Ferraz Shawmut Fuse PC73UD95V11CTF

07/02/2024

Proportional Solenoid Valves: Working Principle, Types, Difference and Application, with Diagrams

A proportional solenoid valve is a device that controls the opening degree of a valve by changing the input current to the electromagnet (solenoid coil).

08/24/2020

What should I do before the air conditioner is turned on for the first time when I encounter the new crown virus in summer

In a live broadcast last night, Dr. Zhang Wenhong said that China’s epidemic prevention and control has done a good job. When people wear masks, the probability of contracting the new crown virus is very small. He said that when it is hot,

06/29/2020

How the compressor works

08/14/2020

The reason why the fan of air-cooled chiller does not run

In many areas where water sources are lacking, or air-cooled chillers for cooling and cooling of supporting machinery and equipment, after several years of use, such and other small failures may occur.

07/30/2020

11 common problems with refrigeration compressors, do you know these?

Impurities entering the friction surface of the moving parts of the compressor pump body will cause abnormal scratches and wear. Impurities entering the solenoid valve, expansion valve, control valve, capillary tube and stop valve in the refrigerator system will block the valve hole or make the valve close tightly. And fail.

01/05/2021

Screw compressors and expanders

Screw compressors and expanders From Nikola Stosic, ... Ahmed Kovacevic, in Positive Displacement Machines, 2019 Rotor proportions A general feature of screw compressors is that the pressure difference through them causes high rotor loads and 器2䀀
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06/14/2020

Working principle of inverter compressor

     The principle of inverter compressor inverter controller is to convert the alternating current in the power grid into a square wave pulse output. By adjusting the frequency of the square wave pulse (that is, adjusting the duty cycle), the speed of thﰸ2䀀
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09/10/2020

Summary Essentials of water treatment for central air-conditioning chillers

Looking at the management of central air-conditioning throughout the country, it is found that very few are well managed, and all have problems of one kind or another to varying degrees. The main problems are described as follows: 1. Problems caused by the unreasonable design of the design department

06/14/2020

Introduction of refrigeration compressor structure and working principle

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08/18/2020

How to judge whether the refrigeration effect of industrial refrigerators is good

The quality of industrial refrigerators can be judged by carefully understanding the cooling performance of the equipment. If during the long-term operation of the equipment, the operation safety and stability of the equipment is very high