Search results

Effect of Compressor-Discharge-Cooler Heat-Exchanger Length Using Condensate Water on the Performance of a Split-Type Air Conditioner Using R32 as Working Fluid.

• Author(s) : SUMERU K., PRAMUDANTORO T. P., SETYAWAN A., MULIAWAN R., TOHIR T., SUKRI M. F. bin
• Publication date: 2022/11
• Languages : English
• Keywords : Air conditioning, Subcooling, Condensate, Water, Cooling capacity, Compressor, Discharge, R32, Expérimentation, Commercial building, Split system, Heat exchanger
• Source: Energies - 15 - 21
• Formats : PDF

A non-iterative balancing method for HVAC duct system.

• Author(s) : CHEN H., CAI W., WANG Q.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Performance, Optimization, Modelling, Duct, Air conditioning, Air distribution
• Source: 2016 Purdue Conferences. 4^th International High Performance Buildings Conference at Purdue.
• Formats : PDF

Stratum ventilation - a solution to meet challenges to contemporary air distribution.

• Author(s) : ZHANG L.
• Publication date: 2014/06
• Languages : English
• Keywords : Velocity (fluids, gases), Generality, Ventilation, Temperature, Thermal comfort, Air distribution
• Source: REHVA Journal - vol. 51 - n. 4

IIR document

Energy conservation in room air conditioner unit by recovering cold energy from condensate.

• Author(s) : NETHAJI N., MOHIDEEN T., NETHAJI M.
• Publication date: 2019/08
• Languages : English
• Keywords : Humid climate, Condensate, Air conditioner, Temperature, Recovery, Expérimentation, Energy saving, Thermal comfort, Tropical climate
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
• Formats : PDF

Energy performance comparison of fans with variable speed drives.

• Author(s) : HAUER A.
• Publication date: 2016/11/09
• Languages : English
• Source: ASHRAE Journal - vol. 58 - n. 11

Recommended by the IIR

Using Deep Learning in Real-Time for Clothing Classification with Connected Thermostats

• Author(s) : MEDINA A., MÉNDEZ J. I., PONCE P., PEFFER T., MEIER A., MOLINA A.
• Publication date: 2022/03
• Languages : English
• Source: Energies - 15 - 5
• Formats : PDF

Stochastic model predictive control of mixed mode buildings based on probabilistic interactions of occupants with window blinds.

• Author(s) : SADEGHI S. A., KARAVA P.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Energy consumption, Building, Simulation, Prediction, Window, Control (generic), Thermal comfort, Air conditioning
• Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
• Formats : PDF

Assessment of long term visual and thermal comfort and energy performance in open space office with different shading devices.

• Author(s) : ATZERI A. M., CAPPELLETTI F., SHEN H., et al.
• Publication date: 2014/07/14
• Languages : English
• Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
• Formats : PDF

Water Transmission Mechanisms in Advanced Ionic Membranes for HVAC Applications.

• Author(s) : MCANDREWS D., GU T., BANDLORE A., BAHAR B.
• Publication date: 2021/08/31
• Languages : English
• Keywords : Air conditioning, Membrane, Ionic liquid, Permeability, Expérimentation, Testing, Heat pump
• Source: 13^th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
• Formats : PDF

IIR document

Reproducibility assessment of an emulator-type load-based testing methodology.

• Author(s) : DONDINI D., GIANNETTI N., MIZUNO A., MIYAOKA Y., SAITO K.
• Publication date: 2024/03
• Languages : English
• Keywords : Air conditioning, Heat pump, Performance, Testing, COP, Air conditioner
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 159
• Formats : PDF

Experimental study on performance of segmented handling air-conditioning system under part load conditions.

[In Chinese. / En chinois.]

• Author(s) : JIANG X., LIANG C.
• Publication date: 2014/10
• Languages : Chinese
• Keywords : Air conditioner, Chiller, Performance, Expérimentation, Part load
• Source: Journal of Refrigeration - vol. 35 - n. 159
• Formats : PDF

Use of VFDs in HVAC retrofit applications.

• Author(s) : SRIDHAR V.
• Publication date: 2015/09
• Languages : English
• Keywords : Variable speed, Design, Performance, Retrofitting, Air conditioning
• Source: Air Conditioning and Refrigeration Journal, SIM - vol. 3 - n. 3
• Formats : PDF

Analyse psychrométrique des systèmes de climatisation.

Psychometric analysis of air conditioning systems.

• Author(s) : GHIAUS C.
• Publication date: 2016/01
• Languages : French
• Keywords : Humid air, Air treatment, Modelling, Sensible heat, Latent heat
• Source: Revue générale du Froid & du Conditionnement d'air - n. 1155

Distribution performance assessment and structure optimization of distributor applied in small-diameter air conditioner.

