Hitachi Compressor G503DH-80D2

07/24/2020

Central air conditioning water system cleaning method, process and case

When the central air-conditioning circulating water system runs for a long time, some salt deposits, corrosive debris, and biological sludge are often produced in the system. These substances will affect the heat transfer

08/09/2020

Regulations for the adoption of heat recovery chillers in refrigeration stations

1. For buildings that require both cooling and heating, heat recovery chillers can be selected when the technical and economic analysis is reasonable. By recovering the heat lost by the cooling water, the unit is used for air conditioning hot water or hot air preheating,

08/02/2020

How to choose the right refrigerant for cold storage

The nature of the refrigerant will directly affect the type, structure, size and operating characteristics of the refrigerator, as well as the form, equipment structure, and economic and technical performance of the refrigeration cycle.

08/19/2020

Causes of abnormal cold storage temperature

In daily life, there are many problems with abnormal temperature in cold storage. Common common problems are usually: 1. No cooling or poor cooling effect; 2. Slow cooling speed; 3. The cooling temperature stays high and cannot drop;

06/29/2020

How the compressor works

06/14/2020

Problems and case analysis of electronic expansion valve and four-way valve

Problems and case analysis of electronic expansion valve and four-way valve 1. The problem of electronic expansion valve 1 　　Identify the quality of electronic expansion valve: 　　Step one (see): Whether the wiring is plugged in place and whether the c器2䀀
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09/06/2020

What are the requirements of modern industry for oil-free air compressors

After the air is mechanically compressed, it becomes compressed air. The equipment used to produce compressed air is usually called an air compressor. Compressed air is an indispensable pneumatic energy source in people's production and life.

01/05/2021

4 Common Refrigerator Compressor Problems You Need to Solve Fast

4 Common Refrigerator Compressor Problems You Need to Solve Fast A compressor is a vital part of the refrigerator, so it can be frustrating once breaks at inconvenient times. It’s not always easy to detect if the compressor has a problem, and it often ta器2䀀
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09/07/2020

The energy saving of air compressors starts with the gas tank and pipeline!

Energy saving principle 　　 After the compressed air is discharged from the compressor, it needs to be transported to the application place through the air tank and pipeline. In the field of use, there are problems with gas storage tanks and pipelines

08/11/2020

Common practice of oil return design in refrigeration system

When the condenser is installed higher than the compressor, a U-shaped bend is required at the intake pipe of the condenser to prevent oil from returning to the exhaust side of the compressor during shutdown and also help prevent liquid refrigerant from the condenser