Cooling device for a condenser of a system for a thermodynamic cycle, system for a thermodynamic cycle, arrangement with an internal combustion engine and a system, vehicle, and a method for carrying out a thermodynamic cycle

Abstract

A cooling device for a condenser of a system for a thermodynamic cycle, with a coolant circuit, wherein a conveying device for conveying a coolant through the coolant circuit is provided, and wherein the coolant circuit includes a cold branch downstream from a cooling point for the coolant and a hot branch upstream of the cooling point. The conveying device has a variable output, and/or the coolant circuit has a connecting line between the hot branch and the cold branch. A mixing device is provided, by way of which a variable portion of coolant can be supplied from the hot branch to the cold branch via the connecting line, bypassing the cooling point.

We claim: 
     
         1 . A cooling device for a condenser of a system for a thermodynamic cycle, comprising: a coolant circuit; a conveying device for conveying a coolant through the coolant circuit, wherein the coolant circuit comprises a cold branch downstream from a cooling point for the coolant and a hot branch upstream of the cooling point, wherein the conveying device has a variable output, and/or the coolant circuit comprises a connecting line between the hot branch and the cold branch; and a mixing device provided so that a variable portion of coolant from the hot branch is sendable to the cold branch via the connecting line, bypassing the cooling point. 
     
     
         2 . The cooling device according to  claim 1 , wherein the conveying device is configured as an automatically controllable conveying device. 
     
     
         3 . The cooling device according to  claim 1 , and further comprising a recooling device set up to cool the coolant in the coolant circuit, wherein the connecting line branches off from the hot branch upstream of the recooling device, wherein the connecting line leads to the cold branch downstream from the recooling device. 
     
     
         4 . The cooling device according to  claim 1 , wherein the connecting line leads to the cold branch upstream of the conveying device. 
     
     
         5 . The cooling device according to  claim 1 , wherein the mixing device is a three-way mixer, wherein the cold branch passes through a first and a second connector of the three-way mixer, and wherein the connecting line leads to a third connector of the three-way mixer. 
     
     
         6 . The cooling device according to  claim 1 , further comprising a control unit operative to produce a presettable absolute or relative temperature level in the condenser of the system for a thermodynamic cycle by actuation of the conveying device and/or of the mixing device. 
     
     
         7 . The cooling device according to  claim 6 , wherein the control unit is operative to optimize a power yield of the system for a thermodynamic cycle by actuation of the conveying device and/or by actuation of the mixing device. 
     
     
         8 . A system for a thermodynamic cycle, comprising a cooling device according to  claim 1 . 
     
     
         9 . The system according to  claim 8 , wherein the system is configured to use waste heat of an internal combustion engine. 
     
     
         10 . An arrangement, comprising: an internal combustion engine; and the system according to  claim 8 . 
     
     
         11 . A motor-driven vehicle comprising the arrangement according to  claim 10 . 
     
     
         12 . The motor-driven vehicle according to  claim 11 , wherein the motor-driven vehicle is a water craft. 
     
     
         13 . The motor-driven vehicle according to  claim 12 , wherein the water craft is a ship. 
     
     
         14 . A method for carrying out a thermodynamic cycle, for operating a system having an evaporator, an expansion device, a condenser, and a cooling device according to  claim 1 , the method comprising the step of adjusting cooling capacity of the condenser by actuation of a variable-output conveying device of the cooling device and/or by actuation of a mixing device for supplying a variable portion of coolant from a hot branch of the cooling device to a cold branch of the cooling device via a connecting line. 
     
     
         15 . The method according to  claim 14 , including controlling an output of the conveying device and/or a functional setting of the mixing device. 
     
     
         16 . The method according to  claim 14 , including controlling cooling capacity to provide an optimal power yield of the system or to produce a presettable absolute or relative temperature level in the condenser.