Experimental comparison between R409A and R437A performance in a heat pump unit
نویسندگان
چکیده
منابع مشابه
Performance Comparison of Hydronic Secondary Loop Heat Pump and Conventional Air-Source Heat Pump
In residential heat pump systems, the motivation for secondary loop systems is to allow for the use of flammable or toxic refrigerants with lower global warming potentials than the currently employed HFC refrigerants. The addition of radiant panels as integral building components (embedded in concrete at construction or attached to the underside of wood flooring) is becoming more common. Combin...
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the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...
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ژورنال
عنوان ژورنال: Open Engineering
سال: 2017
ISSN: 2391-5439
DOI: 10.1515/eng-2017-0011