Heating and hot water supplying system using fuel cell

Abstract

A heating and hot-water supplying system which includes a fuel cell and a boiler installed in either one of a home or a building. The fluid may be heated by reaction heat from the fuel cell and combustion heat from the boiler, and circulated to heat an inside of a floor of either one of the home or the building. Further, the reaction heat from the fuel cell and the combustion heat from the boiler may be used to heat water, thereby providing hot water to either one of a lavatory or a kitchen of the home or the building.

1 . A heating and hot-water supplying system comprising: 
 a boiler;    a fuel cell;    a storage tank that recollects and stores reaction heat generated by the fuel cell through a fluid;    a radiating unit installed inside either one of a home or a building where the boiler and the fuel cell are installed, wherein the radiating unit heats an indoor room;    a hot-water line to which water is supplied from outside, wherein the hot-water line supplies hot water into the home or the building via the boiler and the storage tank;    a heated fluid supplying line which connects the storage tank, the boiler, and the radiating unit to one another so that the fluid inside the storage tank is supplied to the radiating unit via the boiler;    a recollecting line which connects the radiating unit and the storage tank to each other so that the fluid heat-exchanged in the radiating unit is introduced into the storage tank; and    a flow amount controlling unit that controls a fluid flow through the heated fluid supplying line.    
   
   
       2 . The heating and hot-water supplying system according to  claim 1 , 
 wherein the radiating unit is arranged inside a floor of the home or the building, and is provided as a curved line.    
   
   
       3 . The heating and hot-water supplying system according to  claim 1 , 
 wherein a part of the hot-water line comes in contact with the fluid of the storage tank, thereby heat-exchanging the fluid flowing through the hot-water line with the fluid inside the storage tank.    
   
   
       4 . The heating and hot-water supplying system according to  claim 1 , 
 wherein the hot-water line is partially exposed to combustion heat of a burner of the boiler, thereby heating the fluid flowing through the hot-water line.    
   
   
       5 . The heating and hot-water supplying system according to  claim 1 , 
 wherein the heated fluid supplying line is partially exposed to combustion heat of a burner of the boiler, thereby heating the fluid flowing through the heated fluid supplying line.    
   
   
       6 . The heating and hot-water supplying system according to  claim 1 , 
 wherein the flow amount controlling unit is mounted at the heated fluid supplying line and positioned between the storage tank and the boiler.    
   
   
       7 . The heating and hot-water supplying system according to  claim 1 , further comprising: 
 a first heat exchanger connected at one side to the storage tank by an inlet line, and connected at another side to the storage tank by an outlet line,    wherein the first heat exchanger is configured to exchange heat between fluid inside the storage tank and inside the fuel cell.    
   
   
       8 . The heating and hot-water supplying system according to  claim 7 , 
 wherein water flowing through the hot-water line is heated while passing through a second heat exchanger provided in the storage tank and a third heat exchanger provided in the boiler.    
   
   
       9 . The heating and hot-water supplying system according to  claim 8 , 
 wherein water flowing through the hot-water line is heated by the third heat exchanger, provided in the boiler, when the temperature of the water is less than a preset temperature.    
   
   
       10 . A heating and hot-water supplying system comprising: 
 a boiler:    a fuel cell;    a storage tank that recollects and sores reaction heat generated by the fuel cell through a fluid;    a radiating unit installed inside a home or a building where the boiler and the fuel cell are installed, wherein the radiating unit heats an indoor room;    a hot-water line to which water is supplied from outside, wherein the hot-water line supplies hot water into the home or the building via the boiler and the storage tank;    a first heat supplying line which supplies a part of water flowing through the hot-water line to the radiating unit via the boiler;    a returning line which connects the radiating unit and the first heat supplying line to each other so that the fluid heat-exchanged in the radiating unit can be circulated via the boiler; and    a switching unit which is configured to allow or cut-off a supply of water of the hot-water line to the first heat supplying line.    
   
   
       11 . The heating and hot-water supplying system according to  claim 10 , 
 wherein a supplementary tank which stores hot water supplied from the hot-water line is provided at a connection portion between the first heat supplying line and the returning line.    
   
   
       12 . The heating and hot-water supplying system according to  claim 10 , 
 wherein the radiating unit is arranged inside a floor of the home or the building as a curved line.    
   
   
       13 . The heating and hot-water supplying system according to  claim 10 , further comprising: 
 a first heat exchanger connected at one side to the storage tank by an inlet line, and connected at another side to the storage tank by an outlet line,    wherein the first heat exchanger is configured to exchange heat between fluid inside the storage tank and inside the fuel cell.    
   
   
       14 . The heating and hot-water supplying system according to  claim 13 , 
 wherein water flowing through the hot-water line is heated while passing through a second heat exchanger provided in the storage tank and a third heat exchanger provided in the boiler.    
   
   
       15 . The heating and hot-water supplying system according to  claim 14 , 
 wherein water flowing through the hot-water line is heated by the third heat exchanger, provided in the boiler, when the temperature of the water is less than a preset temperature.    
   
   
       16 . A heating and hot-water supplying system comprising a fuel cell and a boiler installed in either one of a home or a building, 
 wherein a fluid is heated by reaction heat from the fuel cell and combustion heat from the boiler, and the fluid is circulated to heat an inside of a floor of either one of the home or the building, and    wherein the reaction heat from the fuel cell and the combustion heat from the boiler are used to heat water, thereby providing hot water to either one of a lavatory or a kitchen of the home or the building.    
   
   
       17 . The heating and hot-water supplying system according to  claim 16 , 
 wherein a storage tank, which recollects reaction heat generated by the fuel cell, is provided between the fuel cell and boiler.    
   
   
       18 . The heating and hot-water supplying system according to  claim 17 , comprising: 
 a first heat exchanger connected at one side to the storage tank by an inlet line, and connected at another side to the storage tank by an outlet line,    wherein the first heat exchanger is configured to exchange heat between fluid inside the storage tank and inside the fuel cell.    
   
   
       19 . The heating and hot-water supplying system according to  claim 18 , 
 wherein water flowing through the hot-water line is heated while passing through a second heat exchanger provided in the storage tank and a third heat exchanger provided in the boiler.    
   
   
       20 . The heating and hot-water supplying system according to  claim 19 , 
 wherein water flowing through the hot-water line is heated by the third heat exchanger, provided in the boiler, when the temperature of the water is less than a preset temperature.