DVP Vacuum Pump LB.18

08/12/2020

After reading this article, completely get rid of the phenomenon of centrifugal refrigeration compressor surge

Centrifugal refrigeration compressor is a speed compressor, which is a kind of impeller rotating machinery. It relies on the high-speed rotating impeller to do work on the gas to increase the gas pressure.

08/19/2020

How does the central air-conditioning project adjust and improve the wind power during operation

The central air-conditioning project is an overall system project, which contains many specifications such as technology, equipment, design, management, etc. A successful central

07/07/2020

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

07/28/2020

Simple and clear-graphic analysis of central air conditioning cleaning

Simple and clear-graphic analysis of central air conditioning cleaning<br></br> Three steps for central air conditioning cleaning: air outlet first, air return, focus on cleaning the filter<br></br> 1. Clean the air outlet<br></br> Adjust the swing leaf of the air outlet panel of the indoor unit to a level, and wipe the outer air outlet of the room with a clean towel. If you want to clean the inner louver, you need to remove the air outlet and clean it.

09/07/2020

How to choose a frequency conversion air compressor correctly

The rise in raw materials, the rise in energy costs, the rise in human resources, and the rise in various aspects have made China, a major producer country, less and less advantageous.

09/04/2020

In addition to reducing wear, mechanical lubrication has other functions

There are three types of lubrication: full-film lubrication, boundary lubrication, and mixed lubrication. They are in three different states, but they all rely on lubricating oil to lubricate and resist wear.

09/05/2020

What are the characteristics of the filter material glass fiber

As the most widely used filter material in current high-efficiency and sub-high-efficiency filters, glass fiber has the following characteristics:

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,

07/12/2020

What semi-hermetic screw compressors are customers willing to pay for?

In the early years, many people felt that semi-hermetic screw compressors are expensive and have high technical threshold. Without semi-hermetic piston compressors, they are cheap and easy to use and maintain, so they are a bit daunted.

01/05/2021

Refrigerant, compressor, expansion valve (flow control device), evaporator, condenser, pipes and tubes.

Refrigerant, compressor, expansion valve (flow control device), evaporator, condenser, pipes and tubes. Skematic of Compression Refrigeration System