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一1二项目单位代号参数参数压缩机排汽量cm3/rG容压缩机排汽量m3/hG容33.2510.01压缩机排汽量dm3/hG容332005100002蒸发温度℃t03.02.03压缩机吸汽过热度℃txr11.110.04压缩机吸汽温度℃t1=t0+txr14.112.05冷凝温度℃tK50.050.06过冷度℃tL8.35.07冷凝器出口温度℃t3=tK-tL41.745.08制冷量WQY313813960009电机输入功率WPY9318134300三作压焓图四从压焓图查得状态参数1压缩机吸汽焓kJ/kgh1414.5413.22压缩机排汽焓kJ/kgh2448.0447.93冷凝器出口焓kJ/kgh3252.0256.64吸汽比容dm3/kgv145.546.5三计算1压缩机单位制冷量W/kgq0=（h1-h3）/3.645.13943.5002制冷剂质量流量kg/hG质=QY/q0695.29103.43输气系数λ=G质v1/G容0.9530.8304单位理论功W/kgw0=（h2-h1）/3.69.319.645电机理论功率WPL=w0G质6469.387747.16电效率η=PL/PY0.6940.6537输气系数λ=3.6QYv1/(h1-h3)/G容0.9530.830根据压缩机样本计算输气系数λ、电效率η压缩机选型压缩机：谷轮ZR144K3（12HP）全封闭式。工况参数18电效率η=(h2-h1)G容λ/3.6/v1/PY0.6940.653计算蒸发器、冷凝器负荷、电机功率一工况参数项目单位代号参数参数1压缩机排汽量dm3/hG容332005100002蒸发温度℃t0323压缩机吸汽过热度℃txr10104压缩机吸汽温度℃t1=t0+txr13125冷凝温度℃tK50506过冷度℃tL227冷凝器出口温度℃t3=tK-tL48488蒸发器出口过热度℃tzr229蒸发器出口温度℃t0′=t0+tzr54二作压焓图三从压焓图查得状态参数1压缩机吸汽焓kJ/kgh1414.0413.22压缩机排汽焓kJ/kgh2447.1447.93冷凝器出口焓kJ/kgh3260.3260.64蒸发器出口焓kJ/kgh0′408.0408.05吸汽比容dm3/kgv145.446.5四系数、效率1输气系数λ0.9530.8302电效率η0.6940.6533指示效率ηi0.850.85蒸发器冷量损失系数f10.970.994压缩机热量损失系数f20.990.99五计算1压缩机单位制冷量W/kgq1=（h1-h3）/3.642.742.42制冷剂质量流量kg/hG质=G容λ/v1696.79103.423压缩机制冷量WQY=q1G质297473858854蒸发器单位制冷量W/kgq0=（h0′-h3）/3.641.040.95蒸发器制冷量WQ0=q0G质f1283003690086单位理论功W/kgw0=（h2-h1）/3.69.199.647电机理论功率WPL=w0G质6406877478电机实际输出功率WPS=PL/η92271343009压缩机指示功率WPi=PL/ηi753710323210冷凝器热负荷WQk=QY+Pif23728448911711压缩机实际排汽焓值kJ/kgh2′=h1+3.6w0/ηi45345412压缩机实际排汽温度℃t2′818913冷凝器热负荷WQk=(h2′-h1)G质/3.63728448911714制冷性能系数COP=Q0/PS3.072.7515制热性能系数COP=QK/PS4.043.64谷轮144RefcompSRC-S-463W3参数参数参数参数备注184.232.135.828.9935.832100358002899035800样本给出.3.03.03.02.5t水′=12、t水″=711.111.111.110.0样本给出.14.114.114.112.550.050.050.040.0t风′=35、t风″=458.38.38.30.0样本给出.41.741.741.740.034000361003010033100样本给出.99801080089607980样本给出.413.2413.2413.2413.5447.9447.9447.9440.8256.6256.6256.6249.746.546.546.545.943.50043.50043.50045.500781.6829.9692.0727.51.1321.0781.1100.933G质=G容λ/v19.649.649.647.587533.87999.26669.75516.70.7550.7410.7440.6911.1321.0781.1100.933公式简化根据压缩机样本计算输气系数λ、电效率η压缩机选型压缩机：谷轮ZR144K3（12HP）全封闭式。工况参数40.7550.7410.7440.691公式简化参数参数参数参数32100358002899035800样本给出.2222.5t水′=12、t水″=710101010设定12121212.550505040t风′=35、t风″=452225样本给出.484848352222设定4445413.2413.2413.2413.5447.9447.9447.9440.8260.6260.6260.6243.6408.0408.0408.0408.046.546.546.545.91.1321.0781.1100.9330.7550.7410.7440.6910.850.850.850.85设定0.990.990.990.99设定0.990.990.990.99设定42.442.442.447.2781.6829.9692.0727.553313235178293313433340.940.940.945.7316833363928048328899.649.649.647.5875347999