KR970022055A - Heat pump device using new alternative refrigerant gas HFC (HYDRO-FLUOROCARBON), its operation method and its retrofit method - Google Patents

Abstract

A heat pump device in which a new replacement refrigerant gas HFC (fluorocarbon including hydrogen) is singly or mixed and injected for cooling, refrigeration and freezing operation.

A heat pump apparatus including a compressor, a condenser, an expansion plate (including a capillary tube), and an evaporator, wherein the heat dissipation amount of the condenser is 1.5 times or more of the freezing amount, and the refrigerant gas is free of bubbles at a predetermined condensation temperature. Condense until it reaches liquid state. In addition, in order to maintain this state stably for a long time, the condensation temperature is lowered by 5 ° C or more than the conventional one.

Description

Heat pump device using new alternative refrigerant gas HFC (HYDPRO-FLUOROCARBON), its operation method and retrofit method

As this is a public information case, the full text was not included.

FIG. 1 shows the configuration of a heat pump apparatus which uses an HFC refrigerant gas by setting an air-cooled capacitor 2B in an air-cooled capacitor 2A and setting the condensation temperature of the refrigerant gas to a low temperature within 5 ° C of the atmospheric temperature. schematic,

FIG. 2 is a heat pump apparatus which uses a HFC refrigerant gas to operate by setting a water cooling capacitor 2C2 to a water cooling capacitor 2C1 and setting the condensation temperature of the refrigerant gas to a temperature lower than 1 ° C above the water temperature sent to the water cooling capacitor. Schematic diagram of

3 is a heat pump operated by using the refrigerant gas of the HFC system by extracting the air-cooled capacitors (2B) and (2B2) in the air-cooled capacitor (2A) and setting the condensation temperature of the refrigerant gas to a low temperature within 5 ° C plus atmospheric temperature Schematic diagram of the device.

Claims (9)

A compressor that compresses a gaseous HFC (hydrofluorocarbon) refrigerant to a predetermined pressure, and a heat dissipation amount of at least 1.5 times the amount of the refrigerant that condenses the HF refrigerant at a predetermined condensation temperature until it reaches a bubble-free liquid state. An evaporator connected to a condenser connected to the compressor, an expansion plate (including capillary tube) connected to the condenser, and a compressor connected to the expansion plate to return the HFC refrigerant exiting the expansion plate to the gas state. Heat pump device using a new replacement refrigerant gas HFC comprising a. The heat pump apparatus according to claim 1, wherein the condensation temperature of the HFC refrigerant exiting the condenser and entering the expansion plate is adjusted to an atmospheric temperature plus 5 ° C. A heat pump having a compressor, a condenser, an expansion plate (including a capillary tube), and an evaporator, the method comprising selecting HFC (hydrofluorocarbon) as a refrigerant, and selecting the HFC refrigerant in a gas state in the evaporator. Compressing the compressed HFC refrigerant with a condenser having a heat dissipation amount of at least 1.5 times the amount of freezing, and compressing the compressed HFC refrigerant with a condenser having a heat dissipation amount of at least 1.5 times the amount of freezing at a predetermined condensation temperature. Condensation until a liquid state is reached, and an expansion plate (including capillary tube) and an evaporator connected to the expansion plate bring the liquid HFC refrigerant from the liquid state to the gas state. A method of operating a heat pump apparatus using a new replacement refrigerant gas HFC, characterized in that it comprises a step. 4. The method of operating a heat pump apparatus using a new replacement refrigerant gas HFC, comprising the step of condensing the HFC refrigerant exiting the condenser and entering the expansion plate within an atmospheric temperature plus 5 ° C. In the existing heat pump with a compressor, a condenser, an expansion plate (including capillary tube), and an evaporator, a step of extracting the refrigerant gas of the current and changing the heat dissipation amount of the condenser to 1.5 times or more of the freezing amount A method of operating a heat pump apparatus using a new replacement refrigerant gas HFC, comprising a step of enclosing an HFC (hydrofluorocarbon) refrigerant. The heat pump using a new replacement refrigerant gas HFC according to claim 5, further comprising the step of measuring the condensation temperature of the HFC refrigerant exiting the condenser and entering the expansion plate and confirming that the condensation temperature is within atmospheric temperature plus 5 ° C. How to retrofit a device. 6. The heat pump apparatus according to claim 5, further comprising a step of measuring a condensation temperature of the HFC refrigerant exiting the condenser and entering the expansion plate, and adjusting the condensation temperature within an atmosphere temperature plus 5 ° C. Of the retrofit method. The replacement refrigerant according to any one of claims 5 to 7, further comprising a step of attaching a liquid level meter between the condenser and the expansion plate to visually recognize that the HFC refrigerant is in a bubble-free liquid state at a predetermined condensation temperature. Retrofit method of heat pump apparatus using gas HFC. The method of retrofitting a heat pump apparatus using a new replacement refrigerant gas HFC according to claim 8, wherein the liquid level gauge attached between the condenser and the expansion plate is removed, and a step of connecting them therebetween is added. ※ Note: The disclosure is based on the initial application.