Wuxi Guanya Refrigeration Technology co., ltd

How To Choose the Ultra Low Temperature Recirculating Chiller Expansion Valve?

Selection and installation of the expansion valve for ultra low temperature recirculating chillers: the selection of expansion valve plays an important role in the performance of the ultra low temperature recirculating chiller refrigeration system. The correct choice of expansion valve will maximize the use of the evaporator and make the evaporator always be matched to the heat load.

First, the selection of thermal expansion valve.

In the ultra low temperature recirculating chiller refrigeration system, the selection and installation of the expansion valve is very important. Only the correct selection and installation can ensure the normal operation of the unit. Therefore, when selecting the expansion valve, we can use the appropriate size of the thermal expansion valve according to the size of the evaporator load and the evaporating temperature. The capacity of the commonly used expansion valve is about 20% larger than the evaporator heat load. For small chiller refrigeration systems, gas-filled thermal expansion valves are generally used, and medium-sized ultra-low temperature circulating chiller refrigeration systems mostly use adsorption-filled or mixed-filled expansion valves.

Second, the expansion valve installation.

1. The chiller expansion valve is installed in front of the evaporator and is usually installed in a vertical position. Considering the ease of installation and maintenance, the cooling loss is small and should be as close as possible to the inlet of the evaporator.

2. The working condition of the expansion valve for the ultra low temperature recirculating chiller has a direct relationship with the installation position of the temperature sensing package. Because the expansion valve completely adjusts the opening size of the expansion valve by the temperature change of the temperature sensing package. The temperature sensor package is installed on the pipe at the outlet of the chiller evaporator. As the evaporator outlet pipe grows, its superheat gradually increases. Therefore, the position of the expansion valve temperature sensing package is directly related to the amount of fluid supplied from the expansion valve.
Related News
Related Products
  • SLJ -110℃~-150℃

    SLJ -110℃~-150℃

    January 11, 2018Temperature ranges from - 5 ~ - 150 ℃, can meet different temperature; Adopt environmental protection refrigerants; Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK.view
  • Single Fluid Heat Transfer System SR

    Single Fluid Heat Transfer System SR

    April 10, 2018Working temperature range from -25℃to 200℃, other temperature range need to set to the widest temperature range(-50℃to 250℃) Centralized control of 2~20 reactors, each reactor's and jacket temperature can be set independently. One system control multipleview
  • Reactor Temperature System ZLF

    Reactor Temperature System ZLF

    April 10, 2018A set of cooling heat exchanger, heat exchanger, through proportional adjusting valve control cold heat into the heat exchanger, then through the uniform medium input to the reactor jacketed to do heat exchange and temp. Control, system has inside expansiview
  • LT -45℃~30℃

    LT -45℃~30℃

    April 10, 2018Low Temperature Cooling Chiller LT model: LT-5018N,LT-5040N,LT-5062N,LT-5090N,LT-50A1N,LT-50A2N;view
  • IC Test Cooling Chiller -45℃~250℃

    IC Test Cooling Chiller -45℃~250℃

    February 28, 2019-45℃~+200℃ 2.5kW~25kW ±0.3℃view
  • Flash EMMC Thermal Head  -85℃~200℃

    Flash EMMC Thermal Head -85℃~200℃

    February 28, 2019Temperature control range:-85 ° C ~ 200 ° CPower range:2.5kW~25kWTemperature control accuracy:±0.3°CModelTES-8525WTES-8555WTES-85A10WTES-85A15WTES-85A25WTemp. Range-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃Heating P...view
Contact US
Tel: + 86 18751545184
E-mail: sales@cnzlj.com
Add: No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province, China
code chat