In the first part of this report, experimental results are presented comparing a prototype R744 system with a commercially available R410A system in heating mode. When the heating capacity of the two systems is matched at the ARI heating capacity rating condition, the heating efficiency of the two systems is comparable. When the cooling capacity of the two systems is matched at the ARI cooling capacity rating condition, the heating efficiency of R744 is lower than R410A.
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In the first part of this report, experimental results are presented comparing a prototype R744 system with a commercially available R410A system in heating mode. When the heating capacity of the two systems is matched at the ARI heating capacity rating condition, the heating efficiency of the two systems is comparable. When the cooling capacity of the two systems is matched at the ARI cooling capacity rating condition, the heating efficiency of R744 is lower than R410A.
In the second part of this report, a theoretical comparison of R744 and R410A is made. The theoretical cycle performance of R410A and R744 is compared on the basis of the comfort of the conditioned space, which is determined by dehumidification in cooling mode and the supply air temperature in heating mode. Cycles are analyzed with both ideal and real compressors, and trade-offs between heat exchanger size and efficiency are presented.
In the second part of this report, a theoretical comparison of R744 and R410A is made. The theoretical cycle performance of R410A and R744 is compared on the basis of the comfort of the conditioned space, which is determined by dehumidification in cooling mode and the supply air temperature in heating mode. Cycles are analyzed with both ideal and real compressors, and trade-offs between heat exchanger size and efficiency are presented.
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By shecco , published Nov 04, 2016 - 0 pages
By shecco , published Nov 04, 2016 - 0 pages