High-temperature heat pump and method of using working medium in a high-temperature heat pump

Abstract

A fluid circuit in a high-temperature heat pump absorbs thermal energy through the fluid from at least a first reservoir while performing technical work and outputs thermal energy through the fluid to at least a second reservoir, thereby heating the at least one second reservoir. The working medium may be hydrofluoroether or fluoroketone.

1 - 13 . (canceled) 
     
     
         14 . A high-temperature heat pump coupled to at least one first reservoir and at least one second reservoir, comprising:
 a fluid circuit taking up thermal energy, through a fluid working medium of hydrofluoroether or fluoroketone, from the at least one first reservoir while performing technical work and emitting thermal energy through the fluid to the at least one second reservoir, thereby heating the at least one second reservoir.   
     
     
         15 . The high-temperature heat pump as claimed in  claim 14 , wherein said fluid circuit includes at least one evaporator, at least one compressor, at least one condenser and/or at least one throttle. 
     
     
         16 . The high-temperature heat pump as claimed in  claim 15 , wherein said fluid circuit includes a two-stage compressor. 
     
     
         17 . The high-temperature heat pump as claimed in  claim 16 , wherein said fluid circuit includes an economizer. 
     
     
         18 . The high-temperature heat pump as claimed in  claim 17 , wherein the fluid circuit is closed or completed. 
     
     
         19 . The high-temperature heat pump as claimed in  claim 18 , wherein the fluid working medium is a hydrofluoroether having the chemical formula CxFy-O—CmHn, where x is 3, y is 7, m is 1 and n is 3, or x is 4, y is 9, m is 1 and n is 3, or x is 4, y is 9, m is 2 and n is 5, or x is 6, y is 13, m is 1 and n is 3 
     
     
         20 . The high-temperature heat pump as claimed in  claim 18 , wherein the fluid working medium is a hydrofluoroether having the chemical formula C3F7CF(OC2H5)CF(CF3)2, or in that the hydrofluoroether is a hydrofluoroether having the chemical formula CH3CHO(CF2CFHCF3)2, or in that the fluoroketone is a fluoroketone having the chemical formula CF3CF2C(O)CF(CF3)2. 
     
     
         21 . A method of using a working medium in a high-temperature heat pump coupled to at least one first reservoir and at least one second reservoir, comprising:
 circulating a working medium of hydrofluoroether or fluoroketone through a fluid circuit, absorbing thermal energy from the at least one first reservoir while performing technical work and emitting thermal energy to the at least one second reservoir, thereby heating the at least one second reservoir.   
     
     
         22 . The method as claimed in  claim 21 , further comprising at least one of compressing the working medium in a predetermined range of condensation temperature of the working medium, and utilizing the thermal energy in producing steam, prior to emitting the thermal energy to the at least one second reservoir. 
     
     
         23 . The method as claimed in  claim 22 , wherein the thermal energy is emitted to the at least one second reservoir, which is at a temperature of greater than 70° C. 
     
     
         24 . The method as claimed in  claim 23 , wherein the high-temperature heat pump is operated in transcritical form to achieve temperatures at a low pressure. 
     
     
         25 . The method as claimed in  claim 24 , wherein the working medium is compressed in two stages. 
     
     
         26 . The method as claimed in  claim 25 , wherein the working medium is superheated and in each of the two stages, compression is completed entirely upstream of a wet-steam zone of a high-temperature heat exchanger. 
     
     
         27 . The method as claimed in  claim 26 ,
 wherein an economizer superheats the working medium, and   wherein said method further comprises transferring heat from the high-pressure heat exchanger to an outlet of the working medium at the evaporator.