Carrier Corporation

Lishan Wang

Stevo Mijanovic

Junqiang Fan

Liang Chang

Pei Sun

Fengcheng Sun

Futao Zhao

Jian Ni

Qing Lu

Ruello Rubino

Fabienne Peyaud

JeanPhilippe Goux

Olawale Adetona

Jingwei Sun

Robert Bitmead

A water circulation system for air conditioning system and a control method thereof, wherein the water circulation loop comprises: a main loop provided with air-conditioning indoor units, air-conditioning outdoor units and an actuator, and a bypass branch connected between upstream and downstream of the air-conditioning outdoor units and provided with a bypass valve; the control method comprises: Sstarting the water circulation system after receiving a start command; Sexecuting a PID control step after initialization and a first preset time period of the water circulation system; Sexecuting a feed forward control step when the operating states of the air-conditioning indoor units and/or the air-conditioning outdoor units are changed, and going back to execute the PID control step after a second preset time period; and Sexecuting a shutdown step of the water circulation system after receiving a shutdown command.

Water circulation system for air conditioning system and control method thereof

A system includes a heat pump configured to match a working heat transfer fluid temperature to a fluid temperature set-point, a fluid pump in fluid communication with the heat pump through the heat transfer fluid and configured to match the heat transfer fluid pressure/flow to a fluid pressure/flow set-point, at least one heat exchanger in fluid communication with the fluid pump, and a supervisory controller in signal communication with the at least one heat exchanger, the fluid pump, and the heat pump. The at least one heat exchanger includes a proportional valve and a return air temperature gauge configured to monitor return air temperature associated therewith. The supervisory controller is configured to vary the fluid temperature set-point and vary the fluid pressure/flow set-point based upon a position of the proportional valve and the return air temperature.

HVAC systems

A refrigerant vapor compression system and a method of controlling the system are adapted for controlling the distribution of cooling capacity between two or more temperature controlled zones.

Control of multiple zone refrigerant vapor compression systems

Growing community of inventors

Shanghai, China

Lishan Wang