Yaskawa VFD Frequency Converter CIMR-PW4A0007FAA

06/14/2020

Carry out special inspection of centralized air conditioning and ventilation systems

Carry out special inspection of centralized air conditioning and ventilation systems Recently, the Keqiao District Sanitary Supervision Department has carried out special inspections

07/30/2020

What are the cooling methods you know Let's talk about it all!

Principle: In the vapor compression refrigeration cycle system, the compressor sucks in low-temperature and low-pressure refrigerant vapor from the evaporator, is adiabaticly compressed by the compressor to

07/26/2020

Repair method of screw refrigeration compressor wear

The application of screw refrigeration compressors is becoming more and more common, and some of them have entered a period of frequent failures. When the abrasion of the female and male rotors, body, and exhaust end seat of the refrigeration compressor reaches above 0.65rnm, vibration will occur when the refrigeration compressor is running, the sound is abnormal, the cooling capacity is reduced, and the compressor cannot work normally.

07/26/2020

Precautions for using R410A refrigerant in air conditioner

The types of refrigerating machine oil (lubricating oil) are roughly divided into mineral oil and synthetic oil according to the use of refrigerant. The lubricating oil of R22 refrigerant currently used is basically mineral oil. R410A refrigerant uses synthetic oil.

07/10/2020

Working principle diagram and precautions of screw air compressor

Working principle diagram and precautions of screw air compressor Working principle diagram of twin screw air compressor 1. Basic structure and working principle

06/29/2020

Several causes of compressor burning

03/05/2021

What is servo drive?

As one of the importanttechnologies of CNC machine tools, industrial robots and other industrial machinery control, servo drive technology is widely concerned at home and abroad. In the last decade of the 20th century, the development of microprocessor (especially DSP), power electronics, network technology and control technology havelaid a good foundation for the further development of servo drive technology.

09/10/2020

Ethylene plant training materials

Chapter One 　Typical Process of Ethylene Plant The first section 　 sequence separation process Section 2 Front deethane process Section 3 Front depropanization process Section 4 Low investment separation process Section 5 Progressive separation process Section 6 Oil absorption and separation process Section 7 Comparison of six separation processes

07/01/2022

Types of Check Valve

Depending on the design of the check valve, they will operate slightly differently. The most common check valve is a spring loaded in-line check valve, however, we will discuss multiple types below.

06/14/2020

Prerequisites and principles for adjustment of several operations in the refrigeration system of cold storage

Prerequisites and principles for adjustment of several operations in the refrigeration system of cold storage