1、3 Vapor refrigeration cycles3.1 One-stage vapor compression systems3.2 Two-stage vapor compression systems3.3 Cascade vapor compression systems3.4 Vapor absorption systems 第三章 蒸汽制冷循环第一节 单级蒸气压缩制冷循环第二节 两级蒸气压缩制冷循环第三节 复叠式制冷循环第四节 蒸气吸收制冷循环3.4 Vapor absorption systems 3.4.1 One-effect vapor absorption syst
2、ems 3.4.2 Two-effect vapor absorption systems 3.4.3 Multi-effect vapor absorption systems3.4.4 Vapor absorption systems driven by fuel3.4.5 Two-stage vapor absorption systems3.4.6 Diffusion vapor absorption systems第四节第四节 蒸气吸收制冷循环蒸气吸收制冷循环一、蒸汽单效吸收制冷循环二、蒸汽双效吸收制冷循环三、蒸汽多效吸收制冷循环四、直燃式吸收制冷循环五、两级吸收制冷循环六、扩散吸收
3、制冷循环2/28/202333.4 Vapor absorption systems 第四节 蒸汽吸收制冷循环 3.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环CompressorHeatCompressor2/28/202343.4 Vapor absorption systems 第四节 蒸汽吸收制冷循环 3.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环Bb2Bd2x2TBb1Bd1x12/28/202353.4 Vapor absorption systems 第四节
4、蒸汽吸收制冷循环 3.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 1.Superheated region 2.Subcooled region 3.Two-phase region2/28/202363.4 Vapor absorption systems 第四节 蒸汽吸收制冷循环 3.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.Two-phase region2/28/202373.4 Vapor absorption systems 第四节 蒸汽吸收制冷循环 3
5、.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环TLTHTHHRefrigeratorTHTHHTLCOP=TL/(TH-TL)(THH-TH)/THH 2/28/202383.4 Vapor absorption systems 第四节 蒸汽吸收制冷循环 3.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环2/28/202393.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环3.4.1.1 Cycle flowcharts
6、（一）循环流程 1.Heating vapor loops 2.Cooling water loops 3.Cooled water loops 4.Absorbent loops 5.Refrigerant loops2/28/2023103.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.1.2 Refrigerant loops（二）制冷剂回路1.Compressing:1-32.Condensing:3-3”-33.Throttling:3-0(1+1)4.Evaporating:4-11 3 0 TH TL T s 1
7、 3 3”2/28/2023113.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.1.3 Absorbent loops（三）吸收剂回路 1 2 7 5 4 6 8 9 9 pa pg p0 pk 3 3 4 5 1 h a r 3”1.Pressurizing and heating:2-72.Heating and generating:7-5-43.Cooling:4-84.Mixing:2/8-95.Absorbing:9-9-21 3 0 TH TL T s 1 3 3”2/28/2023123.4.1 One-ef
8、fect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1 tw2、t2、t4、t8 Design parameters:2/28/2023133.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算ParameterExpressionst0、p0t0
9、=tc2 t0，t0=24，p0=ps(t0)tk，pktk=tw2+tk，tk=35，pk=ps(tk)t2，pat2=tw1+t2，t2=35，pa=p0pa，pa1mmHg (133.3Pa)t4，pgt4=th t4，t4=1040，pg=pkt8t8=t2+t8，t8=1525（wrwa）Pk、t4 and Pa、t2tw1，tw2tw1=tw+tw1；tw2=tw+tw2，tw1:tw21.3:1 1 2 7 5 4 6 8 9 9 pa pg p0 pk 3 3 4 5 1 h a r 3”2/28/2023143.4.1 One-effect vapor absorption
10、systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算)()(1(2784hhahha 2847)(1hhhaah 29312.142.17312)12.14(2792.171)1(829afhahfhaa%5.6112.142.1764)12.14(5.592.171)1(9afwawfwaraa 2.145.596464arrwwwa and Point 7(circulating ratio 1)rw)1(fa and Point 9(circulating ratio 2)1 2 7 5 4 6 8 9 9 pa pg
11、 p0 pk 3 3 4 5 1 h a r 3”2/28/2023153.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算Equipment heat duty 1 2 7 5 4 6 8 9 9 pa pg p0 pk 3 3 4 5 1 h a r 3”Equipment Unit heat duty Total heat duty 1Evaporatorq0=h1-h3Q0=qm q02Condenserqk=h3-h3Qk=qm qk3Absorb
12、er q=(-1)h8+h1-h2Q=qm q4Generator qg=(-1)h4+h3 h7Qg=qm qg5Heat exchanger qt=(h7-h2)Qt=qm qt2/28/2023163.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023173.4.1 One
13、-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023183.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、
14、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023193.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023203.4.1 One-effect vapor absorption systems
15、一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023213.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算名 称状态点温度/压力/kPa质量分数/%比焓值/kJ.kg-1蒸发器中冷剂水150.870440蒸发器中冷剂蒸汽1
16、50.8702929吸收器出口稀溶液2420.859.5279冷凝器中冷剂水3459.60607冷凝器中冷剂蒸汽3969.603098发生器出口浓溶液41019.664391发生器中开始沸腾溶液590.99.659.5372吸收器进口浓溶液6510.864301溶液热交换器出口稀溶液782.9-59.5353溶液热交换器出口浓溶液857-64312吸收器中喷淋溶液948.5-61.5293User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:例例3-5表表3-122/28/20232
17、23.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023233.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:
18、THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023243.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023253.4.1 One-effect vapor absorptio
19、n systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023263.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环 3.4.2.4 Thermodynamic calculation（四）热力计算User specified:THH、TH、TL、Q0Designer chosen:tk、t0、tw1、tw2 t2、t4、t8Design parameters:2/28/2023273.4.1 One-effect vapor absorption systems 一、蒸汽单效吸收制冷循环3.4.1.1 Cycle flowcharts（一）循环流程 1.Heating vapor loops 2.Cooling water loops 3.Cooled water loops 4.Absorbent loops 5.Refrigerant loops
