Neuma Solenoid Valve NV-5521P-A2

06/14/2020

Super High Pressure Compressor

Super high pressure compressor proven to 700 bar using CO2 Concepts and Enhanced technologies

03/03/2021

Type selection calculation of servo motor

Confirmation of speed and encoder resolution. Conversion of load torque on motor shaft and calculation of acceleration and deceleration torque.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

07/24/2020

Introduction to screw refrigeration compressors and precautions for use (technology sharing)

　　Screw refrigeration compressors and piston refrigeration compressors are the same in terms of gas compression, and both belong to positive displacement compressors, that is to say, they both compress gas by volume changes.

08/18/2020

How much do you know about air conditioner motors

1. The principle of air conditioner compressor motor<br></br> 　　1, single-phase asynchronous motor<br></br> 　　 The single-phase compressor for air conditioner has two windings, namely the start winding and the running winding (main winding),

05/23/2025

How to select the thermal expansion valve？

1. The role and classification of expansion valves<br></br> Expansion valve is an important part of refrigeration system, generally installed between liquid storage cylinder and evaporator. The expansion valve causes the medium temperature and high pressure liquid refrigerant to become low temperature and low pressure wet vapor through its throttling, and then the refrigerant absorbs heat in the evaporator to achieve the cooling effect.

08/19/2020

Maintenance solutions for refrigeration system of constant temperature and humidity test chamber

In the maintenance practice of the constant temperature and humidity test chamber, once the capillary tube is blocked in the refrigeration system, the evaporator and the condenser tube and the connecting pipe are broken or welded

08/13/2020

Four types of safety protection measures for refrigeration compressors

As the most important component of the chiller, the motor for the refrigeration compressor plays an important role in the after-sales maintenance of the chiller. Moreover, the maintenance cost of the chiller compressor is relatively high.

07/27/2020

The working principle of screw unit and common failure analysis

1. Refrigeration cycle and pressure enthalpy diagram<br></br> 　　 The refrigeration cycle of a screw chiller can be represented by a pressure-enthalpy diagram. The main state points are shown in the diagram, which will be used in the following discussion.

08/07/2020

How to troubleshoot the icing of the evaporator of the air conditioner

Small split air conditioners often have icing on the indoor unit evaporator in summer. Why does it freeze and how to eliminate it? Here are the following:<br></br> 　　 1. Insufficient refrigerant<br></br>