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4.2.1 Isentropic and volumetric efficiency.................................................................................................................24 4.2.2 Variable vs. fixed displacement .........................................................................................................................25 4.3 Air conditioning cycle ......................................................................................................... 28 4.4 Heat pump cycle.................................................................................................................. 31 4.4.1 Cycle analysis ........................................................................................................................................................31 4.4.2 Supplementary heating options..........................................................................................................................33 4.5 Comparison of heat exchanger sizes required for heating and cooling..............................34 4.5.1 Indoor coil sizing ..................................................................................................................................................34 4.5.2 Outdoor coil sizing ...............................................................................................................................................38 4.6 Real cycle conclusions ....................................................................................................... 41 Chapter 5: Seasonal Efficiency...........................................................................................43 5.1 Annual loads ....................................................................................................................... 43 5.2 Cycle assumptions.............................................................................................................. 44 5.3 Results................................................................................................................................45 Bibliography .............................................................................................................................. 48 AppendixA: SystemConfiguration...................................................................................50 A.1 R410A A/C & H/P System....................................................................................................50 A.1.1 R410A system instrumentation .........................................................................................................................50 A.1.2 Indoor Coil...........................................................................................................................................................51 A.1.3 Outdoor Coil.........................................................................................................................................................51 A.1.4 Filter Dryer............................................................................................................................................................52 A.1.5 Mass Flow Meter .................................................................................................................................................52 A.1.6 Compressor...........................................................................................................................................................52 A.1.7 Expansion Valve ..................................................................................................................................................52 A.1.8 Line Sets ................................................................................................................................................................52 A.1.9 Sight Glasses.........................................................................................................................................................52 A.1.10 Charging Conditions.........................................................................................................................................52 vPDF Image | Comparison of R744 and R410A
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