Jiangsu Sujing Group Co., Ltd

Copeland Corporation

Jun You

Hao Pan

Xiaofei Song

Dan Xiong

Xiaoliang Tang

Qiang Kang

Huaming Guo

Yong Cao

A multi-parallel carbon dioxide heat pump control method based on target load control, wherein the multi-parallel carbon dioxide heat pump comprises a carbon dioxide circulation loop, a heat source pipeline and a hot water pipeline, and the control method comprises: adjusting the opening degree of an electronic expansion valve () according to the temperature of an inlet of the hot water pipeline, the temperature of an outlet of the hot water pipeline, the flow in the hot water pipeline and a target outlet temperature set by a user, such that the steady-state change of system pressure can be realized by adjusting the electronic expansion valve () on the basis of the fluctuation of parameters such as user side temperature and flow, thus a target outlet temperature change curve is rapidly and stably converged to a target value, and the outlet temperature can be rapidly stabilized.

Multi-parallel carbon dioxide heat pump control method based on target load control

A carbon dioxide overlapping type heating system and a control method therefor, in which the heating system includes a low-temperature-stage loop, high-temperature-stage loop and a heating loop, in which a temperature-stage compressor () and a high-temperature-stage compressor () are both variable-frequency compressors; and a water pump () is a variable-frequency water pump.

Carbon dioxide overlapping type heating system, and control method therefor

Inflatable raft

Water hammock

Inflatable pool

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Jiangsu, China

Jun You