Control method of heat recovery composite energy system for hospital building

Abstract

The invention relates to a control method of a heat recovery composite energy system for hospital buildings. The control method comprises the heat recovery composite energy system, wherein the heat recovery composite energy system is composed of a GSHP (Ground Source Heat Pump) air conditioning system, a hot water storage tank, a thermostatic water tank, a backwater electromagnetic valve and a control cabinet, all of which are connected circularly and in order; the GSHP air conditioning system is a combined system of a partial heat recovery GSHP machine set and a total heat GSHP machine set; the thermostatic water tank is internally provided with an electric heating device in connection with the control cabinet; the control method further comprises a control step of the partial heat recovery GSHP machine set, a control sep of the total heat recovery GSHP machine set, a temperature fixing and water supplementation step of a liquid level controller, a temperature difference circulation step, a pipeline circulation step and an electric heating device auxiliary step. The control method of the heat recovery composite energy system for the hospital buildings is conductive to stability of the system, and meanwhile, automatic control of the system is realized, convenience is brought to management and maintenance, and operating cost is reduced.

Description

technical field [0001] The invention relates to a control method of a heat recovery system for a hospital building and a control method for a heat recovery composite energy system for a hospital building. Background technique [0002] At present, the ground source heat pump is used to directly prepare hot water or the air-cooled screw unit is used to prepare hot water. However, due to the defects of the current technology, the conventional unit cannot operate at a high temperature of 60°C for a long time, that is, the water temperature cannot reach the "Comprehensive" when preparing hot water. The water requirement of 60°C in the Hospital Design Code. If the temperature of the hot water is kept below 55°C for a long time, Legionella will continue to grow and cannot be killed, which will cause great harm to the users of the hospital building. Therefore, it is necessary to equip an electric heating system for auxiliary heating to increase the water temperature from 55°C Up to...

AI Technical Summary

Problems solved by technology

However, the demand for hot water in hospital buildings is large all the year round, and the large-area solar collectors often require too much investment on the roof. In addition, the uneven distribution of sunshine throughout the year makes it impossible to guarantee the water production. Therefore, it is also necessary to increase the electric auxiliary heating system, and the power consumption is huge.

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