Working fluids for thermal energy conversion of waste heat form fuel cells using rankine cycle systems
申请人:Honeywell International Inc.
公开号:EP2063073A3
公开(公告)日:2013-12-18
A process for recovering waste heat which comprises (a) passing a liquid phase working fluid through a heat exchanger in communication with a process which produces the waste heat; (b) removing a vapour phase working fluid from the heat exchanger; (c) passing the vapour phase working fluid to an expander, wherein the waste heat is converted into mechanical energy; and (d) passing the vapour phase working fluid from the expander to a condenser, wherein the vapour phase working fluid is condensed to the liquid phase working fluid. The preferred working fluid is an organic Rankine cycle system working fluid comprising one or more compounds selected from the group consisting of 1,1,1,2,2,4,4,4-octafluorobutane, 2-trifluoromethyl-1,1,1,3,3-pentafluoropropane, 1,1,1,2,2,3,3,4-octaflourobutane, 1,1,1,2,2,3,3,4,4-nonafluorobutane, trifluoromethyl-1,1,1,2,2,-pentaflouropropyl ether or 3-trifluoromethoxy - 1,1,1,2,2-pentafluoropropane, 1,1,1-trifluoroethyl perfluoroethyl ether or 2-perfluoroethyl-1,1,1-trifluoroethane, 2-trifluoromethyl-1,1,1,3,3,3-hexafluoropropane or 2-H perfluoroisobutane, methyl (1,1,1,2,3,3,3-heptafluoropropane)-2-ether or 2-methoxy perfluoropropane, methyl 1,1,1,2,2,3,3-heptafluoropropane ether or 3-methoxyperfluoropropane, 1,2,2,2-Tetrafluoroethyl-1,1,1,2,2,3,3-heptafluoropropane ether or 2-perfluoropoxy-1,1,1,2-tetrafluoroethane, perfluoro-tertiary butyl alcohol, 1,1,2,2,3,3,4,4-octafluorobutane, 1,1,1,2,2,3,3,4,4,5,5-undecafluoropentane, 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 4-trifluoromethyl-1,1,1,3,5,5,5-heptafluoro-2-pentene, cyclo-1,1,2,2,3,4,-hexafluorobutane, cyclo-1,1,2,2,3,3,4,4,5,5-decafluoropentane, and H-dodecafluoropentane isomers.
一种回收废热的工艺,包括(a)将液相工作流体通过一个与产生废热的工艺相通的热交换器;(b)从热交换器中取出气相工作流体;(c)将气相工作流体通向一个膨胀机,其中废热被转化为机械能;以及(d)将气相工作流体从膨胀机通向一个冷凝器,其中气相工作流体被冷凝为液相工作流体。优选的工作流体是一种有机朗肯循环系统工作流体,包括选自以下组别的一种或多种化合物:1,1,1,2,2,4,4,4-八氟丁烷、2-三氟甲基-1,1,1,3,3-五氟丙烷、1,1,1,2,2,3,3,4-八氟丁烷、1,1,1,2,2,3,3,4、4-九氟丁烷、三氟甲基-1,1,1,2,2,-五氟丙基醚或 3-三氟甲氧基-1,1,1,2,2-五氟丙烷、1,1、1,1,1-三氟乙基全氟乙基醚或 2-全氟乙基-1,1,1-三氟乙烷、2-三氟甲基-1,1,1,3,3,3-六氟丙烷或 2-H-全氟异丁烷、甲基(1、1,1,1,2,3,3,3-七氟丙烷)-2-醚或 2-甲氧基全氟丙烷、甲基 1,1,1,2,2,3,3-七氟丙烷醚或 3-甲氧基全氟丙烷、1,2,2,2-四氟乙基-1,1,1,2,2,3,3-七氟丙烷醚或 2-全氟氧基-1,1,1,2-四氟乙烷,全氟叔丁醇、5,5,5-七氟-2-戊烯、环-1,1,2,2,3,4,-六氟丁烷、环-1,1,2,2,3,3,4,4,5,5-十氟戊烷和 H-十二氟戊烷异构体。