[In Chinese. / En chinois.]

• Author(s) : YANG G., WENG X., DING G., et al.
• Publication date: 2016/04
• Languages : Chinese
• Keywords : CFD, Air conditioner, Distributor, Performance, Modelling, Expérimentation
• Source: Journal of Refrigeration - vol. 37 - n. 168
• Formats : PDF

IIR document

A practical calibration procedure for the balanced ambient room type calorimeter in testing the cooling capacity of room air conditioner.

• Author(s) : HANG C., ZHANG H., XU D., et al.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Heat balance, Calorimeter, Calibration, Measurement, Air conditioner, Cooling capacity, Model, Leakage
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

US research projects to cut AC energy consumption

The 15 projects selected by Advanced Research Projects Agency-Energy (ARPA-E) – within the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) are developing new approaches and technologies for building cooling equipment and air...

• Publication date : 2012/09/19

Alternative Cooling Technologies conference, London, 1st February 2005

This conference, which was co-sponsored by the UK Institute of Refrigeration and organised commercially by RAC magazine, was well attended with about 140 people present. It was arranged in five sessions. In the first session, speakers from UK...

• Publication date : 2005/02/11

Briefs: Dehumidification and cooling system cuts energy consumption by 43% in meat processing plant

Cooling and dehumidification costs in a meat plant in Germany have been reduced by a system using hot and cold water from other processes. According to DuCool, TönniesFleisch plant in Rheda-Wiedenbrück is saving annually 165 000 € in electricity...

• Publication date : 2009/08/13

Briefs: Japan: refrigerant leakage larger than expected

According to a survey conducted by the Ministry of Economy, Trade and Industry (METI) of Japan, leakage of fluorinated refrigerants used in air-conditioning equipment in the country is on the average 10 times greater than estimated. METI collected...

• Publication date : 2009/08/13

US: EPA proposes new alternative automobile AC refrigerants

EPA is proposing to list two refrigerants, HFC-152a and CO2, as acceptable alternatives for motor vehicle air-conditioning systems, provided that the automotive industry complies with the necessary conditions to deploy them in a safe manner. These...

• Publication date : 2007/01/24

Briefs: New recycling scheme for air-conditioning equipment

The WEE European directive, due to come into force within 2-3 years is already triggering responses from manufacturers. In this sense, Daikin is even going beyond the requirements of the directive for recycling electrical and electronic goods and...

• Publication date : 2008/02/12

Briefs: USA

- The US Department of Energy (DOE) has published on August 31 the first energy efficiency standards for refrigerated vending machines. The new standards take effect in 2012 and over the following 30 years, DOE estimates it will save about 47 TWh...

• Publication date : 2009/12/09

ASHRAE Technology Awards: winning project features green design

The ASHRAE Technology Awards recognize outstanding achievements by members who have successfully applied innovative building design in the areas of occupant comfort, indoor air quality (IAQ) and energy conservation. The designs incorporate ASHRAE...

• Publication date : 2005/06/14

HFO-1234yf news

HFO-1234yf, developed by DuPont and Honeywell as a substitute for HFC-134a in mobile air-conditioning applications in response to EU 2006/40 Directive which bans the use of refrigerants with a GWP higher than 150 in new types of vehicles by...

• Publication date : 2011/02/04

Mine cooling

Cooling the world's deepest single-shaft mine: cooling Anglogold Mponeng gold mine in Gauteng, South Africa, is a challenge - the mine is 3.68 km deep and without cooling, temperatures can reach 60°C at the mine face. Six 3.5 MW Eco-Vim...

• Publication date : 2006/01/28

Intense competition for the next-generation MAC refrigerant

Less than 3 years before the January 1, 2011 deadline for using fluorinated gases (F-gases) with a GWP higher than 150 in the new models of cars according to the European Directive 2006/40 on emissions from mobile air-conditioning (MAC) systems,...

• Publication date : 2008/05/13

Ozone depletion and global warming

As an intergovernmental organization, the International Institute of Refrigeration (IIR) is invited to attend the annual conferences on the ozone layer (and the Montreal Protocol), on climate change (and the Kyoto Protocol), and to present a...

• Publication date : 2007/02/12

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

Are hydrocarbons in room air conditioners risky?

A team from GIZ Proklima used quantitative risk assessment tools to estimate the severity and frequency of ignition HC-600a (iso-butane) and HC-290 split air conditioners and domestic refrigerators.

• Publication date : 2015/02/12

A reviving global air-conditioning market

According to BSRIA figures, in 2011, the world air-conditioning market increased by 13% compared with 2010.

