Dehumidifying Cooling Device for District Heating

Abstract

Disclosed is a dehumidifying cooling device for district heating which comprises; a case having a first partition to divide the interior of the case into a wet channel and a dry channel and a second partition to divided the wet channel into a first wet channel and a second wet channel, a sensible heat exchanger to heat exchange the outside air in the first wet channel with the outside air in the second wet channel, a heating coil for raising the temperature of the outside air in the second wet channel, a rotatable de humidifying wheel for adsorbing and removing moisture contained in the circulated air within the dry channel, and a regenerative-evaporative cooler for cooling the circulated air in the dry channel. With this configuration, the device can carry out an air cooling operation by use of hot water supplied by district heating systems and gas or oil boilers installed in individual households, thereby achieving a reduced device size via the implementation of the cooling operation under the atmospheric pressure state and reducing manufacturing costs by virtue of a simplified system configuration.

1 . A dehumidifying cooling device for district heating comprising:
 a case having a first partition to divide the interior of the case into a wet channel and a dry channel and a second partition to divide the wet channel into a first wet channel and a second wet channel, the first wet channel being provided at one end thereof with an outside air suction hole for introducing outside air into the first wet channel, the second wet channel being provided at one end thereof with an exhaust hole for discharging the outside air, the second partition being perforated with a flow hole for transferring the outside air from the first wet channel into the second wet channel, the dry channel being provided, at one end thereof, with a circulated air suction hole for introducing circulated air from a conditioning space into the dry channel and, at the other end thereof, with an air supply hole for supplying cooling air into the conditioning space,   a sensible heat exchanger configured to rotate about the second partition and serving to heat exchange the outside air, introduced into the first wet channel through the outside air suction hole, with the outside air to be discharged from the second wet channel;   a heating coil installed in the second wet channel at a position between a rear end of the sensible heat exchanger and the flow hole and serving to raise the temperature of the outside air passing through the second wet channel by use of heat of hot water introduced into the heating coil;   a dehumidifying wheel configured to rotate about the first partition at a position between a rear end of the heating coil and the flow hole and serving to adsorb and remove moisture contained in the circulated air within the dry channel, the dehumidifying wheel being regenerated by evaporating the adsorbed moisture to thereby supply the evaporated moisture into the high-temperature outside air in the first wet channel; and   a regenerative-evaporative cooler installed in the dry channel at a position between the circulated air supply hole and the dehumidifying wheel and serving to cool the circulated air in the dry channel, which was dehumidified into high-temperature dry air by the dehumidifying wheel and subsequently, heat exchanged and cooled, the cooled circulated air being delivered to the air supply hole of the case.   
   
   
       2 . The device according to  claim 1 , further comprising:
 a direct-evaporative cooler installed in the dry channel at a position in front of the regenerative-evaporative cooler, the direct-evaporative cooler serving to carry out a secondary cooling operation of the circulated air discharged from the regenerative-evaporative cooler.   
   
   
       3 . The device according to  claim 1 , further comprising:
 a first filter installed in the first wet channel at a position between the outside air suction hole and the sensible heat exchanger and serving to remove impurities contained in the outside air.   
   
   
       4 . The device according to  claim 1 , further comprising:
 an exhaust blower installed in the second wet channel at a position between the sensible heat exchanger and the flow hole and serving to forcibly discharge the outside air from the second wet channel through the exhaust hole.   
   
   
       5 . The device according to  claim 1 , further comprising:
 a second filter installed between the circulated air suction hole and the dehumidifying wheel and serving to remove impurities contained in the circulated air; and   an air supply blower installed between the dehumidifying wheel and the regenerative-evaporative cooler and serving to forcibly discharge the cooled circulated air from the dry channel through the air supply hole,   wherein the second filter and the air supply blower are installed the dry channel.   
   
   
       6 . The device according to  claim 1 , wherein the case further has a cooler exhaust hole provided at the dry channel for discharging high-temperature air generated while the regenerative-evaporative cooler carried out a secondary cooling operation. 
   
   
       7 . The device according to  claim 6 , wherein the amount of the high-temperature air to be discharged through the cooler exhaust hole is 30% of the total circulated air. 
   
   
       8 . The device according to  claim 1 , wherein the hot water to be introduced into the heating coil is delivered from any one selected from among a cogeneration plant, a heating boiler, a micro-turbine, a small gas engine, a small gas turbine, a gas boiler, and an oil boiler. 
   
   
       9 . The device according to  claim 1 , wherein the circulated air suctioned through the circulated air suction hole is mixed with the outside air by a predetermined mixing ratio. 
   
   
       10 . The device according to  claim 1 , wherein the predetermined mixing ratio of the circulated air to the outside air is 7:3.