Danfoss Compressor 120U2903

08/24/2020

HVAC knowledge

1. The expansion water tank is used in the heating system to store the expansion water after the system is heated, and plays the role of exhaust in the natural circulation up-and-down system.

06/14/2020

Nine refrigerant leakage parts and solutions

There are many welding ports on the left and right sides of the evaporator, and there may be more leakage points. The leakage of the newly installed air conditioner is mainly due to the poor welding technology of the employees of the air conditioner prod器2䀀
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03/11/2022

Why are Your Refrigerating Machine and Compressor Making Abnormal Noises?

The operation sound of the refrigerating machine is unavoidable. The fan rotating, fan blade rubbing with the air would make the noise that is normal.

06/14/2020

Copeland compressors in the United States (notes)

Copeland compressors in the United States (notes) Heat pump type-excess liquid return test

08/21/2020

Ground source heat pump brand selection needs to be careful

In recent years, with the improvement of people's living standards and increased awareness of health and environmental protection, the ground source heat pump industry has become the current sunrise industry.

07/07/2020

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

08/09/2020

Common fault solutions and improvement measures of air energy heat pump compressor

The air energy heat pump system is widely used in hot water, heating, drying and other fields. Its characteristic is that most of the heat energy comes from the low temperature heat energy in the air energy,

08/20/2020

Installation and placement conditions of cooling tower of thermal shock tester

Let's learn about the installation and placement conditions of the cooling tower of the thermal shock tester with the editor of okmarts.com! 1. The ground is flat and well ventilated;

08/24/2020

Refrigeration principles of refrigerators and air conditioners

Is the cooling principle of refrigerator and air conditioner the same? 　　 Refrigerator is a kind of refrigeration equipment that keeps a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state.

09/06/2020

Selection and verification of pressure vessel safety accessories

1 Pressure vessel and its safety accessories 　　 Pressure vessel is a closed device, not only carries a certain pressure, but usually contains gas or liquid inside, and metal and non-metal materials are common. There is a large pressure difference between the inside and outside