667055179980108008960798088639411784764904199544589371784082345445445444689898973查压焓图41995445893717840823第二种计算方法3.173.113.134.124.214.134.155.12大金12HP美优乐12HP美优乐10HP美优乐12HP风冷风冷风冷水冷6一1二项目单位代号参数备注1压缩机排汽量dm3/hG容28800样本给出.2蒸发温度℃t03.0t水′=12、t水″=73压缩机吸汽过热度℃txr11.1样本给出.4压缩机吸汽温度℃t1=t0+txr14.15冷凝温度℃tK50.0t风′=35、t风″=456过冷度℃tL8.3样本给出.7冷凝器出口温度℃t3=tK-tL41.78制冷量WQY27604样本给出.9电机输入功率WPY8272样本给出.三四1压缩机吸汽焓kJ/kgh1414.52压缩机排汽焓kJ/kgh24483冷凝器出口焓kJ/kgh3252.04吸汽比容dm3/kgv145.5三1压缩机单位制冷量W/kgq0=（h1-h3）/3.645.1392制冷剂质量流量kg/hG质=QY/q0611.53输气系数λ=G质v1/G容0.966G质=G容λ/v14单位理论功W/kgw0=（h2-h1）/3.69.315电机理论功率WPL=w0G质5690.76电效率η=PL/PY0.6887输气系数λ=3.6QYv1/(h1-h3)/G容0.966公式简化8电效率η=(h2-h1)G容λ/3.6/v1/PY0.688公式简化计算根据压缩机样本计算输气系数λ、电效率η压缩机选型压缩机：谷轮ZR125K3（10HP）全封闭式。工况参数作压焓图从压焓图查得状态参数一项目单位代号参数1压缩机排汽量dm3/hG容28800样本给出.2蒸发温度℃t03t水′=12、t水″=73压缩机吸汽过热度℃txr10设定4压缩机吸汽温度℃t1=t0+txr135冷凝温度℃tK50t风′=35、t风″=456过冷度℃tL2样本给出.7冷凝器出口温度℃t3=tK-tL488蒸发器出口过热度℃tzr2设定9蒸发器出口温度℃t0′=t0+tzr5二三1压缩机吸汽焓kJ/kgh1414.02压缩机排汽焓kJ/kgh24473冷凝器出口焓kJ/kgh3260.34蒸发器出口焓kJ/kgh0′408.05吸汽比容dm3/kgv145.4四1输气系数λ0.966前面计算得出2电效率η0.688前面计算得出3指示效率ηi0.85设定4蒸发器冷量损失系数f0.99设定五1压缩机单位制冷量W/kgq1=（h1-h3）/3.642.6942制冷剂质量流量kg/hG质=G容λ/v1612.83压缩机制冷量WQY=q1G质261634蒸发器单位制冷量W/kgq0=（h0′-h3）/3.641.0285蒸发器制冷量WQ0=q0G质f24890计算蒸发器、冷凝器负荷、电机功率计算工况参数作压焓图从压焓图查得状态参数系数、效率6单位理论功W/kgw0=（h2-h1）/3.69.197电机理论功率WPL=w0G质56348电机实际输出功率WPS=PL/η81899压缩机指示功率WPi=PL/ηi662910冷凝器热负荷WQk=QY+Pi3279111压缩机实际排汽焓值kJ/kgh2′=h1+3.6w0/ηi45312压缩机实际排汽温度℃t2′81查压焓图13冷凝器热负荷WQk=(h2′-h1)G质/3.632791第二种计算方法一1二项目单位代号参数参数参数备注1压缩机排汽量dm3/hG容126800126800126800样本给出.2蒸发温度℃t0-20.0-10.010.0压缩机吸汽温度℃t120.020.020.0样本给出.压缩机吸汽过热度℃txr=t1-t040.030.010.04冷凝温度℃tK50.050.050.0t风′=35.t风″=455过冷度℃tL000样本给出.7冷凝器出口温度℃t3=tK-tL50.050.050.08制冷量WQY3675058500127000样本给出.9电机输入功率WPY217002640034400样本给出.三四1压缩机吸汽焓kJ/kgh1424.1422.3416.52压缩机排汽焓kJ/kgh24884724443冷凝器出口焓kJ/kgh3263.3263.3263.34吸汽比容dm3/kgv1111.075.136.7三1压缩机单位制冷量W/kgq0=（h1-h3）/3.644.66744.16742.5562制冷剂质量流量kg/hG质=QY/q0822.81324.52984.33输气系数λ=G质v1/G容0.7200.7840.864G质=G容λ/v14单位理论功W/kgw0=（h2-h1）/3.617.7513.897.585电机理论功率WPL=w0G质1460418396226316电效率η=PL/PY0.6730.6970.6587输气系数λ=3.6QYv1/(h1-h3)/G容0.7200.7840.864公式简化8电效率η=(h2-h1)G容λ/3.6/v1/PY0.6730.6970.658公式简化一项目单位代号参数参数1压缩机排汽量dm3/hG容126800126800126800样本给出.2蒸发温度℃t0-20.0-10.010.0压缩机吸汽温度℃t1202020压缩机吸汽过热度℃txr=t1-t040.030.010.05冷凝温度℃tK505050t风′=35.t风″=456过冷度℃tL000样本给出.7冷凝器出口温度℃t3=tK-tL5050508蒸发器出口过热度℃tzr222设定9蒸发器出口温度℃t0′=t0+tzr-18-812二三1压缩机吸汽焓kJ/kgh1424.1422.3416.52压缩机排汽焓kJ/kgh2488472444根据压缩机样本计算输气系数λ、电效率η压缩机选型压缩机：比泽尔6G40.2（40HP）半封闭活塞式。工况参数工况参数作压焓图从压焓图查得状态参数作压焓图从压焓图查得状态参数计算计算蒸发器、冷凝器负荷、电机