New IIR Informatory Note on Air-source heat pumps for space heating and cooling

The IIR has just published a new Informatory Note on Air source heat pumps for space heating and cooling, prepared by Xianting Li and Baolong Wang, respectively President and Secretary of IIR Commission E1 on Air conditioning. 

 

This Informatory Note provides detailed information about the principles and state of the art of air-source heat pump (ASHP) technologies. It also outlines anti-frosting strategies and defrosting methods as well as alternative refrigerants with the lowest environmental impact. Finally, it presents the ASHP applications all over the world and highlights the measures to be taken to accelerate the use of ASHPs in buildings.

 

The note concludes that ASHP is an energy-efficient technology that allows heating at different ambient temperatures. The normal heating efficiency of ASHPs is 3 to 4 times higher than that of direct electric heating. ASHPs can be used in different climates, from -25°C to +50°C, by developing technologies such as variable frequency compressor, cascade ASHP, two-stage compression and quasi two-stage compression. The note stresses that further efforts should be made to raise awareness of the benefits of air-source heat pumps among decision-makers and the public.

 

A summary for policymakers and a Chinese version of this Informatory Note have also been published, in addition to the English and French versions.

 

To download these documents:  https://iifiir.org/en/fridoc/air-source-heat-pumps-for-space-heating-and-cooling-41-lt-sup-gt-st-lt-sup-gt-143232