KR20200048621A - Energy-saving heat pump that heats cooling water using condensation heat - Google Patents

Abstract

The present invention relates to a water-cooled energy-saving heat pump for heating coolant by using condensation heat. In a refrigerator, which uses only a cooling action as a high-pressure gas refrigeration principle, in which the energy use efficiency of the refrigeration or heating capacity as an output for input compressor power is not less than 4, and uses an air-cooled condenser having caused many side effects while emitting condensation heat to the atmosphere, the energy-saving heat pump reduces a high pressure in the condenser and raises a low pressure in a suction side of a compressor by using a heat pump action together using a cooling action for absorbing heat and a heating action for emitting heat to reduce the work done of a refrigerator compressor, thereby leading to power saving. The energy-saving heat pump obtains a double effect of obtaining hot water by using that water is heated by heat emitted by the condenser while effectively cooling a high-temperature condenser by using the water as a coolant instead of air for cooling the condenser, allows the power of the compressor to be used less by the movement of the heat, thereby increasing energy efficiency, and makes hot water by using the heat emitted from the condenser together with a cooling action of absorbing heat from a general refrigerator.

Description

Energy-saving heat pump that heats cooling water using condensation heat

Before the mechanical refrigerator was invented, refrigeration using natural ice was used, and as the refrigeration technology developed, artificial ice for refrigeration was produced in large quantities. Consumed refrigerant refrigeration, thermoelectric refrigeration, and absorption refrigeration were used in each field. Since the refrigeration system using a high-pressure gas refrigerant compressor has been put into practical use, most refrigeration systems use a heat pump refrigeration method of a high-pressure gas compressor with a high performance factor of 4 or higher, and are also applied to household refrigerators, commercial refrigerators, and air conditioners. However, there are some problems and side effects in terms of efficiency and practical use of thermal energy.

The present invention is configured to combine the heat exchangers together to use the coolant of the water-cooled condenser as hot water in the refrigerant piping system of the existing refrigerator that uses the effect of heat transfer due to the high-pressure gas refrigerant state change characteristics. Hereinafter, the contents of the present invention will be described with reference to the accompanying drawings.

In the present invention, by applying heat exchange technology of a heat pump device of a refrigerator or an air conditioner of a ship or aircraft, the condensation efficiency of the refrigerator is improved and the performance coefficient is improved. First, while using a cooling action to absorb heat from the evaporator of the refrigerator, relative As it cools the condenser of high temperature and high pressure as water, it increases the condensing efficiency, and adopts a water-cooled condenser that uses cold water as hot water by the heat emitted from the condenser. Second, increase the pressure on the low pressure side by applying heat to the outlet of the evaporator and the suction side of the compressor, rapidly cool the condenser to lower the pressure on the high pressure side, and reduce the pressure difference between the low pressure side and the high pressure side of the high pressure gas refrigerant compressor to reduce the power of the compressor. Reduces it. Third, in the water-cooled condenser, the heat exchange is performed by passing the refrigerant pipe of high temperature and high pressure inside the pipe through which the cooling water flows, so that the surface is integrally treated simply to form a water-cooled condenser without gaps. As described above, using the cooling action to absorb heat as a function of the existing refrigerator, and using the heat dissipation action to heat the cooling water to hot water with the heat emitted from the water-cooled condenser, the heat exchange action reduces the amount of refrigerant compressor to reduce the power consumption. As a device for consuming thermodynamics, the present invention provides a technology for manufacturing a power-saving heat pump that heats cooling water with water-cooled condensation heat with practicality and economy.

In order to increase the COP of the high-pressure gas freezer, the heat dissipation action of the condenser and the heat absorption action of the evaporator are quickened to lower the high pressure of the condenser, increase the low pressure of the evaporator, reduce the pressure difference of high and low pressure, and reduce the pressure difference of the compressor. Is reduced. What is intended to be described in FIG. 2 is that if the heat energy of the heat pump device having a coefficient of performance (COP) of 4 or more is used, energy use efficiency can be greatly improved. The output coefficient of heat (heat absorption cooling capacity or heat release heating capacity) is only 4 times compared to the input power, so the coefficient of performance (COP) is 4 times, so if heat absorption and heat dissipation are used simultaneously, it is 8 times. If configured properly, the input power of the compressor can be reduced, so the overall coefficient of performance (COP) can be increased to 8 or more. The electrical circuit diagram of FIG. 3 is similar to that of driving a general refrigerator. Since it is electrically interlocked by a contactor selected by a temperature sensor that senses temperature, one of the coolant circulation pump (WCP) or the coolant solenoid valve (W.SV) is selected to operate. The present invention, the air cooling of the existing refrigerator Inefficient problem that the coefficient of performance was low in the condenser, and the trilogy that raised the ambient temperature in the summer due to the heat dissipation of the condenser In order to remove, while using a cooling action to absorb heat from the evaporator while using a heating action to dissipate heat from the condenser, a water-cooled condenser and a heat exchanger of a cooling water circulation system are combined to form a high-pressure gas refrigerant heat pump device. It is to construct a power-saving heat pump that heats the cooling water with the water-cooled condensation heat, which improves the energy efficiency and improves the performance coefficient of energy efficiency.

