System for preheating boiler feedwater and cooling condenser water

Abstract

A system for pre-heating boiler feedwater and cooling condenser water includes a boiler, a turbine, a turbine condenser, a heat pump, a first heat exchanger, a second heat exchanger, and an expansion valve. A water stream is heated by the boiler into a high pressure steam. The high pressure steam passes through the turbine and into the turbine condenser, converting the steam into condensate. The condensate is passed through a heat receiving side of the first heat exchanger. A refrigerant stream is pressurized by the heat pump and is thereby heated. The refrigerant stream passes through a heat dissipating side of the first heat exchanger, heating the condensate. The refrigerant stream is then depressurized and cooled, and passes through a heat receiving side of the second heat exchanger. A condenser water stream passes through a heat dissipating side of the second heat exchanger, cooling and entering the turbine condenser.

What is claimed is: 
     
         1 . A system for pre-heating condensate comprising:
 a boiler;   a turbine;   a turbine condenser;   a heat pump; and   a first heat exchanger, wherein   a first fluid is heated by the boiler into a high pressure steam, wherein the high pressure steam passes through the turbine and into the turbine condenser and is converted into a condensate, wherein the condensate is passed through a heat receiving side of the first heat exchanger, and   a second fluid is pressurized and thereby heated by the heat pump and passes through a heat dissipating side of the first heat exchanger, thereby heating the condensate.   
     
     
         2 . The system of  claim 1 , wherein the condensate is heated to about 180° F. while passing through the first heat exchanger, thereby becoming a preheated boiler feedwater. 
     
     
         3 . The system of  claim 1 , further comprising a pump pumping the condensate from the turbine condenser to the first heat exchanger. 
     
     
         4 . The system of  claim 1 , wherein the first fluid is water and the second fluid is a refrigerant. 
     
     
         5 . The system of  claim 1 , further comprising:
 a second heat exchanger; and   an expansion valve, wherein   the second fluid passes through the expansion valve, thereby depressurizing and cooling, and passes through a heat receiving side of the second heat exchanger, and   a third fluid passes through a heat dissipating side of the second heat exchanger, cooling and entering the turbine condenser.   
     
     
         6 . The system of  claim 5 , wherein the third fluid is water. 
     
     
         7 . The system of  claim 6 , wherein the third fluid is delivered from an outside water source. 
     
     
         8 . The system of  claim 7 , wherein the outside water source diverts into a first stream and a second stream, wherein the first stream passes through the heat dissipating side of the second heat exchanger and meets with the second stream, cooling the second stream and entering the turbine condenser. 
     
     
         9 . The system of  claim 6 , further comprising a cooling tower, wherein a warm water is discharged from the turbine condenser into a first stream and a second stream, wherein the first stream passes through the heat dissipating side of the second heat exchanger and the second stream passes through the cooling tower and meets with the first stream, cooling the second stream and entering the turbine condenser. 
     
     
         10 . A system for pre-heating condensate comprising:
 a boiler;   a turbine;   a turbine condenser;   a heat pump;   a first heat exchanger;   a second heat exchanger; and   an expansion valve, wherein   a water stream is heated by the boiler into a high pressure steam, wherein the high pressure steam passes through the turbine and into the turbine condenser and is converted into a condensate, wherein the condensate is passed through a heat receiving side of the first heat exchanger,   a refrigerant stream is pressurized and thereby heated by the heat pump, passes through a heat dissipating side of the first heat exchanger heating the condensate, passes through the expansion valve, thereby depressurizing and cooling, and passes through a heat receiving side of the second heat exchanger, and   a condenser water stream passes through a heat dissipating side of the second heat exchanger, cooling and entering the turbine condenser.   
     
     
         11 . The system of  claim 10 , wherein the condensate is heated to about 180° F. while passing through the first heat exchanger, thereby becoming a preheated boiler feedwater. 
     
     
         12 . The system of  claim 10 , further comprising a pump pumping the condensate from the turbine condenser to the first heat exchanger. 
     
     
         13 . The system of  claim 10 , wherein the condenser water is delivered from an outside water source. 
     
     
         14 . The system of  claim 13 , wherein the outside water source diverts into a first stream and a second stream, wherein the first stream passes through the heat dissipating side of the second heat exchanger and meets with the second stream, cooling the second stream and entering the turbine condenser. 
     
     
         15 . The system of  claim 10 , further comprising a cooling tower, wherein the condenser water stream comprises a warm water discharged from the turbine condenser into a first stream and a second stream, wherein the first stream passes through the heat dissipating side of the second heat exchanger and the second stream passes through the cooling tower and meets with the first stream, cooling the second stream and entering the turbine condenser.