• Publication date : 2012/05/21
• Subjects: Figures, economy

IIR Working Party on Refrigerant Charge Reduction in Refrigerating Systems: Join Us!

Suitable design of refrigerating systems has several benefits in terms of limitation of the environmental impact thanks to a reduction in the energy consumption and the limitation of refrigerant emissions. The direct greenhouse effect accounts for...

• Publication date : 2008/10/25

Valuable publications: Refrigeration and Air Conditioning

A new edition of Refrigeration and Air Conditioning, fully revised and updated by Guy Hundy was published in July 2008. This 392-page book is an introductory text and ideal for new entrants to the industry, particularly suited to students and...

• Publication date : 2009/05/18

Conference update: Cambridge

The 1st IIR Conference on Sustainability and the Cold Chain is to be held on March 29-31, 2010. The conference, which will attract an international audience of researchers and industrialists, will bring together those with an...

• Publication date : 2009/12/09

June 2004: fruitful meetings of the IIR’s statutory committees

Here are some highlights of the annual meetings of the IIR's statutory bodies (Management Committee, Science and Technology Council [STC] and Executive Committee): Strategic Plan of the IIR Four years after having adopted its Strategic...

• Publication date : 2004/07/27

IIR Conference report: Ohrid

The 4th IIR Conference on Ammonia Refrigeration Technology took place in Ohrid, Macedonia (FYROM), on April 14-16, 2011. 111 persons from 33 countries attended. Scientific papers were presented, and policy and regulations issues were covered.

• Publication date : 2011/05/13

Spotlight on Commission B2: at the forefront of refrigerating equipment

Coordinated by the IIR Science and Technology Council, Commission B2 focuses on promoting knowledge of refrigerating equipment technologies and their applications worldwide.

• Publication date : 2015/05/15

New IIR Working Groups focus on core matters in refrigeration

IIR Working Groups (WGs) operate on a temporary basis and bring together specialists to work on projects concerning current technological, social or economic issues linked to refrigeration. Their aim is to promote development, provide knowledge...

• Publication date : 2018/10/02

Energy efficiency on the agenda for discussion during Montreal Protocol meetings in Vienna

Focus on the fruitful workshop on "the energy efficiency opportunities while phasing down hydrofluorocarbons (HFCs)", which preceded the 40th meeting of the Open-ended Working Group (OEWG40) of the Parties to the Montreal Protocol on Substances...

• Publication date : 2018/08/08

ICR2015: A stimulating environment for dynamic exchanges

With a focus on improving standards and the quality of life of many worldwide, as well as emphasising the importance of preserving the earth through the advancement of refrigeration applications and technology, ICR2015 is expected to attract a...

• Publication date : 2015/04/08

IIR Working Group publishes Guidelines for Life Cycle Climate Performance

The Guidelines for Life Cycle Climate Performance (LCCP) provide a harmonised method to calculate the LCCP for all types of stationary air conditioning, heat pumping and refrigeration systems.

• Publication date : 2016/01/27

Activities of IIR’s Commission B2 on “Refrigerating Equipment”

Focus on the IIR's Commission B2

• Publication date : 2017/07/11

Two IIR Informatory Notes on hot topics

The IIR has recently published two Informatory Notes on high-stakes subjects: flammable refrigerants and the Internet of Things and Artificial Intelligence in refrigeration and air...

• Publication date : 2023/09/22
• Subjects: Technology, HFCs alternatives

The essential role of refrigeration in the combat against COVID-19

Statement of the International Institute of Refrigeration calling governments to consider refrigeration-related services as “essential services” in the context of the current health crisis due to COVID-19.

• Publication date : 2020/04/14
• Subjects: Figures, economy, Developing country, General information, Regulation, Environment, Technology

Refrigeration Safety Working Group Congress meeting

Refrigeration Safety Working Group Congress meeting ICR 2019 offers opportunities for industry experts to meet and discuss improvements in refrigeration safety. With the upcoming...

• Publication date : 2019/08/07

Review of F-gas regulation - IIR contribution

The IIR has responded to the European Commission consultation “Fluorinated greenhouse gases – review of EU rules (2015-20)” which aims to collect opinions and suggestions about the update of the F-gas Regulation...

• Publication date : 2020/09/06
• Subjects: Regulation, Environment, HFCs alternatives

Hydrocarbon refrigerants

Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...

• Last update : 2022/06/22
• Langues : English, French
• Themes : Hydrocarbons, Containment, refrigerant charge reduction

Additive manufacturing of heat exchangers

In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...

• Last update : 2022/09/07
• Langues : English, French
• Themes : Evaporators, condensers and other heat exchangers