Hitachi Compressor 404DH-38D2

08/05/2020

How does the air conditioner collect fluoride

1. Method: The method of collecting fluorine should be correct. Under the state of turning on and cooling, open the covers of the two connecting pipe valves of the outdoor unit with a wrench, use 5 hexagonal wrenches,

06/14/2020

Refrigeration unit in artificial environment simulation laboratory

The artificial environment simulation laboratory can simulate the temperature and humidity environment, as well as the climatic environment of rainfall, snowfall, sunshine, wind, sand and dust.

06/05/2025

How to choose screw air compressor with or without oil

In screw air compressors, they are classified according to the type of lubrication, which are mainly divided into two types: oil lubrication and no oil. Literally, it is easy to understand whether or not air compressor lubricants are needed.

08/30/2020

Current situation and application of compressor rotor materials

With the development of science and technology, the rotor materials of screw compressors and centrifugal compressors have made great progress and changes nowadays. The author has done some research experiments on this, and this article briefly talks about it.

06/14/2020

Is it necessary to install the fresh air system recommended during decoration Where are the people who have been eating ash for many years but are secretly happy this year

Is it necessary to install the fresh air system recommended during decoration Where are the people who have been eating ash for many years but are secretly happy this year Is it necessary for ordinary families to install fresh air system?

06/14/2020

Heating principle

Heating principle

07/24/2020

Air conditioning system fault diagnosis guide (part 2)

This article continues from the previous article: A Guide to Fault Diagnosis of Air Conditioning System (Part 1) During the intense heat, air-conditioning maintains the "life" of some people. People are afraid of heat that they can't live without air-conditioning.

08/15/2020

Characteristics of oil cooler and attention issues

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.

06/14/2020

The selection of the central air conditioner depends not only on the brand, the internal compressor is also very important, several types of compressors commonly used in central air conditioning;

The selection of the central air conditioner depends not only on the brand, the internal compressor is also very important, several types of compressors commonly used in central air conditioning; 1. Classification of common compressors 1. Single rotor器2䀀
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06/29/2020

What is the cause of compressor pipeline vibration