KR100286568B1 - Waste water heat pump storage system - Google Patents

Abstract

PURPOSE: A heating and cooling heat source is provided to reduce fuel and power loss and maximize heat efficiency. CONSTITUTION: A heat loading tank is connected with a heat pump having an evaporator and a compressor. A waste water storage tank(6) and a heat pump(1) of a tube type are connected. A fluid circulates through a circulation pipe line(4). And 3 way-mixing valve(5) and a cool water circulation pump(12) are installed in one side of the circulation pipe line(4). In a heat exchanger(3) having tubes in the waste water storage tank(6), the temperature of the circulation fluid introduced to the evaporator(2a) of the heat exchanger(3) is set at 12 deg.C. As the fluid introduced to the evaporator cools down, the evaporated gas increases the temperature of the water in the compressor(2b).

Description

Heat storage wastewater heat pump system {WASTE WATER HEAT PUMP STORAGE SYSTEM}

The present invention is directed to a heat storage wastewater heat pump system invented to increase power efficiency and fuel efficiency while maximally reducing power and fuel used when operating an air conditioning system in an industrial site, a centrally supplied cooling / heating system for a large building, and supplying apartment heating. It is about.

Conventional cooling and heating heat exchanger equipment has a disadvantage that not only is a significant waste of power and fuel, but also a large heat loss due to the simple heating method of heating or a cooling system using a simple refrigerant cycle.

That is, in the conventional heating and hot water heat exchanger, the boiler 120 and the hot water storage tank 70 are installed as shown in FIG. 5 and then connected to the circulation pipeline 40 so that the water is circulated, and the circulation pipeline 40 One side is provided with a circulation pump 50 is configured to increase the circulation pressure of the water. Therefore, when the water is heated by driving the boiler 120, the heated hot water flows into the hot water storage tank filled with cold water by the circulation pipeline 40 and the cold water in the hot water storage tank 70 is the circulation pipeline 40. After the heating in the boiler 120 through the circulation to be introduced again into the hot water storage tank 70 by repeating the cold water of the hot water storage tank 70 is raised to a set temperature, the heat exchange device is made so that hot water is generated, the hot water storage tank In order to raise the cold water in the 70 to the set temperature, the boiler has to be continuously driven, thereby causing a problem in that electricity and fuel are consumed.

The present invention has been invented in view of the above problems, and aims to provide a cooling / heating heat source capable of maximizing thermal efficiency while minimizing heat loss and reducing power and fuel loss.

The present invention constitutes a cooling / heating heat exchange system using a hot water storage tank, a heat pump, a wastewater heat exchanger, and a 3-way-mixing valve, and wastewater having a temperature of about 30 ° C. generated in a bathroom, a home, or an industrial site during heating operation. Is introduced into the wastewater storage tank and the temperature of the cold water fluid is raised in the heat exchanger tube consisting of the main headline → distribution pipe → tube → return pipe. The heat exchanged fluid is mixed about 12 degrees while passing through the 3-way mixing valve. The gas that is introduced into the evaporator of the evaporator is transferred to the condenser and is heat-exchanged, and the hot water at room temperature (50 ° C.) in which the gas and the hot water are exchanged is circulated and stored in the hot water storage tank by the hot water circulation pump. By raising the temperature to about 50 ° C without using fuel, unlike boilers that use electricity and fuel, electricity and fuel consumption are reduced and hot water is used during operation. To be to prevent heat loss from the boiler to a minimum will have to be used for heating or hot water heating public baths, such as apartments, large buildings. Thus, the heat storage wastewater heat pump of the present invention converts the heat exchanger device for heating and hot water in winter to use as a hot water heat exchange system, and switches to a cooling system in summer to use as a refrigerant heat exchange system to save electricity and fuel. But it was invented to save energy by minimizing heat loss.

1 is a block diagram of a heat exchange system of the present invention.

Figure 2 is an exemplary view of the heat exchange tank plan configuration of the present invention.

Figure 3 is an exemplary view of the heat exchange tank front configuration of the present invention.

Figure 4 is a schematic diagram of the heat circulation tube installed in the heat exchange tank of the present invention.

5 is a block diagram of a conventional heat exchange system.

