Endress Hauser Transmitter PMC71-ABA1H3B4AAA

08/19/2020

How to use refrigerant in industrial refrigerator

Refrigerant is an indispensable part of industrial refrigerators, and it acts like blood in the human body. Since various refrigerants have different physical and chemical properties, they have different saturation pressures at different temperatures.

06/29/2020

Compressor oil change index

Compressor oil change index The general indicators for determining whether the refrigeration oil can continue to be used are: appearance, viscosity, acid value, moisture, pour point, flash point, compressive strength, copper corrosion, mechanical impurities and insolubles.

06/14/2020

What does the air conditioning cooling capacity mean

In addition to the different size of the air conditioner, the important indicator is the cooling capacity. The cooling capacity refers to the total amount of heat removed from the confined space, room or area per unit time when the air conditioner is perf器2䀀
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08/05/2020

Basic knowledge of air source heat pump at a glance

1. What is a heat pump?<br></br> 　　 Heat pump is not a water pump, or even a pump, but a complete set of equipment. The English name of heat pump, heatpump, has 2 definitions:

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

04/29/2025

Difference between AC, DC and EC Fans

AC fans, DC fans and EC fans are classified according to their power supply type and motor type respectively. They differ in drive method, performance and application range.

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).

09/03/2020

Petrochemical compressor development

Petrochemical compressor development 　　First, since the 1970s, centrifugal compressors have developed rapidly. In the development of a domestically produced 300,000-ton synthetic ammonia plant in a chemical complex, some plants in Shanghai have developed process air compressors, synthesis gas compressors, ammonia refrigeration compressors, and supporting drive steam turbines.

09/08/2020

21 problems that should be paid attention to when using air compressor inverter

Improper use of the inverter will not only fail to give full play to its excellent functions, but may also damage the inverter and its equipment, or cause interference, etc. Therefore, the following matters should be noted during use:

06/14/2020

Which air cooling effect is better than air conditioning

The air energy heat pump cooling and heating machine is the same as the air conditioner, which can both heat and cool. The heating function is the strength of the air energy cooling and heating machine, and the effect is naturally needless to say. But wha器2䀀
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