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IIR document

An experimental comparison between performances of modular silicon expansion valve and thermal expansion valve in mobile ac system.

• Author(s) : ZHANG Z., ZHU J., LI W., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Car, Superheat, Silicon, Performance, Expérimentation, Evaporator, Expansion valve, Air conditioning, Thermal expansion
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Effects of cryoprotectant on thermal expansion of articular cartilage during freezing process.

[In Chinese. / En chinois.]

• Author(s) : YU H., LI D., XU Y., et al.
• Publication date: 2014/08
• Languages : Chinese
• Keywords : Cryoprotectant, Cartilage, Expérimentation, Cryopreservation, Freezing, Thermal expansion
• Source: Journal of Refrigeration - vol. 35 - n. 158
• Formats : PDF

IIR document

Development and qualification of an experimental method for PCMs liquid phase thermal expansion coefficient measurement.

• Author(s) : KABORE A., SIMO TALA J. V., YOUNSI Z., BOUGEARD D.
• Publication date: 2024/05/31
• Languages : English
• Keywords : PCM, Thermal energy storage, Latent heat, Geometry, Expérimentation, Thermodynamic property, Physical property, Thermal expansion
• Source: 14^th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings:  Paris France, May 29-31, 2024.
• Formats : PDF

Evaluation of the lubrication regime for rotary compressors. Influence of thermal expansions on the minimum film thickness.

• Author(s) : VERA J., SCHILLACI E., RIGOLA J.
• Publication date: 2022/07/15
• Languages : English
• Keywords : Rotary compressor, Lubrication, Thermal expansion, Programming, Case study, Reynolds, Thermodynamic property
• Source: 2022 Purdue Conferences. 26^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.

• Author(s) : ZHANG R., STANKE E. J., ZHANG G., et al.
• Publication date: 2019/04
• Languages : English
• Keywords : Thermostatic expansion valve, Electronic expansion valve, Electric vehicle, Battery, Simulation, Expérimentation, Evaporator, Energy saving, Mobile air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
• Formats : PDF

Comparación del rendimiento térmico de una bomba de calor de expansión directa asistida por energía solar utilizando una válvula de expansión termostática y una válvula de expansión electrónica.

Comparison of the thermal performance of a solar-assisted direct expansion heat pump using a thermostatic expansion valve and an electronic expansion valve. 

• Author(s) : QUITIAQUEZ W., SIMBANA I., ISAZA ROLDAN C. A., NIETO-LONDOÑO C., QUITIAQUEZ P., TOPANTA RAMOS F.
• Publication date: 2020/11/11
• Languages : Spanish
• Keywords : Heat pump, Thermostatic expansion valve, R600a, Isobutane, Compression system, Testing, COP, Expérimentation, Electronic expansion valve
• Source: X Congreso Ibérico y VIII Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2020.
• Formats : PDF

Experimental investigation of water injection in an oil free co-rotating scroll machinery for compressed air energy storage.

• Author(s) : MENDOZA L. C., IGLESIAS A., FAVRAT D., et al.
• Publication date: 2014/07/14
• Languages : English
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Thermal performance of ground source heat pumps that use direct expansion system.

• Author(s) : TAKEDA T., TANAKA D., YOKOYAMA D., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : R410A, Direct expansion, Ground, Heat pump, Performance, Testing, COP
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

3D evaluation of thermal stresses on ceramic-metal composites used at high temperature operation.

• Author(s) : KIM J. W., KIM N. K., STENFELT S., et al.
• Publication date: 2017/04/23
• Languages : English
• Keywords : Composite, Ceramics, Metal, High temperature, Expérimentation, Cryomicroscopy, Thermal expansion
• Source: 5^th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
• Formats : PDF

Recommended by the IIR / IIR document

Synchronized measurements of noise characteristics and flow regimes near the thermal expansion valve using R134a refrigerant.

• Author(s) : ZHANG Y., ELBEL S.
• Publication date: 2021/12
• Languages : English
• Keywords : R134a, Measurement, Expansion valve, Noise, Two-phase flow, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 132
• Formats : PDF

IIR document

Thermal performance of underground heat exchanger for ground source heat pump that uses direct expansion method.

• Author(s) : OKAZAWA R., TAKEDA T., ISHIGURO S.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Energy consumption, Copper, Tube, Direct expansion, Borehole, Heat pump, Ground-source system, Expérimentation, Heat exchanger
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Investigation on the matching performance of a small cryogenic air turboexpander.

• Author(s) : YANG S., LI B., LIU G., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Thermal analysis, Expansion turbine, Simulation, Performance, Pressure, Cryocooler
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Étude des technologies de dessalement thermique "(TVC, MSF, TVC/MSF-BR)".

Survey on thermal desalination technologies "(TVC, MSF, TVC/MSF-BR)".

• Author(s) : AHLEM S., ELAKHDAR M., KAIROUANI L.
• Publication date: 2016/03/24
• Languages : French
• Keywords : Thermal treatment, Comparison, Performance, Expansion, Desalination, Compression, Sea water
• Source: 1st International Refrigeration, Energy and Environment Colloquium. Proceedings: Hammamet, Tunisia, March 24-27, 2016.
• Formats : PDF

Experimental investigation of an ORC system for a micro solar power plant.

