Search results

A residential heat pump system for cooling, heating, dehumidification and outdoor air supply.

• Author(s) : LIANG X. Y., ZHANG J., CAO X., SHAO L. L., ZHANG C. L., YANG C., CHEN X. N., SHU H. F.
• Publication date: 2021/08/31
• Languages : English
• Keywords : Heat pump, Air conditioning, Chiller, Outdoor air, Dehumidification, Modelling, Residential sector, Simulation
• Source: 13^th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
• Formats : PDF

Study on outdoor air cooling system with combined air-side and water-side economizer for data centers. 1. Efficiency comparison of each system.

[In Japanese. / En japonais.]

• Author(s) : SHIMMURA K., YAMASHITA T.
• Publication date: 2014/09
• Languages : English
• Keywords : Outdoor air, Data centre, Comparison, Efficiency, Cooling, Water
• Source: Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan - n. 210

IIR document

Applicability and energy saving potential of thermoelectric radiant panels in high-speed train cabins.

• Author(s) : LIM H., JEONG J. W.
• Publication date: 2019/08
• Languages : English
• Keywords : Train, Thermoelectric cooling, Outdoor air, Simulation, Energy saving, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
• Formats : PDF

Feasibility of controlling heat and enthalpy wheel effectiveness to achieve optimal closed DOAS operation.

• Author(s) : SARFRAZ O., ARMSTRONG P. R., BACH C. K.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Outdoor air, Dehumidification, Desuperheating, Optimization, Expérimentation, Enthalpy, Air conditioning, Evaporative condenser
• Source: 2018 Purdue Conferences. 17^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Retrofit of a liquid desiccant and evaporative cooling-assisted 100% outdoor air system for enhancing energy saving potential.

• Author(s) : KIM M. H., YOON D. S., KIM H. J., et al.
• Publication date: 2016/03/05
• Languages : English
• Keywords : Cooling, Desiccant system, Performance, Evaporative system, Energy saving, Retrofitting, Air conditioning
• Source: Applied Thermal Engineering - vol. 96

Modeling and experiments on a dedicated outdoor air system using liquid desiccant heat and mass exchangers.

• Author(s) : WOODS J., KOZUBAL E., LUTTIK P., FOX D., WARNER J.
• Publication date: 2022/07/10
• Languages : English
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Experimental investigation of dedicated desiccant wheel outdoor air cooling systems for nearly zero energy buildings.

• Publication date: 2022/02
• Languages : English
• Keywords : Expérimentation, Desiccant wheel, Green building, Outdoor air, Heat pipe, Heat exchanger, Thermodynamic property, Cost, Air conditioning, Comparison
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 134
• Formats : PDF

Investigation of air-side fouling of split system outdoor heat exchangers: characterization, performance effects, and frost formation interactions.

• Author(s) : YUILL D., HU Y.
• Publication date: 2021/05
• Languages : English
• Keywords : Fouling, Split system, Heat exchanger, Frosting, Air conditioner, Coil, Heat transfer, Performance
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Design integration of dedicated outdoor air system with variable refrigerant flow system.

• Author(s) : RANE M. V., VEDARTHAM D. M., BASTAKOTI N.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Variable volume, Outdoor air, Dehumidification, Heat transfer, Heat recovery, Air quality, Evaporative system, Refrigerant, Air conditioning
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Inside an energy-efficient upgrade for a historical army band hall.

• Author(s) : SEXTON A., EDWARDS R., NAIR P. E. V., LEED P. E.
• Publication date: 2021/05
• Languages : English
• Keywords : Green building, Energy saving, Energy consumption, Life cycle, Waste heat, Fan-coil unit, Recovery, Chilled water, Chiller, Outdoor air, Case study, USA
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Aire exterior en el trópico.

Outside air in the tropics.

