Danfoss Compressor SH304B3AAE

08/14/2020

Ask, watch, listen, touch, test, etc. to know the refrigerator failure

Refrigerator failure inspection methods can generally be divided into asking, watching, listening, touching and testing. Through inspection, comprehensive analysis and judgment, gradually narrow the scope of the fault and find the point of failure.

09/06/2020

How to choose the first flange sealing surface form of the pressure vessel using flange connection

The flange welded by the connecting pipe on the pressure vessel cylinder to the flange is the first flange connected to the pressure vessel flange, and the flange that is matched with it is not counted as the first flange, and other flanges.

07/05/2020

Why is frost formed between the electronic expansion valve and the compressor

Why is frost formed between the electronic expansion valve and the compressor? A customer asked: The compressor is suddenly not cooling, and the electronic expansion valve is frosted to the compressor. Is there any relationship between the two before?

07/07/2020

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

09/10/2020

Existing problems in the promotion and application of water source heat pumps in my country

As a new type of cooling and heating method, water source heat pump should be quite mature and no problem from a technical point of view, especially from the point of view of heat pump units. However, considering China's national conditions and the promotion and application of water source heat pump cooling and heating as a whole system, there are still some problems:

08/13/2020

Refrigeration system 41 essay questions, too comprehensive!

1. What are the three necessary conditions for the safe operation of the refrigeration system? 　　Answer: (1) The refrigerant pressure in the system must not be abnormally high to avoid equipment rupture.

09/01/2020

The most complete version｜Basic theoretical knowledge of compressed air (1)

1. Compression purpose 　　The basic purpose of gas compression is to deliver gas at a pressure higher than the original pressure. The original pressure level may vary from a very low absolute pressure (a few thousandths of a kilogram) to several thousand kilograms;

06/29/2020

Time node of compressor refrigeration oil replacement

Time node of compressor refrigeration oil replacement 1. The long-term operation of the entire refrigeration system, after the initial maintenance, if there are no special circumstances, the compressor refrigeration oil should be replaced when the refrigeration system working time reaches 10,000-12,000 hours.

01/12/2021

Compressor Market 2020 Analysis and Opportunities During COVID-19 Pandemic

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09/07/2020

The air compressor lubricant is not up to standard

Air compressor lubricating oil is of great significance to the normal operation of screw air compressors, and it has a great impact on the reliability, economy and service life of the air compressor.