• Author(s) : DICKES R., DUMONT O., DECLAYE S., et al.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Rankine, Power plant, Pump, Performance, Expander, Expérimentation, Evaporator, Solar energy, Condenser, Thermal energy storage
• Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Combined sustainability benefits from use of HFOs in commercial cold storage buildings as refrigerants and as expansion agents for thermal insulation foam

• Author(s) : PANSULLA A., PEGALLAPATI A. K., KONTOMARIS K., WYSONG E. B.
• Publication date: 2021/06
• Languages : English
• Source: 2^nd IIR Conference on HFO Refrigerants and Low GWP Blends
• Formats : PDF

The expansion of refrigeration applications of Thermal Energy Storage and PCMs

Based on a selection of papers from two recent IIR conferences, overview of thermal energy storage and PCM applications in the fields of refrigerated transport, display cabinets, fishing vessels, food processing...

• Publication date : 2021/11/29

Market: European heat pump market

- The European Heat Pump Association (EHPA) has published an updated version of its outlook for the European heat pump market. The report shows that after 2 years of very difficult economic times, the market decline has stopped and heat pump...

• Publication date : 2011/02/07

World's biggest store

The so-called world’s biggest cold store – 60-m long, 140-m wide and 36-m high – was installed in Catalonia, Spain, by Aislamientos Aiconsa.

• Publication date : 2011/10/03

Solar cooling: Plans for air-conditioned stadiums in Qatar

When Qatar won the bid to host the 2022 football World Cup in December 2010, it came as a surprise. One of the major causes of scepticism was the average summer temperatures of over 40°C with recent peaks at 50°C. But central to Qatar's bid was a...

• Publication date : 2011/02/11

2005 AHR Expo Innovation award winners

The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

• Publication date : 2004/12/22

Impact of ageing on the energy efficiency of refrigerating household appliances

A recent study shows an average increase in energy consumption of 11% after 2 years of operation and 27% after 16 years for these appliances. Ageing wall insulation and door gasket contribute to this...

• Publication date : 2022/02/28

ICR2019: overview of current refrigeration research topics (part III)

Energy storage, desiccant air conditioning, high-temperature heat pumps and ejector technologies were some of the salient topics of the latest IIR Congress. Continuation of the synthesis of key presentations of ICR2019.

• Publication date : 2019/10/30

Modern cryosurgical techniques and devices

Since the 80’s, device miniaturization makes it possible to introduce endoscopic cryoprobes through natural channels (bronchia, urethra…) without requiring traditional surgery.

• Publication date : 2014/03/11

A design for a liquid-nitrogen-powered vehicle engine could provide an alternative to batteries and fuel cells

The engine developed by Dearman Engine Company (DEC), which is driven by the pressure created as liquid nitrogen (LN2) returns to its gas form could provide a way of powering a vehicle without producing CO2 tailpipe emissions but with a longer...

• Publication date : 2012/03/26

IIR 2023 conference in Ohrid: focus on CO2 heat pumps

As demonstrated at the last IIR conference in Ohrid , heat pumps are a potential development area for the use of CO2, in particular for the thermal management of electric vehicles. 

• Publication date : 2023/05/26
• Subjects: Technology

Performance comparison of R1234yf and R134a

A study published in Applied Thermal Engineering compares the performance of HFC-134a and HFO-1234yf as drop-in alternative in automotive air conditioning systems.

• Publication date : 2017/05/24

Ohrid 2019: latest technology trends for ammonia and CO2

Synthesis of several refrigerating installation case studies using ammonia and CO2 based on papers from the recent IIR conference in Ohrid.

• Publication date : 2019/05/29

Personal thermal comfort thanks to a dual-mode textile

Scientists at Stanford University, California (US) have demonstrated a dual-mode textile that can perform both passive radiative heating and cooling using the same piece of textile.

• Publication date : 2018/05/22

Heat pump systems for HVAC in electric vehicles

Heat pump systems offer an energy efficient option for HVAC in electric vehicles. Recent studies present innovative technologies to further improve the heating and cooling performance of heat pump systems as...

• Publication date : 2021/01/27
• Subjects: HFCs alternatives

Growth in the world heat pump market

The world heat pump market increased 7.2% by volume in 2013 to almost 2 million units.

• Publication date : 2014/09/04
• Subjects: Figures, economy

Technical visit to the Tokyo fish market

At the ICCC conference last June, attendees had the opportunity to participate in technical visits, including a tour of the Tokyo fish market. Alain Le Bail, President of IIR Commission C2, joined the visit and...

• Publication date : 2024/11/15

Cryogenic nitrogen in the food and beverage industry

The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...

• Last update : 2023/11/07
• Langues : French, English
• Themes : Freezing of foodstuffs

Liquefied Natural Gas: production process and cold energy recovery

Liquefied natural gas (LNG) is natural gas that has been cooled to about -160 °C and turned into a liquid to facilitate transportation and storage. A typical LNG supply chain...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

Additive manufacturing of regenerators for caloric cooling

In many areas of engineering, additive manufacturing allows the production of complex and multifunctional products that could not be manufactured using traditional methods. In the...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)