System and method for operating a vapor-ejector heat pump

Abstract

A heat pump provided with at least one evaporator and at least one condenser, wherein at least one vapor boiler is provided and at least two ejectors are provided which are connected to the at least one vapor boiler, wherein either for each of two ejectors a separate evaporator is provided or for each of two ejectors a separate condenser is provided or for each of two ejectors both a separate evaporator and a separate condenser are provided. The invention further relates to a heat pump provided with at least one evaporator and at least one condenser, wherein at least one vapor boiler is provided, of which a vapor outlet is connected to at least one ejector, wherein a working fluid pump is provided for pumping working fluid from the condenser to the vapor boiler, wherein the working fluid pump is driven using high pressure gas. Further, the invention relates to a method for pumping heat in a heat pump, wherein use is made of an apparatus according to the invention.

1 . A heat pump provided with at least one evaporator and at least one condenser, wherein at least one vapor boiler is provided and at least two ejectors are provided which are connected to the at least one vapor boiler, wherein either for each of two ejectors a separate evaporator is provided or for each of two ejectors a separate condenser is provided or for each of two ejectors both a separate evaporator and a separate condenser are provided.  
   
   
       2 . A heat pump according to  claim 1 , provided with at least two evaporators, wherein the evaporators are arranged in series in a current of fluid from which heat is extracted.  
   
   
       3 . A heat pump according to  claim 1 , provided with at least two condensers, wherein the condensers are arranged in series in a current of fluid to which heat is supplied.  
   
   
       4 . A heat pump according to claims  1 , provided with at least one evaporator and at least one condenser, wherein at least one vapor boiler is provided, of which a vapor outlet is connected to at least one ejector, wherein a working fluid pump is provided for pumping working fluid from the condenser to the vapor boiler, wherein the working fluid pump is driven using high pressure gas.  
   
   
       5 . A heat pump according to  claim 4 , wherein the pump is provided with a turbine through which the high pressure gas is guided, wherein the turbine forms the drive of the working fluid pump.  
   
   
       6 . A heat pump according to  claim 4 , wherein the high pressure gas is high pressure vapor coming from the vapor boiler.  
   
   
       7 . A heat pump according to  claim 4 , wherein the working fluid pump is constructed as a double plunger pump of which the at least one plunger has a first end received in a drive cylinder chamber, which drive cylinder chamber is connected via control values to the high pressure gas source, while a second end of the at least one plunger is received in a pressure cylinder chamber, which pressure cylinder chamber is provided with an inlet which is connected via a non-return valve to a return line coming from the at least one condenser, the pressure cylinder chamber being provided with an outlet which is connected via a non-return valve to a supply line which is connected to the vapor boiler.  
   
   
       8 . A method for pumping heat in a heat pump, wherein use is made of an apparatus according to  claim 1 .  
   
   
       9 . A method according to  claim 8 , wherein the temperature difference which is to be bridged per ejector is kept low by connecting several ejectors in parallel and by at least either providing a separate evaporator for each of the two parallel ejectors or providing a separate condenser for each of the two parallel ejectors or providing both a separate evaporator and a separate condenser for each of the two parallel ejectors.  
   
   
       10 . A method according to  claim 8 , wherein the heat pump is provided with a working fluid pump for filling the vapor boiler with working fluid which originates from a said condenser, wherein the working fluid pump is driven with high pressure gas.  
   
   
       11 . A method according to  claim 10 , wherein the high pressure gas is formed by vapor originating from the vapor boiler.  
   
   
       12 . A heat pump according to  claim 2 , provided with at least two condensers, wherein the condensers are arranged in series in a current of fluid to which heat is supplied.  
   
   
       13 . A heat pump provided with at least one evaporator and at least one condenser, wherein at least one vapor boiler is provided, of which a vapor outlet is connected to at least one ejector, wherein a working fluid pump is provided for pumping working fluid from the condenser to the vapor boiler, wherein the working fluid pump is driven using high pressure gas.  
   
   
       14 . A heat pump according to  claim 13 , wherein the pump is provided with a turbine through which the high pressure gas is guided, wherein the turbine forms the drive of the working fluid pump.  
   
   
       15 . A heat pump according to  claim 14 , wherein the high pressure gas is high pressure vapor coming from the vapor boiler.  
   
   
       16 . A heat pump according to  claim 15 , wherein the working fluid pump is constructed as a double plunger pump of which the at least one plunger has a first end received in a drive cylinder chamber, which drive cylinder chamber is connected via control values to the high pressure gas source, while a second end of the at least one plunger is received in a pressure cylinder chamber, which pressure cylinder chamber is provided with an inlet which is connected via a non-return valve to a return line coming from the at least one condenser, the pressure cylinder chamber being provided with an outlet which is connected via a non-return valve to a supply line which is connected to the vapor boiler.  
   
   
       17 . A method for pumping heat in a heat pump, wherein use is made of an apparatus according to  claim 4 .  
   
   
       18 . A method for pumping heat in a heat pump, wherein use is made of an apparatus according to  claim 16 .  
   
   
       19 . A method according to  claim 17 , wherein the heat pump is provided with a working fluid pump for filling the vapor boiler with working fluid which originates from a said condenser, wherein the working fluid pump is driven with high pressure gas.  
   
   
       20 . A method according to  claim 18 , wherein the heat pump is provided with a working fluid pump for filling the vapor boiler with working fluid which originates from a said condenser, wherein the working fluid pump is driven with high pressure gas.  
   
   
       21 . A method according to  claim 19 , wherein the high pressure gas is formed by vapor originating from the vapor boiler.  
   
   
       22 . A method according to  claim 20 , wherein the high pressure gas is formed by vapor originating from the vapor boiler.