ALPHA VFD Frequency Converter ALPHA3300-3045P

07/24/2020

Comparison of working principle of single screw and twin screw refrigeration compressors

Twin-screw refrigeration compressor is an energy-adjustable oil-injected compressor. Its three continuous processes of inhalation, compression and exhaust are realized by periodic volume changes when a pair of intermeshing female and male rotors rotate.

06/14/2020

Danfoss cocuses on providing energy efficient, sustainable and smart refrigeration compressors for a varied range of commercial applications such as cold rooms

09/23/2020

Application of DCS system in anti-surge control system of air separation compressor

Keywords: DCS system, air separation compressor, anti-surge control system Preface 　　 The 6000m3/h air separation plant of Xilin Iron and Steel Company was completed in May 2001 by Hangzhou Oxygen Concentrator Group Company. The factory design was designed by Beijing Iron and Steel Design Institute. It was successfully put into operation on September 2, 2001, and it took more than half a year to run. It shows that the unit is operating stably, and all indicators have reached or exceeded the design value. The entire control system uses Honeywell’s TDC3000 and two GUS stations.

08/20/2020

Which is cost-effective to rent a cold storage or build a cold storage yourself

Which is cost-effective to rent a cold storage or build a cold storage yourself? On this issue, we mainly have the following considerations:

09/10/2020

Lubrication characteristics and requirements of mobile air compressors

1. The characteristics of the mobile air compressor are: (1) The mobile air compressor should be easy to move frequently, the working conditions are changeable, and the load changes greatly. (2) Mobile air compressors are mostly heavy-duty, medium-speed or low-speed transmission, and most require frequent starting and often withstand shock loads;

08/14/2020

Trouble shooting and correct selection method for thermal expansion valve debugging

As we all know, the thermal expansion valve is one of the four major components in the refrigeration system. It is responsible for reducing the refrigerant from the condensing pressure to the evaporating pressure in the system

01/14/2021

Do you know these 10 questions about air conditioning?

Fluorine deficiency: If the air conditioner in your home is an old-fashioned air conditioner that has been used for a long time, it may be because the Freon refrigerant in the air conditioner is gone, and you can continue to use it only by adding Freon. 器2䀀
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08/17/2020

How to recover refrigerant

1. How to recover the refrigerant from the industrial chiller to the accumulator? 　　The specific operation steps for recovering the refrigerant from the industrial chiller to the accumulator are:

08/21/2020

Tips on Air Conditioning Extension Tube

Many friends know that if the air conditioner is installed, there will be an extra charge, and this fee does not seem to be low, but you don’t know that after the air conditioner connecting pipe is extended to a certain distance,

06/14/2020

Centrifugal refrigeration compressors are mainly used for air conditioning in large buildings, Less demand.

Centrifugal refrigeration compressors are mainly used for air conditioning in large buildings, Less demand. In recent years, large-scale infrastructure projects have been launched, and centrifugal refrigeration compressors have become a hot spot of concerﰸ2䀀
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