Protechnic Fan MGT9212UB-R25

08/11/2020

Refrigerant classification and selection requirements

Refrigerants are also called refrigeration working fluids, commonly known as refrigerants in some areas in the south. It is a working substance that continuously circulates in the refrigeration system and realizes refrigeration through its own state changes.

08/16/2020

Correct disposal method after leakage of ammonia refrigeration system

1. Treatment method of ammonia leakage accident in ammonia compressor 1. After an ammonia leakage accident occurs in the ammonia compressor, first cut off the compressor power supply and immediately close the exhaust valve and suction valve (two-stage

08/11/2020

How to effectively reduce the noise of the fresh air system

During the installation and construction of the fresh air system, the fresh air system engineers often encounter that after the fresh air system is installed, the wind speed in the bedroom or study room is too high and the noise is too large

08/20/2020

Common auxiliary accessories and refrigeration methods for industrial chillers

Commonly used auxiliary accessories for chillers include water flow switch, pressure controller, pressure difference controller, temperature controller and solenoid valve, as well as a brief introduction of three cooling methods,

08/07/2020

Does the floor heating temperature always fail to rise Maybe this can be solved

At present, floor heating has been widely used and applied in many places in our country. However, many owners report that the temperature of their own water and floor heating in winter is not very ideal

08/16/2020

Analysis on the noise of air-cooled chillers

When many users use air-cooled chillers, they usually have no noise problems because they have gone through a comprehensive test at the beginning. However, with long-term use and the user’s failure to maintain it carefully,

05/26/2025

Mitsubishi Heavy Industries-Haier AC Error Codes

When there is a problem with your Mitsubishi Heavy Industries-Haier air conditioning, you need to know the meaning of the fault code displayed on the thermostat and how to troubleshoot it.

07/07/2020

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

06/14/2020

Commercial central air-conditioning and industrial refrigeration industries are downstream industries of screw refrigeration compressors

Chinese air compressor market has the largest proportion of piston air compressors Chinese air compressors started in the late 1950s and were established and developed after the founding of New China (1949). After roughly digesting and absorbing the prodﰸ2䀀
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06/14/2020

HVAC people collect these data, better than ten years of work experience!

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