Unit for converting waste heat in refrigerating into environmentally-friendly new energy

Abstract

The invention provides a unit for converting waste heat in refrigerating into environmentally-friendly new energy, and belongs to the technical field of cold chain freezers and slaughtering and meat processing heat pumps. The unit is characterized in that the waste heat of a refrigerating system is completely recycled, thus coal-fired boilers of the slaughtering and meat processing industry and the food processing industry and a cooling tower and a cooling water pump of the refrigerating system can be replaced, and thus a completely novel technology for converting the waste heat in refrigerating into the environmentally-friendly new energy is provided to the slaughtering and meat processing industry and the food processing industry. The unit comprises a screw compressor (1), a horizontal condenser (2), a subcooler (3), a controller (4), a heat preserving type heat storing box (5), a hot water pump (6), a first-grade throttling device (7), a first-grade drying filtering device (8), a slaughtering and livestock scalding hot water tank (9), a guide tube condenser (10), a slaughtering and livestock washing hot water tank (11), a condensing hot water pump (12), an evaporating hot waterpump (13), a second-grade drying filtering device (14), a second-grade throttling device (15), a second-grade expansion valve (16), a dry evaporator (17), a semi-closed piston machine (18), a first-grade expansion valve (19), a supplemented water inlet control valve (10), a supplied refrigerating liquid outlet control valve (21), an evaporating condensing device (22), a refrigerating waste heat inlet control valve (23) and a prying body (24).

Description

Technical field: [0001] The patent of the invention relates to a co-generation cooling and heating unit that utilizes refrigeration waste heat to be converted into environmentally friendly new energy to realize simultaneous supply of refrigeration and heating, and belongs to the technical field of cold chain freezers and slaughtering meat processing heat pumps. Background technique: [0002] With the rapid development of China's economy, energy consumption continues to increase, but the overall level of energy recovery and utilization in China is not high at present; in the refrigeration industry, refrigeration units must be For cooling and cooling, a large amount of heat is generated during the cooling process, and the temperature of these heat energy is between 30°C and 40°C, which has no direct use value. Therefore, it is necessary to run a cooling tower and a cooling water pump for cooling to maintain refrigeration. In the normal operation of the system, all the waste he...

AI Technical Summary

Problems solved by technology

The working medium at the outlet of the horizontal condenser (2) enters the supercooler (3) for supercooling and exothermic heat, and the working medium at the outlet of the subcooler (3) enters the primary drying filter (8) for drying and purification, and the primary drying filter (8) The outlet working fluid enters the evaporative condenser (22) through the first-stage restrictor (7) and the first-stage expansion valve (9) to evaporate and absorb heat, and the outlet working fluid of the evaporative condenser (22) enters the screw compressor (1 ) to carry out a compression cycle, and the primary working fluid forms the internal circulation heating of the system; when the primary water system is working, the system supply water enters the water side of the subcooler (3) from the supplementary water inlet control valve (20) to preheat and supercool The outlet on the water side of the compressor (3) enters the water side of the screw compressor (1) for heat absorption, the outlet on the water side of the screw compressor (1) enters the buffer of the heat preservation heat storage tank (5), and the outlet of the heat preservation heat storage tank (5) enters the hot water pump (6) Boost the pressure, hot water from the outlet of the hot water pump (6) enters the water side of the horizontal condenser (2) for heat absorption, and the hot water from the outlet of the horizontal condenser (2) enters the buffer of the heat preservation accumulator (5); Unit 1 The first-stage system and the refrigeration system are interlocked to automatically control the start-up and shutdown work. When the refrigeration system starts or stops, the first-stage system automatically starts or stops, and the waste heat carrier working fluid from the refrigeration system enters the evaporation and condensation through the refrigeration waste heat inlet control valve (23). The device (22) releases heat, and the carrier working fluid after heat release is returned to the refrigeration system to circulate through the cooling liquid supply outlet control valve (21); the primary system and the secondary system can work at the same time or at different times. When the high-level system is working, it is to provide the required qualified thermal energy for the slaughterhouse, that is, the semi-hermetic piston machine (18) outlet working fluid enters the sleeve condenser (10) for condensation and heat release, and the sleeve condenser (10) outlet working fluid Enter the secondary dry filter (14) for drying and purification, the outlet working medium of the secondary dry filter (14) enters the dry evaporator (17) through the secondary throttle (15) and the secondary expansion valve (16) Evaporating and absorbing heat, the working medium at the outlet of the dry evaporator (17) enters the semi-closed piston machine (18) for a compression cycle, which goes round and round, and the working medium of the secondary system forms the internal circulation heating of the system; the secondary hot water system is formed by heat preservation and heat storage The hot water at the outlet of the tank (5) enters the condenser hot water pump (12) and the evaporative hot water pump (13) respectively for pressurization, and the hot water at the outlet of the condensing hot water pump (12) enters the water side of the casing condenser (10) to absorb heat. The high-temperature hot water at the outlet of the tube condenser (10) enters the buffer of the hot water pool (9) for slaughtering livestock and poultry scalding, and provides a high-temperature hot water source for the livestock and poultry scalding workshop, and the hot water at the outlet of the evaporating heat pump (13) enters the dry evaporator (17 ) part of the heat is released on the water side, and the hot water at the outlet of the dry evaporator (17) enters the buffer of the slaughtering livestock and poultry cleaning hot water pool (11), providing a cleaning hot water source for the livestock and poultry cleaning workshop; this technology solves the problem of slaughtering industry and food processing industry. At the same time, it solves the problem of atmospheric environmental pollution, the problem of large capital investment in "coal to electricity" or "coal to gas", and the problem of energy saving and consumption reduction of enterprises, which is beneficial to the sustainable development of the economy

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