A control method for an air-conditioning heat pump energy-saving system

Abstract

The invention discloses a control method for an air-conditioning heat pump energy-saving system, which includes a main compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, an auxiliary compressor, a first A throttling component, a second throttling component, and a third throttling component, wherein the second heat exchanger includes four interfaces a, b, c, and d, and the fourth heat exchanger includes i, j , m, and n four interfaces, characterized in that: interface a and interface b, interface c and interface d of the second heat exchanger are respectively communicated in the second heat exchanger, and the interface of the fourth heat exchanger i and interface j, interface m and interface n are respectively communicated in the fourth heat exchanger; the above-mentioned components are connected to form the main refrigeration system and the auxiliary refrigeration system; the connection composition of the main refrigeration system; by comparing the energy efficiency of the independent operation of the main refrigeration system The ratio and the energy efficiency ratio of the dual refrigeration system running at the same time, and then control the start and stop of the auxiliary refrigeration system and the self-check cycle of the system energy efficiency.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pump systems, in particular to a control method for an air-conditioning heat pump energy-saving system. Background technique [0002] Most of the existing multi-system air-conditioning heat pump systems are independent cooling or heating. Each system performs heat exchange with the heat source side and the heat medium on the use side. The capacity and energy efficiency of each refrigeration system are related to its configuration. The cooling capacity or heating capacity of the unit is The total cooling capacity or heating capacity of the system, there is no synergy or auxiliary effect between the cooling systems. Under severe ambient temperature, the capability of this system decays quickly and is prone to failure. [0003] In the existing cascade air-conditioning heat pump system, the main refrigeration system generally absorbs the heat of the auxiliary refrigeration system for op...

AI Technical Summary

Problems solved by technology

The main refrigeration system of the existing cascade air-conditioning heat pump system cannot operate independently, and the auxiliary refrigeration system needs to be activated at the same time to cool or heat normally. Although this type of system expands the scope of use of the refrigeration system and increases the output capacity, it may not necessarily improve the performance of the air conditioner. The energy efficiency ratio of the heat pump system, the energy efficiency ratio of the main refrigeration system and the auxiliary refrigeration system running at the same time may be lower than the energy efficiency ratio of the single cooling system under the same configuration

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