Device to create cooling through use of waste heat

Claim 1

Apparatus for cooling an input liquid by waste heat comprising heat exchange means for receiving said waste heat and vaporizing a refrigerant, valve means connected to the heat exchange means, and cooling means for removing heat from an input liquid, said valve means interruptedly circulating said refrigerant from the valve means through a return line to said cooling means and thence back to said valve means, said refrigerant being vaporized in said heat exchange means, interruptedly condensed in said valve means and intermittently discharged into said return line, a portion of said refrigerant in said return line being returned to said heat exchange means, wherein said valve means comprises a steam valve, a Venturi tube, a liquid jet pump, and a check valve, said steam valve being spring loaded for introducing pressurized vaporized refrigerant from said heat exchange means into said Venturi tube, said liquid jet pump being connected to said return line for introducing into said Venturi tube refrigerant returned from said cooling means to said valve means, said check valve connecting said Venturi tube with said return line and permitting said refrigerant to flow only in the direction from said Venturi tube to said return line, said valve means being located at a height above said heat exchange means.

Claim 6

A method of operating apparatus for cooling an input liquid by waste heat comprising heat exchange means for receiving said waste heat and vaporizing a refrigerant, valve means comprising a steam valve, a Venturi tube a liquid jet pump, and a check valve, and cooling means for removing heat from an input liquid, said valve means interruptedly circulating said refrigerant from the valve means through a return line to said cooling means and thence back to said valve means, said refrigerant being vaporized in said heat exchange means, interruptedly condensed in said valve means and intermittently discharged into said return line, a portion of said refrigerant in said return line being returned to said heat exchange means, said steam valve being spring loaded for introducing pressurized vaporized refrigerant from said heat exchange means into said Venturi tube, said liquid jet pump being connected to said return line for introducing into said Venturi tube refrigerant returned from said cooling means to said valve means, said check valve connecting said Venturi tube with said return line and permitting said refrigerant to flow only in the direction from said Venturi tube to said return line, said valve being located at a height above said heat exchange means, wherein heat removal means is provided for removing heat from a second input liquid, said heat removal means comprising an evaporator and an associated throttle valve, said throttle valve being adapted to receive refrigerant between said cooler and said valve means through an evaporator inlet line, said evaporator being adapted to discharge refrigerant to said valve means through an evaporator outlet line, the method comprising the steps of: (a) introducing an input fluid containing waste heat into said heat exchange means, said input fluid having a temperature sufficiently high to vaporize and pressurize said refrigerant; (b) withdrawing said input fluid from said heat exchanger; (c) introducing a cooling fluid in heat exchange relationship with refrigerant in said cooler; (d) withdrawing said cooling fluid; (e) introducing an evaporator fluid in heat exchange relationship with refrigerant in said evaporator; and (f) withdrawing said evaporator fluid.

Claim 7

A method of operating apparatus for cooling an input liquid by waste heat comprising heat exchange means for receiving said waste heat and vaporizing a refrigerant, valve means comprising a steam valve, a Venturi tube a liquid jet pump, and a check valve, and cooling means for removing heat from an input liquid, said valve means interruptedly circulating said refrigerant from the valve means through a return line to said cooling means and thence back to said valve means, said refrigerant being vaporized in said heat exchange means, interruptedly condensed in said valve means and intermittently discharged into said return line, a portion of said refrigerant in said return line being returned to said heat exchange means, said steam valve being spring loaded for introducing pressurized vaporized refrigerant from said heat exchange means into said Venturi tube, said liquid jet pump being connected to said return line for introducing into said Venturi tube refrigerant returned from said cooling means to said valve means, said check valve connecting said Venturi tube with said return line and permitting said refrigerant to flow only in the direction from said Venturi tube to said return line, said valve being located at a height above said heat exchange means, wherein heat removal means is provided for removing heat from a second input liquid, said heat removal means comprising an evaporator and an associated throttle valve, said throttle valve being adapted to receive refrigerant between said cooler and said valve means through an evaporator inlet line, said evaporator being adapted to discharge refrigerant to said valve means through an evaporator outlet line, the method comprising the steps of: (a) introducing an input fluid containing waste heat into said heat exchange means, said input fluid having a temperature sufficiently high to vaporize and pressurize said refrigerant; (b) withdrawing said input fluid from said heat exchanger; (c) introducing a cooling fluid in heat exchange relationship with refrigerant in said cooler; (d) withdrawing said cooling fluid; (e) introducing an evaporator fluid in heat exchange relationship with refrigerant in said evaporator; and (f) withdrawing said evaporator fluid.