Heat pump - Wikipedia
REHVA Journal 02/2013 - Hybrid heat pumps - saving energy and reducing carbon emissions
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FSEC-PF-413-04
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Heat pump - Wikipedia
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Delta T – The air-side temperature difference | STULZ
REHVA Journal 02/2013 - Hybrid heat pumps - saving energy and reducing carbon emissions
Air Cycle Heat Pumps | SpringerLink
Heat Pumps - Integrating Technologies to Decarbonise Heating and Cool…
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