As household life is getting bigger and larger as well as household refrigerators, it saves electricity while utilizing heat energy that has been left unprotected in the condenser of high-pressure gas refrigerant heat pump devices such as commercial refrigerators and air-conditioning air conditioners. In addition to the economy, there is provided a power saving heat pump that heats the cooling water with water-cooled condensation heat contributing to the national economy.

1 is a system diagram of a refrigerant and a coolant system of a power-saving refrigerator that converts the power of a water-cooled condenser into hot water and reduces the power of the compressor through a heat exchange action. FIG. 2 is an input power of the refrigerant compressor that determines the performance coefficient of the high-pressure gas freezer, and of the evaporator and condenser. FIG. 3 is an electrical circuit diagram for driving a power saving heat pump that heats cooling water with water-cooled condensation heat of the present invention.

1 is a diagram of a refrigerant and cooling water system of a power-saving refrigerator that uses cooling water from a water-cooled condenser as hot water and reduces the power of the compressor by the action of a heat exchanger, and 2 is an input power of a refrigerant compressor that determines the performance coefficient of a high-pressure gas freezer. It is a city diagram for explaining the output heat energy transfer of the evaporator and the condenser, and FIG. 3 is an electric circuit diagram for driving the power saving refrigerator of the present invention. When the refrigerant compressor (COMP) is in normal operation, the flow of fluid refrigerant is in the direction of the arrow. The thick solid line indicates the high-temperature and high-pressure side, and the double thin solid line indicates the low-temperature and low-pressure side outside the thick solid line. The circulation system of fluid refrigerant is refrigerant compressor (COMP)-air-cooled condenser (ACD). -High temperature gas electromagnetic valve (HG.SV)-Water-cooled condenser (WCD)-Filter dryer (FD)-Heat exchanger (HEXC)-Automatic expansion valve (EXPV)-Primary evaporator (EVP1)-Secondary refrigerant evaporator (EVP2) )-Heat exchanger (HEXC)-Compressor oil cooler (COC)-Refrigerant compressor (COMP), consisting of heat remaining at the water-cooled condenser (WCD) outlet side, and secondary refrigerant storage evaporator (EVP2) outlet side As the cooling state complements each other, as the heat energy moves in the heat exchanger (HEXC), the low pressure at the suction side of the refrigerant compressor (COMP) is increased, and the high pressure at the discharge side of the refrigerant compressor (COMP) is lowered, thereby reducing the refrigerant compressor (COMP). The compressive power load of the motor is reduced, which is primarily power saving. In order to use low-temperature tap water used as cooling water to cool the high-temperature and high-pressure water-cooled condensers (WCD) as hot water, cooling water electromagnetic valves (W.SV)-water-cooled condensers (WCD)-Cooling water circulation pump (WCP)-Reverse valve (CV)-Hot water tank (HWT)-Hot water valve (HWV) is connected to the water pipe, and when the cooling water temperature of the water cooling condenser (WCD) is low, the cooling water electromagnetic valve (W.SV) is blocked, and the cooling water circulation pump (WCP) When the cooling water temperature of the water-cooled condenser (WCD) increases, the cooling water solenoid valve (W.SV) opens, and the cooling water circulation pump (WCP) is blocked, so that the heated cooling water is pushed into the tap water to reverse the water (CV ) To be stored in a hot water tank (HWT) and used when needed.

COMP: refrigerant compressor ACD: air-cooled condenser WCD: water-cooled condenser EXPV: automatic expansion valve EXPV1: primary evaporator EXPV2: secondary side evaporator HEXC: heat exchanger COC: compressor oil cooler HGL: high temperature gas line HG.SV: high temperature gas electromagnetic FD : Filter dryer W.SV: Cooling water solenoid valve WCP: Cooling water circulation pump CV: Reverse valve HWT: Hot water tank HWV: Hot water valve

Claims (1)

The circulation system of fluid refrigerant is: refrigerant compressor (COMP)-air-cooled condenser (ACD)-high temperature gas electromagnetic valve (HG.SV)-water-cooled condenser (WCD)-filter dryer (FD)-heat exchanger (HEXC)-automatic expansion valve ( EXPV)-1st evaporator (EXPV1)-2nd axis cold evaporator (EXPV2)-Heat exchanger (HEXC)-Compressor oil cooler (COC)-Refrigerant compressor (COMP) connected by copper tube piping and combined into a complete hermetic circulation cycle, Cooling of water cooled condenser (WCD) while heating water to increase the temperature of tap water with heat exchanged. Cooling water solenoid valve (W.SV)-Water cooled condenser (WCD)-Cooling water circulation pump (WCP)-Reverse water (CV)-Hot water tank (HWT) ) -A combination of hot water valves (HWV), a power-saving heat pump that heats the cooling water with water-cooled condensation heat that combines the cooling action of the evaporator and the heat dissipation of the high-temperature condenser.

Images