• Author(s) : CABETAS-HERNÁNDEZ A.
• Publication date: 2006/01
• Languages : Spanish
• Keywords : Outdoor air, Humid climate, Design, Cooling, Air conditioning, Hot climate
• Source: Instalador - n. 426

Dynamic defrosting characteristics of air source heat pump and effects of outdoor air parameters on defrost cycle performance.

• Author(s) : CHEN Y. G., GUO X. M.
• Publication date: 2009/09
• Languages : English
• Keywords : Outdoor air, Air-air, Heat pump, Parameter, Humidity, Expérimentation, Defrosting, Thermodynamic cycle
• Source: Applied Thermal Engineering - vol. 29 - n. 13

Vuilleumier-Wärmepumpe für die Hausheizung und Trinkwassererwärmung.

Vuilleumier heat pump used to produce residential heating and hot drinking water.

• Author(s) : HEIKRODT K.
• Publication date: 2000/11/22
• Languages : German
• Keywords : Outdoor air, Vuilleumier, Air-water, Air-air, Heat pump, Energy saving
• Source: DKV-Tagungsbericht Bremen. 2000.

IIR document

MULTIPLE SOURCE HEAT PUMP DEVELOPMENT AT THE UNIVERSITY OF NORTH DAKOTA.

• Author(s) : PENONCELLO S. G.
• Publication date: 1982
• Languages : English
• Keywords : Outdoor air, Air-air, Heat source, Heat pump, Development
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 5 - n. 1
• Formats : PDF

Modelling of a wall inlet in numerical simulation of airflow in livestock buildings.

• Author(s) : BJERG B., SVIDT K., MORSING S., et al.
• Publication date: 2002
• Languages : English
• Keywords : Velocity (fluids, gases), Rearing house, Outdoor air, Opening, Measurement, Air, Modelling
• Source: Agric. Eng. Int. - vol. 4

Singapore experiments with outdoor air thermoelectric cooling

In Singapore, the terrace of a riverside restaurant and children play areas are now cooled by a solid-state thermoelectric cooling technology.

• Publication date : 2019/12/30

Testing a prototype outdoor air conditioner using liquid nitrogen

In September 2022, a start-up is testing a prototype outdoor air conditioning system using liquid nitrogen in a few restaurants.

• Publication date : 2022/09/19
• Subjects: Technology

The first air-conditioned stadium in Qatar

Qatar recently completed the installation of air conditioning in the Khalifa International Stadium, in preparation for FIFA World Cup 2022.

• Publication date : 2017/07/10

An air-conditioned jogging track in a park in Qatar

A 50,000 m² park opened in Al Gharrafa, Qatar. It has the particularity of being equipped with a fully air-conditioned track for pedestrians and joggers. 

• Publication date : 2022/01/28

Cooling solutions for hybrid electric aircraft

The electrification of aircraft propulsive systems requires specific cooling technologies as part of the decarbonation of the aviation industry. A recent review article presents...

• Publication date : 2023/08/25
• Subjects: Technology

The environmental benefits of evaporative cooling

An Eurovent study shows that evaporative cooling could help save up to 56,000 tons of CO2 emissions per year in the future in the European Union. Evaporative cooling is present in half of the projects presented by the eight Global Cooling Prize...

• Publication date : 2019/12/30

Frost detection and defrosting methods: latest advances

A recent Purdue conference paper presents the state of the art regarding methods for retarding the onset of frosting, frost detection techniques and defrosting strategies, including those based on artificial...

• Publication date : 2023/02/21

Heat pump efficiency at low temperatures

A study based on field data shows that heat pumps had significantly higher energy efficiency than oil or gas heating systems, particularly for outdoor temperatures above -10°C. 

• Publication date : 2023/09/22

Energy saving initiatives for cooling in data centres

In January 2021, Europe’s leading cloud and data centre operators signed the Climate Neutral Data Centre Pact, a self-regulatory initiative to become climate neutral by 2030. According to recent studies, free...

• Publication date : 2021/02/25
• Subjects: Environment, Technology

Waste heat recovery to eliminate the novel coronavirus in HVAC systems

A recent study proposes a technique for eliminating SARS-CoV-2 from cleanroom HVAC systems using the recovered heat of exhaust air. The modified system could be easily implemented in...

