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LCOMPR ssCOMPR,outTRds (7) CO MP R, in Figure 3 illustrates the irreversible loss caused by pressure drop in a T-s diagram. The solid lines denote an actual cycle and the dashed lines denote an ideal cycle without pressure drop. The irreversible losses caused by pressure drop are expressed as hatched areas edged by the solid and dashed lines. 3. THERMODAINAMIC ANALYSIS METHOD 3.1 Calculation condition of thermodynamic analysis Table 4 lists the analysis conditions at heating mode 1 and heating mode 2 that is the same as experimental condition. Efficiency of compressor is 1.0 to calculate ideal cycle. Calculated refrigerants are the same as experimental test refrigerants in table 3. 3.2 Calculation method of thermodynamic analysis The calculations of type A and Type B are carried out. As shown in Figure 4(a), the calculation of type A is that 2205, Page 4 Figure 2: Irreversible loss in each element Figure 3: Irreversible loss by pressure drop Heat source temperature [K] Heat sink temperature [K] Degree of superheat [K] Heat transfer rate [kW] (Heating/cooling heat load) Efficiency of Compressor [-] Table 4: Analysis conditions Heating mode 1 Heating mode 2 288.15→ 282.15 (ΔT = 9 K) 293.15→303.15 (ΔT = 10 K) 293.15→318.15 (ΔT = 25 K) 3 2.2 1.0 (a) type A (temp. glide is smaller) (b) type B (temp. glide is larger) Figure 4: Calculation method of thermodynamic analysis International Refrigeration and Air Conditioning Conference at Purdue, July 16-19, 2012PDF Image | Experimental Assessment on Performance of a Heat Pump Cycle
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