<Description of Signs for Main Parts of Drawings>

1: Heat pump 2a: Evaporator 2b: Condenser 3: Heat exchanger

4: Circulation pipeline 5: 3 way-mixing valve

6: wastewater storage tank 7: hot water storage tank

8: Main headline 9a: Spill distribution pipe

9b: inlet distribution pipe 10: tube 11: return pipe 12: cold water circulation pump 13: hot water circulation pump

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In a cooling and heating system using a heat storage heat pump consisting of an evaporator and a condenser, a known heat pump (1) consisting of an evaporator (2a) and a condenser (2b),

A heat exchanger (3) having a tube in the wastewater storage tank (6), a circulation pipeline (4) connecting the wastewater storage tank (6) and the heat pump (1) to circulate fluid, and the withdrawal and 3 way-mixing valve (5) and cold water circulation pump 12 installed on one side of the circulation pipeline (4), and the evaporator (2a) of the heat pump (1) in the heat exchanger in the waste water storage tank (6) Heat exchange system to maintain the temperature of the circulating fluid flowing into the predetermined temperature (about 12 ℃), and the hot water circulation pump (13) on one side of the condenser (2b) and hot water storage tank (7) of the heat pump (1) ) Is connected to the circulation pipe line (4 ') is installed to cool the fluid introduced into the evaporator (2a) and the evaporation gas is configured to heat the hot water of the condenser (2b) to accumulate the circulating hot water, the waste water storage tank Heat exchanger (3) is installed in the main headline (8) connected to the circulation pipe line (4) side of the evaporator (2a) Outflow distribution pipe (9a) is connected, the inlet distribution pipe (9b) connected to the plurality of return pipes 11 connected to the circulation pipe (4), the outlet distribution pipe (9a) and inlet distribution pipe (9b) In the waste water storage tank (6) comprising a U-shaped tube (10) and the outlet distribution pipe (9a), inlet distribution pipe (9b), U-shaped tube (10) which is located between the heat exchange is made The heat exchange is made so that the fluid is circulated to the evaporator (2a) of the heat pump (1). Reference numeral 14 is a heat insulating material installed on the inner wall of the storage tank, 15 is a waste inlet for the waste water to enter the storage tank, 16 is a waste outlet for the waste water to flow out of the storage tank, 17 is a compressor installed in the heat pump.

In the heat storage wastewater heat pump system of the present invention made as described above, the fluid (water) of about 7 ° C. passing through the heat pump (1) evaporator (2a) is installed in the wastewater storage tank (6) through the circulation pipeline (4). When it enters into the main headline 8 of the heat exchanger 3, when it flows out of a plurality of outflow distribution pipes 9a connected in communication with the main headline 8 to the U-shaped tube 10, the liquid flows into the tube 10. While making a U-turn, the wastewater in the wastewater storage tank 6 is exchanged with the wastewater, and then alternately positioned between the outlet distribution pipes 9a and flows into the inlet distribution pipe 9b installed to communicate with the return pipe 11. 11) the temperature of the fluid circulated to the circulating pipeline 4 is mixed with the fluid of about 7 ℃ of the other circulation pipeline while passing through the three-way mixing valve (5) at a temperature of about 28 ℃ Of the heat pump 1 by the cold water circulation pump 12 As the fluid flows into the evaporator 1a and cools the fluid from the evaporator 2a, the hot water of the condenser 2b is raised to about 50 ° C. and the heated water is stored by the hot water circulation pump 13 of the circulation pipe line 4. It is stored in the heat storage state in the tank (7). Thus, the hot water stored in the hot water storage tank 7 is continuously circulated by the hot water circulation pump 13, thereby preventing heat loss.

