Heat pump arrangement and method for operating heat pump arrangement

Abstract

A heat pump arrangement including a first heat pump through which a first fluid flows, a second heat pump through which a second fluid flows, and a heat exchanger to transfer heat from the first fluid to the second fluid. The heat is transferred from the first fluid to the second fluid at a fluid temperature of at least 120° C. for the second fluid. The first fluid and the second fluid each have a volumetric heating capacity of at least 500 kJ/m3 when the heat is transferred from the first fluid to the second fluid. Useful heat is extracted from the second fluid at a fluid temperature of at least 120° C. for the second fluid, and the first fluid and the second fluid each have a volumetric heating capacity of at least 500 kJ/m 3 when the useful heat is extracted.

1 - 10 . (canceled) 
     
     
         11 . A method for operating a heat pump system in which a first fluid flows through a first heat pump, a second fluid flows through a second heat pump, and heat is transferred from the first fluid to the second fluid using a heat exchanger, the method comprising:
 extracting useful heat from the second fluid at a fluid temperature of at least 120° C. for the second fluid, the first fluid and the second fluid each having a volumetric heating capacity of at least 500 kJ/m 3  when the useful heat is extracted.   
     
     
         12 . The method as claimed in  claim 11 , wherein the useful heat is extracted from the second fluid at a fluid temperature of at least 150° C. 
     
     
         13 . The method as claimed in  claim 12 , wherein the useful heat is extracted from the second fluid at a fluid temperature of at least 160° C. 
     
     
         14 . The method as claimed in  claim 11 , wherein the first fluid is a fluoroketone. 
     
     
         15 . The method as claimed in  claim 11 , wherein the second fluid is one of water and a fluoroketone. 
     
     
         16 . The method as claimed in  claim 11 , wherein the first fluid and the second fluid are different fluids. 
     
     
         17 . The method as claimed in  claim 11 , wherein the heat is transferred from the first fluid to the second fluid isothermally. 
     
     
         18 . The method as claimed in  claim 11 , wherein the first fluid and the second fluid each have a volumetric heating capacity of at least 1000 kJ/m 3  when the useful heat is extracted from the second fluid. 
     
     
         19 . The method as claimed in  claim 11 , wherein the first fluid and the second fluid each have a volumetric heating capacity of at least 1200 kJ/m 3  when the useful heat is extracted from the second fluid. 
     
     
         20 . The method as claimed in  claim 11 , wherein the first fluid and the second fluid each have a volumetric heating capacity of at least 1500 kJ/m 3  when the useful heat is extracted from the second fluid. 
     
     
         21 . A heat pump system, comprising:
 a first heat pump through which a first fluid flows;   a second heat pump through which a second fluid flows; and   a heat exchanger configured to transfer heat from the first fluid to the second fluid, the heat being transferred from the first fluid to the second fluid at a fluid temperature of at least 120° C. for the second fluid, the first fluid and the second fluid each having a volumetric heating capacity of at least 500 kJ/m 3  when the heat is transferred from the first fluid to the second fluid.   
     
     
         22 . The heat pump system as claimed in  claim 21 , wherein at least one temperature rise of the first fluid and the second fluid is increased by two-stage compression. 
     
     
         23 . A heat pump system as claimed in  claim 21 , wherein the second fluid is isothermally compressible using a liquid ring compressor.