FEMA Switch DNS10-203

07/23/2020

Shallow oil return method of parallel refrigeration compressors

Compressor oil return is one of the key problems in piping design, and it is also a troublesome problem that must be solved; the solubility of refrigerant and lubricating oil should be miscible, slightly soluble, and miscible at high pressure and separate at low pressure. ; The problem of oil return often occurs in the exhaust pipe and return pipe. Today, the analysis is the oil return problem of parallel compressors

09/01/2020

Integrity and Self-discipline Voluntary Certification

Recently, two major events affecting the entire compressor industry have occurred one after another in the industry: First, the annual ComVac ASIA (ComVac ASIA) was successfully held in Shanghai.

08/16/2020

Air energy heat pump heating, what installation and use details need to be paid attention to

In the recent period, the term "coal to electricity" has frequently appeared in the vision of the broad masses of people. The reason is that many areas in Beijing, including Chaoyang, Haidian, and Tongzhou, have announced the results of the "coal-to-electricity" winning bid.

09/23/2020

Talking about screw compressor

It has become an inevitable trend to use highly reliable screw compressors to replace piston compressors with many wearing parts and poor reliability. Japan's screw compressors accounted for only 27% in 1976, and rose to 85% in 1985; the current market share of screw compressors in western developed countries is about 80%, and it maintains an upward trend.

05/14/2025

Troubleshooting a Refrigerator Compressor Running But Not Cooling: A Comprehensive Guide

The refrigerator is an essential appliance in every home, keeping our perishable food items fresh and safe for consumption. However, when the refrigerator compressor is running but the refrigerator is not cooling

09/23/2020

Air compressor classification, working principle and air compressor selection

Air compressor classification, working principle and air compressor selection The air compressor is the main body of the air source device. It is a device that converts the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy, and is a pressure generating device for compressed air.

01/07/2023

What is a Color Coded Inductor Coil?

Similar to color-ring resistors, color coded inductor solenoid coils use colors to represent different numbers, which can indicate the inductance of the inductor.

07/11/2020

Screw air compressor maintenance

Screw air compressor maintenance 1. Air intake filter The air filter is a component that filters out air dust and dirt. The filtered clean air enters the screw rotor compression chamber to be compressed.

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

09/10/2020

Air compressor valve selection steps and selection examples

The valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of reverse flow, stabilization, diversion or overflow and pressure relief.