Danfoss Compressor SM147A9YE

09/08/2020

Series of hazards caused by poor compressed air quality to production

Compressed air is an important source of power in industry. Compressed air is the second largest power source in industry after electricity. Compressed air contains harmful substances such as water, oil, and particulate impurities.

07/07/2020

Is the semi-closed screw compressor going up or down The views of these companies coincide

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

03/18/2024

What Is a Closed Loop System (Servo System / Servomechanism)?

As shown in the figures above, the closed-loop control system has a feedback device to feedback the position of the servo motor, but the open-loop control system does not.

09/21/2020

The history of industry

China is one of the first countries in the world to invent rolling bearings. According to archaeological relics and data, China’s oldest bearing with the prototype of a modern rolling bearing structure appeared in Xuejiaya Village, Yongji County, Shanxi Province from 221 to 207 BC (Qin Dynasty).

04/29/2022

What is A Contactor?

Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC). They are used in power, power distribution and electric field combination.

08/05/2020

Problems of evaporator defrosting and improvement methods

Although the evaporator is very useful, the evaporator defrosting electric heating tube burned out and the water collecting tray heating chamber burned out successively during use. So I will introduce the problems of the evaporator equipment and analyze the problems.

01/06/2025

What is the principle of the chiller shell and tube evaporator

The cold water shell and tube evaporator is made by expanding two-layer metal plates with high-pressure gas or by mechanical pressing. It can also be made of aluminum alloy die-casting.

08/16/2020

What factors will cause the cooling performance of water-cooled chillers to decline

Water-cooled chillers are especially suitable for places with abundant water resources. The operation is more stable. It has the characteristics of large single-unit cooling capacity and high cooling efficiency.

06/29/2020

What is the cause of compressor pipeline vibration

01/15/2021

The working environment of the air conditioner and the refrigerator freezer is different

The working environment of the air conditioner and the refrigerator freezer is different, which causes inconsistency in the variety of refrigerant used, and also affects the structure of the compressor.