Refrigeration heat recovery device capable of producing high-temperature hot water and heat recovery method

Abstract

A refrigeration heat recovery device and heat recovery method capable of producing high-temperature hot water. The first one-way valve, liquid storage tank, filter, solenoid valve, sight glass, thermal expansion valve, and air cooler are connected in series in a ring; the outlet end of the casing heat exchanger is connected to the circulating water inlet end of the water tank through a water pipe, The circulating water outlet end of the water tank is connected to the water inlet end of the casing heat exchanger through the water pump; the temperature sensing element is installed on the water tank; the high pressure end d of the first four-way reversing valve is connected with the outlet pipeline of the oil separator, and the low pressure end b It is connected to the suction pipe of the compressor, the a end is connected to the refrigerant inlet port of the sleeve heat exchanger, and the c end is connected to the second one-way valve inlet end; the e end of the high pressure end of the second four-way reversing valve is refrigerated The agent outlet end is connected, and the low-pressure end g end is also connected with the suction port pipeline of the compressor. The invention can realize heat recovery while cooling, and has fast heating speed and high production temperature.

Description

technical field [0001] The invention relates to the technical field of condensation heat recovery of refrigeration units, in particular to a refrigeration heat recovery device and a heat recovery method capable of producing high-temperature hot water. Background technique [0002] Ordinary refrigeration units emit a large amount of condensation heat directly to the atmosphere while evaporative cooling in the room. This method is not only not environmentally friendly, but also energy-saving. The practice of using the condensation heat of the refrigeration unit to produce hot water has been paid more and more attention and popularized. However, there is no condensation heat recovery product on the refrigerating unit at present, and most of the water-cooled condensers and air-cooled condensers in the air-conditioning heat pump water heater are connected in parallel, and some are connected in series. The air-conditioning heat pump water heater connected in parallel is limited b...

AI Technical Summary

Problems solved by technology

However, there is no condensation heat recovery product on the refrigeration unit at present, and most of the water-cooled condensers and air-cooled condensers in the air-conditioning heat pump water heater are connected in parallel, and some are connected in series

The air-conditioning heat pump water heater connected in parallel is limited by the condensation pressure, and the temperature of the hot water produced usually reaches a maximum of about 55°C. Some national standards stipulate that the water temperature in the water heater must be higher than 60°C for a certain period of time to prevent bacteria from growing. Therefore Hygienic hazards exist in air-conditioning heat pump water heaters connected in parallel

However, when the air-conditioning heat pump water heater connected in series is used to produce hot water, only part of the condensation heat is used to heat the water, so the temperature rise of the hot water is very slow, so it is better to use the air-conditioning heat pump water heater connected in parallel

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