.
HP field reference 1 is an over-compression HEAT-PUMP to produce 60°C hot water for meat factory
process.
The plant scheme shows on the bottom side the refrigeration plant with heat produced at the
condenser at condensing temperature of 40°C.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 3
4. The heat pump plant is shown on the top side :
The heat pump compressor takes the gas from the high pressure side of the refrigeration plant at the
refrigeration compressor outlet to the low pressure side of the heat pump compressor via a gas cooler
and a suction gas liquid heat exchanger. The heat pump is compressing the ammonia gas from 40°C to
65°C and produces hot water of 60°C from the inlet water at 12°C by using the sensible heat exchanger
and the suction gas/liquid heat exchanger.
With this combination of heat exchangers it is possible to achieve a coefficient of heating performance
from 6.0 up to 9.0
The unit layout shows the compressor-motor set with the oil separator, the sensible heat exchanger,
condenser and high pressure liquid receiver.
The photo’s of the installation show the heat pump system installed at the machine room and the
thermal stratification tank applied for the buffering of the hot water.
The plant is operational since 2008 and operated approx. 4000 hrs with a hot water output of 400kW at
60°C.
HP field reference 2 is an over-compression HEAT- PUMP to produce 77°C hot water for district heating.
The plant scheme shows on the bottom side the refrigeration plant with heat produced at the
condenser at condensing temperature of 30 to 40°C taken from the low stage heat recovery evaporator.
The heat pump plant is shown on the top side :
The heat pump compressor takes the gas from the high pressure side of the refrigeration plant at the
heat recovery vessel at the low pressure side of the heat pump compressor. The heat pump is
compressing the ammonia gas from 30/40°C to 80°C and produces hot water of 77°C from the inlet
water at 60°C.
With this system it is possible to achieve a coefficient of heating performance from 4.0 up to 5.2, with
heating output capacity from 407kW to 1104kW depending on the intermediate ammonia
temperature(30->40°C) and the system load (1800->3600rpm) per compressor. Two compressors are
installed in this heat pump plant.
The unit layout shows the compressor-motor set with the oil separator.
The photo’s of the installation show the heat pump system installed at the machine room with low stage
compressors and heat exchangers.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 4
5. CO2 TRANCRITICAL HOT WATER HEAT PUMP
Mycom developed the ‘ECO-CUTE’ with a semi-hermetic 150 bar piston type compressor for production
of hot water or hot air by using transcritical CO2 compression.
The source can be water or air.
On page 19 an Industrial Hot water Production Package is shown with air-source (alternative water-
sourced)
The field reference is a 90°C hot water supply installation for a company complex in Japan.
The ‘ECO-CUTE’ produces the water (which is available at maximum 65°C) up to 90°C which is than
buffered in the Hot Water Storage Tank. The hot water production capacity is approx.90kW per hour.
From the hot water storage tank the water is used at controlled temperature for the different purposes
in the building.
The application targets for this hot water production unit are hospitals, hotels, welfare institutions,
sport facilities, bathing facilities, facilities for boarding, food factories etc.
The case study shows that the power consumption and the CO2 emission were reduced with 62% for
the ECO-CUTE compared to the conventional fuel boiler system.
CO2 COMPRESSION REFRIGERATION
Is used mostly in cascade systems where NH3 is used on the high stage.
Mycom produces several high pressure compressors (ref.NH3 heat pumps above) which can be used for
the compression of CO2.
The schematic diagram shows the NH3 and the CO2 cycle, each with compressor, evaporator, condenser
and expansion device. The NH3 evaporator/CO2 condensor functions as cascade heat exchanger
between the 2 circuits.
Equipment for compression of CO2 for liquefaction purpose has been produced by Mycom for more
than 40 years.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 5
6. The field reference is related to a meat processing installation in Nederland installed in 2005.
On the low temperature CO2 side 5 high pressure compressors are installed on different temperature
levels -51°C, -41°C and -31°C, which cover respectively 4200kW, 2600kW and 3000 kW plant
performance.
1 compressor, with design pressure 50 bar, is used for defrosting of the freezers at +10°C.
On the NH3 high stage 7 screw compressors are installed.
The average operating hours per machine is approx. 38.000 hrs.
HYDROCARBON COMPRESSION
An Industrial Hydrocarbon Refrigerant Package is shown for Air-Conditioning and Heating.
The field reference is a 7°C chilled water production installation of 140 kW in Japan.
The application targets for this Hydrocarbon Refrigeration package are food factories, hotels and office
buildings.
The case study shows that the power consumption and the CO2 emission were reduced with 16 to 14
for the ‘HYDRO-CARBON’ compared to the conventional R134A system.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 6
7. ADSORPTION CHILLER
An Adsorption Chiller Utilizing Renewable Energy is shown for chilled water production.
Possible heat sources can be solar heat, waste heat, power station waste heat, boiler exhaust heat,
process waste heat, etc.
The cooling is done by applying condenser (watercooled, evaporative type)
The field reference is a 9°C chilled water production installation of 350 kW in Japan.
The application targets for this Adsorption Chiller are factories, food factories, hospitals, shopping
centers, offices etc.
The case study shows that the power consumption and the CO2 emission were reduced with 64% for
the ‘ADSORPTION CHILLER’ compared to the conventional R134A chiller system.
AIR COMPRESSION REFRIGERATION
An AIR CYCLE Refrigeration System is shown for low temperature applications in the range of -50°C to
-120°C.
The field reference is a -60°C Ultra Cold Freezing Storage of 5.000m3 in Japan.
The AIR CYCLE Refrigeration System is composed of 3 parts : an expander-integrated compressor
(compression & expansion), a primary cooler (heat dissipation) and a heat-recovery heat exchanger.
The most suitable markets for this Ultra-low temperature refrigerators are tuna & bonito food factories
and rapid freezers etc.
The case study shows that the power consumption and the CO2 emission were reduced with 54% for
the ‘AIR CYCLE REFRIGERATION SYSTEM’ compared to the conventional R22 two-stage compression
refrigerator system.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 7
8. CONCLUSION
The main goal of this Roundtable on Climate and Ozone-friendly technologies in Refrigeration and Air-
Conditioning has been achieved !
1. All ‘NATURAL 5’ REFRIGERANTS comply with a GWP between 0 and 3.
(NH3,AIR,WATER : 0, HCO2 : 1, HYDROCARBONS : 3)
2. All ‘NATURAL 5’ REFRIGERANTS comply with an ODP = 0.
3. The examples from the field shown in this presentation,
all result in significant reductions of CO2-emission and energy consumption :
NH3 NEWTON3000 : -30%
NH3 hot water : -75%
CO2 hot water : -62%
HC chilled water : -14%
ADSORPTION chilled water : -64%
AIR ultra cold air : -54%.
The shown results are taken from the field cases presented in this paper and do not represent in
general every ‘NATURAL 5’ application as those need to be evaluated case by case.
In any case the field cases results are based on real operational equipment.
The results show attractive positive trends of improvements.
Therefore good design praxis is vital to obtain similar or better results than shown in this paper.
Roundtable, Belgrade 10-11 May 2011 DOC.2011-244 R1 Page 8