• Publication date : 2020/09/04

New evaporative cooling system for more energy efficient data centres

A dew point cooling system, which is an indirect evaporative cooling system that approaches the dew point, has reduced the electricity consumption of a UK data centre by 80%. 

• Publication date : 2021/12/15
• Subjects: Technology

Efficient cooling methods to reduce heat stress in pigs

Microclimate parameters such as air temperature and humidity are important indicators of animal welfare. Besides, heat stress is more detrimental to productivity in the swine...

• Publication date : 2020/10/22
• Subjects: Technology

Propane air conditioners: improving leakage safety

The latest research and developments in leakage safety of R290 air conditioners are presented in several articles recently published in the IJR. 

• Publication date : 2023/02/20
• Subjects: HFCs alternatives, Technology

Market assessment and financial schemes for sustainable cooling in Ghana and Senegal

In partnership with the UNEP’s “United for Efficiency”, Ghana and Senegal have implemented financing schemes to replace obsolete ACs and refrigerators, as part of the ECOWAS Refrigerators and Air Conditioners...

• Publication date : 2021/05/17
• Subjects: Developing country, Figures, economy

Extreme heat reduces productivity in global economies

In a recent report, a non-profit organisation examined how global warming is affecting the economy and labour productivity in 12 major urban areas worldwide. 

• Publication date : 2022/10/27
• Subjects: Figures, economy

Two new IIR Informatory Notes on Energy Recovery!

The IIR has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy Recovery Equipment. 

• Publication date : 2021/06/29

The IIR publishes two new IIR Informatory Notes on Energy Recovery!

The International Institute of Refrigeration (IIR) has just published two new Informatory Notes on energy recovery: one on Energy Recovery in Mechanical Ventilation Systems and the other one on Air-to-Air Energy...

• Publication date : 2021/07/13
• Subjects: Technology, Environment

Editorial by Arne Bredesen

The General Conference of the IIR endorsed the IIR Strategic Plan during the Sydney Congress in September 1999. This document defined key directions for the future. The preparation of the Strategic Plan involved 200 people, both from within the...

• Publication date : 2004/04/28

SophiA project: HKA Lab test progress

SophiA HKA (Karlsruhe University of Applied Sciences) Lab test is intended to provide a better understanding of the cooling system in in different climate zones.

• Publication date : 2023/10/27

Training and courses: Accessible opportunities online

The IIR has taken care to provide you with an exclusive selection of digital training and course material on the main themes of HVACR, including a section dedicated to certification courses from reputable international organisations and companies...

• Publication date : 2017/10/03

Editorial by François Billiard

I am moved as I write these lines: I left the IIR on October 1, 2004, following a 5-year mandate as Director; the Executive Committee elected me on June 13, 1998. Thanks to the IIR's members, the members of its statutory committees, and the staff...

• Publication date : 2004/11/10

Commission C2: paving the way on food science & engineering

Coordinated by the Science and Technology Council, Commission C2 focuses on research and breakthrough technologies related to food science and engineering.

• Publication date : 2015/04/01

Member news: latest innovations from Mirai Intex

The company Mirai Intex has just marketed a refrigeration machine using air cycle for low temperatures. Mirai Intex also markets a mobile storage solution. 

• Publication date : 2022/03/29

Editorial by Didier Coulomb

Since 2007, the International Institute of Refrigeration (IIR) has conducted strategic discussions on its missions and services. This process began internally then took on board the outcomes of two surveys conducted at the beginning of this year...

• Publication date : 2009/08/13

A new version of the ATP Agreement

The new version on the international carriage of perishable foodstuffs and on the special equipment to be used for such carriage became effective from 30 September 2015. The IIR was involved in this process thanks to its Commission D2...

• Publication date : 2015/10/20

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 : English, French
• Themes : Freezing of foodstuffs