Combined cooling and heating supply system and control method

Abstract

The invention relates to a combined cooling and heating supply system which comprises an air-conditioning water auxiliary electric heating device, a cooling fan, an air-conditioning water pump, a domestic hot water pump, at least two compressors and a domestic hot water auxiliary heating device and further comprises a control unit and a plurality of temperature sensors, wherein the temperature sensors are respectively used for measuring the actual value of the air-conditioning water return temperature and the value of the actual domestic hot water return temperature; when a material broken operating mode of the control unit is in an air-conditioning mode or a heating mode, the air-conditioning water pump is opened, and the compressors are opened or closed according to the actual value and the set value of the air-conditioning water return temperature; and when the operating mode is judged to be in a hot water mode, the domestic hot water pump is opened, and the compressors are opened or closed according to the value and the set value of the actual air-conditioning water return temperature. The invention also relates to a corresponding control method. With the combined cooling and heating supply system, the operation safety of equipment is ensured by controlling the opening or the closing of a high-power part in control equipment according to the air-conditioning water return temperature and domestic hot water return temperature as well as the set valve.

Description

technical field [0001] The present invention relates to the technical field of temperature regulation, and more specifically, to a combined cooling and heating system and a control method. Background technique [0002] Air conditioning in summer and domestic hot water throughout the year are the main part of energy consumption in southern my country (such as the hotel industry). At present, most of the heating systems in southern China use oil-fired boilers. With the rise of fuel prices, the operating costs have increased sharply, which has brought great economic pressure. big pollution. [0003] The combined cooling and heating system is a system based on heat pump technology that provides cooling, heating and domestic hot water for industrial buildings or civil buildings. Its energy-saving and environmental protection features have been generally recognized. According to statistics, compared with the "refrigerator + boiler" of conventional buildings, the combined cooling...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a combined cooling and heating system and a control method for the problem of excessive instantaneous current caused by multiple high-power components being turned on simultaneously in the above-mentioned combined cooling and heating system

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