Re-cooling device for a refrigeration system, a refrigeration system equipped therewith, and a method for controlling a re-cooling device

Abstract

A re-cooling device for a refrigeration system, preferably for an industrial process or an industrial machine, comprising a cooling water circuit (12) connected or to be connected to a heat exchanger (3) of a compression refrigeration machine (chiller) (1) and/or a free-cooling heat exchanger (5a), a first re-cooling module (4a), which is connected to the cooling water circuit (12) and is preferably arranged or to be arranged outside a building envelope in order to be able to dissipate heat to the environment, a second re-cooling module (6), which is preferably arranged or to be arranged inside a building envelope in order to be able to dissipate heat to the interior of the building, the second re-cooling module (6) being connected to the cooling water circuit (12) via a changeover valve (7) in such a way that a cooling medium can flow through it selectively, and a control system which is designed to open and close the changeover valve (7) of the second re-cooling module (6) as a function of a predetermined outside temperature and/or a predetermined time of year to provide heating support for the interior of the building and raise an efficiency ratio.

1 . A re-cooling device for a refrigeration system, preferably for an industrial process or an industrial machine, the re-cooling device comprising:
 a cooling water circuit connected or configured to be connected to at least one of a heat exchanger of a compression refrigeration machine or a free-cooling heat exchanger;   a first re-cooling module, wherein the first re-cooling module is connected to the cooling water circuit;   a second re-cooling module, wherein the second re-cooling module is connected to the cooling water circuit via a changeover valve in such a way that a cooling medium can flow through it selectively; and   a control system configured to open and close the changeover valve of the second re-cooling module as a function of at least one of a predetermined outside temperature or a predetermined time of year.   
     
     
         2 . The re-cooling device according to  claim 1 , wherein the first re-cooling module and the second re-cooling module are connected in parallel with respect to the cooling water circuit. 
     
     
         3 . The re-cooling device according to  claim 1 , wherein the first re-cooling module and the second re-cooling module are connected in series with respect to the cooling water circuit. 
     
     
         4 . The re-cooling device according to  claim 3 , wherein the second re-cooling module is arranged in the cooling water circuit upstream of the first re-cooling module. 
     
     
         5 . The re-cooling device according to  claim 1 , further comprising:
 a third re-cooling module connected via a changeover valve to a return of a cold water circuit, wherein the cold water circuit is connected or configured to be connected to a heat exchanger of the compression refrigeration machine, such that a cooling medium can selectively flow through it.   
     
     
         6 . A re-cooling device for a refrigeration system, the re-cooling device comprising:
 a cooling water circuit, wherein the cooling water circuit is connected or configured to be connected to at least one of a heat exchanger of a compression refrigeration machine a free-cooling heat exchanger;   a first re-cooling module, wherein the first re-cooling module is connected to the cooling water circuit;   a second re-cooling module, wherein the second re-cooling module is connected via a changeover valve to a return of a cold water circuit, wherein the cold water circuit is connected or configured to be connected to the heat exchanger of the compression refrigeration machine in such a way that a cooling medium can flow through it selectively; and   a control system configured to open and close the changeover valve of the second re-cooling module as a function of at least one of a predetermined outside temperature or a predetermined season.   
     
     
         7 . The re-cooling device according to  claim 6 , wherein the changeover valve is configured such that it can be opened and closed in several stages. 
     
     
         8 . The re-cooling device according to  claim 6 , wherein the re-cooling modules each have a fan. 
     
     
         9 . (canceled) 
     
     
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         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . (canceled) 
     
     
         18 . The re-cooling device according to  claim 1 , wherein the first re-cooling module is arranged or configured to be arranged outside a building envelope in order to be able to dissipate heat to an environment. 
     
     
         19 . The re-cooling device according to  claim 6 , wherein the first re-cooling module is arranged or configured to be arranged outside a building envelope in order to be able to dissipate heat to an environment. 
     
     
         20 . The re-cooling device according to  claim 1 , wherein the second re-cooling module is arranged or configured to be arranged inside a building envelope in order to dissipate heat to an interior of a building. 
     
     
         21 . The re-cooling device according to  claim 6 , wherein the second re-cooling module is arranged or configured to be arranged inside a building envelope in order to dissipate heat to an interior of a building. 
     
     
         22 . The re-cooling device according to  claim 1 , wherein the changeover valve is configured such that it can be opened and closed in several stages. 
     
     
         23 . The re-cooling device according to  claim 1 , wherein the re-cooling modules each have a fan. 
     
     
         24 . A refrigeration system, the refrigeration system comprising:
 a compression refrigeration machine, the compression refrigeration machine including at least one of a single-stage or two-stage compression refrigeration machine; and   a re-cooling device, wherein the re-cooling device comprises:
 a cooling water circuit connected or configured to be connected to at least one of a heat exchanger of the compression refrigeration machine or a free-cooling heat exchanger; 
 a first re-cooling module, wherein the first re-cooling module is connected to the cooling water circuit; 
 a second re-cooling module, wherein the second re-cooling module is connected to the cooling water circuit via a changeover valve in such a way that a cooling medium can flow through it selectively; and 
 a control system configured to open and close the changeover valve of the second re-cooling module as a function of at least one of a predetermined outside temperature or a predetermined time of year.