Industrial cold and hot balance unit system and control method thereof

Abstract

The invention relates to an industrial cold and hot balance unit system and a control method of the industrial cold and hot balance unit system, and relates to an energy recycling system for a combined heating and refrigeration system and a control method of the energy recycling system. The industrial cold and hot balance unit system comprises a cold and hot balance unit, a cold air subsystem, a hot air subsystem, a hot water subsystem and a control device, wherein the cold and hot balance unit comprises a refrigerant circulation loop with the cold and hot balance configuration and a refrigerant circulation loop with the heat pump configuration, a control device has control over configuration switching of the refrigerant circulation loops through an electric three-way valve, a hot water condenser and a heating medium water pump form a heating medium water circulation loop sequentially through a heat storage water tank and a combined air cabinet hot water coil pipe, and a cold water evaporator and a refrigerant water pump form a refrigerant water circulation loop through a combined air cabinet cold water coil pipe. The cold and hot balance unit is controlled through the control device, balance transfer of cooling and heating loads is achieved, the cooling and heating load requirement and the temperature and humidity requirement of workshops are met, effective balance of the cooling and heating loads is ensured, the equipment utilization rate is high, the cost is low, energy is effectively utilized, and energy is sufficiently saved.

Description

Technical field [0001] The invention relates to an energy recovery and utilization system for heating and refrigeration combined systems and a control method thereof, in particular to an industrial cold-heat balance unit system and a control method for the system. Background technique [0002] my country’s industrial energy consumption accounts for about 70% of the country’s total energy consumption, and the average energy consumption per unit of major industrial products is about 30% higher than the international advanced level. In addition to the relatively backward production technology and the unreasonable industrial structure, the low utilization rate of industrial waste heat is an important reason for the high energy consumption. my country's energy utilization rate is only about 33%, about 10% lower than that of developed countries, and at least 50%. Industrial energy is directly discarded as waste heat in various forms. Therefore, from another perspective, my country’s in...

AI Technical Summary

Problems solved by technology

However, because each industrial enterprise has different energy consumption conditions, and there is no detailed research on the actual needs of the enterprise, the use of the above-mentioned general-purpose cooling and heating balance unit equipment cannot make rational use of the cooling and heating loads, and cannot Effectively save investment costs, and may even cause a decrease in the utilization rate of equipment, and it is difficult to effectively control the system to achieve long-term safe, stable, and efficient operation

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