Therefore, when used as a heat exchange system for heating in winter, if you switch first to hot water and heating (the reverse displacement is installed on one side of the heater pump for heating or cooling function so that the switching to the heating or cooling system by adjusting the reverse displacement). The reverse displacement is known.) The heat pump 1 is converted to a heat storage state. At this time, the wastewater of the wastewater storage tank 6 flows into the hot water wastewater for home use, the hot water wastewater for the bathroom, the wastewater used as the industrial cooling water, and the like is stored in the storage tank, so that the wastewater storage tank in the evaporator 2a of the heat pump 1 is stored. Since the fluid circulated into the tube 10 of the heat exchanger 3 located at a lower temperature than the wastewater in the wastewater storage tank 6, the fluid in the heat exchanger circulates in an elevated state at about 28 ° C. when it comes into contact with the wastewater. While passing through the 3way-mixing valve (5), the 3way-mixing valve opens the other side automatically when the fluid flows in a state higher than the set temperature, so that the temperature is evaporated in the evaporator (2a). Low temperature (approximately 7 ℃) fluid on the) side is introduced into the evaporator 2a in a state where it is mixed with the high temperature about 28 ℃ fluid passed through the heat exchanger 3 and converted to the set temperature about 12 ℃. . The fluid introduced into the evaporator (2a) is the gas evaporated from the evaporator (2a) is transferred to the condenser (2b) is changed to room temperature of about 50 ℃ heat exchanged gas and hot water is stored by the hot water circulation pump (13) It is circulated and stored in the tank (7). The wastewater temperature of the heat exchange in the wastewater storage tank 6 carried out in this way is different from the temperature of the wastewater introduced according to the surrounding environment in which the wastewater storage tank is installed, but the gas evaporated from the evaporator 2a is transferred to the condenser 2b. Therefore, there is no defect in heat exchange between the gas and the hot water to warm the hot water. In the past, the temperature of the hot water is increased by only a heat source that heats the water of the hot water storage tank in a boiler without using the waste water storage tank. When the external temperature falls below zero, like in winter, waste of fuel is severe and thermal efficiency is reduced. However, in the heat storage wastewater heat pump system of the present invention, heat is stored up to about 50 ° C. without using any fuel, and hot water is continuously circulated by the hot water circulation pump 13 to prevent heat lost from the boiler, as well as heat exchange. It is to achieve it efficiently.

In addition, the present invention is to change the heat exchange system for cooling when operating the central supply air conditioner in large buildings, industrial sites, department stores, etc. in the summer season, the fluid heat-exchanged in the waste water to the elevated refrigerant of the condenser (2b) connected to the refrigerant cycle By condensing while evaporating in (2a), it is possible to considerably reduce the power consumption which is used enormously to condense the refrigerant.

The present invention made as described above is connected to a heat pump (1) consisting of a condenser (2b) and an evaporator (2a) and a heat exchanger (3) having a fin-shaped tube (10) by means of a circulating pipeline (4). By configuring the heat exchange system to perform heat exchange in the collected tank, not only the fuel cost is required but also the heat exchange by switching to the heat exchange of the cooling or heating system.

The heat storage wastewater heat pump system of the present invention can not only cool or heat by simple operation, but also minimize the heat loss lost to the outside during the cooling or heating system operation to maximize thermal efficiency to minimize energy generated during cooling and heating. In order to save energy, the present invention prevents heat loss from the boiler by storing heat of hot water up to about 50 ° C. without using any fuel during hot water and heating operation, and prevents exhaust gas from being emitted at all. When installed in poor apartment complexes, large buildings, public baths, theaters, department stores, industrial sites, etc. in Korea, hot water is heated, saving energy can be unimaginable from a national perspective.

Claims (2)

In a heat storage air-conditioning system having a circulation pipeline for connecting a heat storage tank with a known heat pump such as an evaporator and a condenser to circulate a fluid, A three-way mixing valve 5 and a cold water circulation pump 12 installed at one side of the circulation pipe line 4 through which the waste water storage tank 6 and the normal heat pump 1 are connected and drawn in and out; A heat exchange system for maintaining a set temperature of circulating fluid flowing from the heat exchanger (3) having tubes in the wastewater storage tank (6) to the evaporator (2a) of the heat pump (1) at about 12 ° C; The condenser 2b of the heat pump 1 is connected to a circulation pipe line 4 'having a hot water circulation pump 13 installed at one side of the hot water storage tank 7 to evaporate while cooling the fluid introduced into the evaporator 2a. Heat storage wastewater heat pump system, characterized in that the gas is configured to raise the hot water of the condenser (2b) to accumulate circulating hot water. The method of claim 1, The heat exchanger (3) installed in the wastewater storage tank includes an outlet distribution pipe (9a) connected to a plurality of main headlines (8) connected to the circulating pipeline (4) on the evaporator (2a) side, and Inlet distribution pipe (9b) and a plurality of connected to the return pipe (11) connected to the circulation pipe line (4), A convex tube (10) positioned between the outlet distribution pipe (9a) and the inlet distribution pipe (9b) to allow heat exchange; Heat storage wastewater heat pump system characterized in that the heat exchange is made in the waste water storage tank (6) comprising the outlet distribution pipe (9a), inlet distribution pipe (9b), U-shaped tube (10) .