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07/07/2020

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

08/19/2020

Teach you how to understand the data meaning of the high and low pressure meters in the chiller

The general high and low pressure meter of chiller refers to the refrigerant pressure of the refrigeration system, which is mainly used to monitor the operation of the system and facilitate after-sales maintenance.

08/24/2020

The principle of dehumidification is very different from dehumidifiers and air conditioners

Spring and summer are always humid and humid seasons in the south, especially in the rainy season. The whole house feels moldy. In the north, house-type problems can easily cause some rooms to be humid.

09/07/2020

What are the advantages and characteristics of power frequency screw air compressors

What are the advantages and characteristics of power frequency screw air compressors? 　　 Power frequency screw air compressor adopts high-efficiency host The industrial frequency screw air compressor adopts the industry-leading screw main engine,

08/24/2020

Where is the safety boundary of cold chain logistics what are the risks How to ensure safety

Following the detection of the new crown virus from the cutting board of imported salmon in Beijing Xinfadi Market, the topic of how the virus is transmitted has become a focus.

06/25/2020

Classification of air-conditioning compressors

The air-conditioning compressor plays the role of compressing and driving the refrigerant in the air-conditioning refrigerant circuit. The working circuit is divided into an evaporation area (low pressure area) and a condensation area (high pressure area). The indoor unit and outdoor unit belong to the high-pressure or low-pressure area (depending on the working state), and the compressor is generally installed in the outdoor unit.

08/15/2020

Failure Forms and Preventive Measures of Parts of Shell and Tube Heat Exchanger

1. The structure of the shell and tube heat exchanger<br></br> The shell and tube heat exchanger is a traditional and most widely used heat exchange equipment. Because it has a strong structure and can be made of a variety of materials

08/21/2020

Common problems and solutions for ice making machines

1. Common problems and solutions of ice maker 　　 1. The compressor is working but not cooling. 　　 Reason: The refrigerant leaks or the two-way solenoid valve is damaged and it is not closed tightly.

02/08/2023

Pros and Cons of Pneumatic, Electric and Hydraulic Actuators

The actuator used in the control valve are nothing more than pneumatic, electric, and hydraulic (electro-hydraulic) type.

08/14/2020

The difference between oil cooler and other coolers

An oil cooler is a heat exchanger that uses air to cool hot fluid. Like other coolers, rust scale will appear. The rust scale appears mainly because the cooling water contains a large amount of calcium, magnesium ions and acid carbonates.