IDEC Relay RJ22S-CLR-A240

06/22/2020

Causes and judgement of centrifugal compressor surge

Causes and judgement of centrifugal compressor surge Causes of centrifugal compressor surge ①Flow<img src="{{media url=&quot;Causes_and_judgement_of_centrifugal_compressor_surge.jpg&quot;}}" alt="" /> Each centrifugal compressor corresponds to a curve between outlet pressure P and flow rate Q at different speeds n, as shown in Figure 2.

06/14/2020

Causes and harms of non-condensable gas produced by refrigeration system

Non-condensable gas refers to air, hydrogen, nitrogen, lubricating oil vapor, etc. mixed in the refrigeration system.

09/09/2020

Industrial bearing knowledge

Structural features 　　Bearing seat: The bearing seat is made of cast iron with heat sink on the surface. The mating surface of the bearing seat and the bearing bush is spherical. Bearing seats are divided into two types: insulated and non-insulated.

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;

06/25/2020

How to Hitachi Central Air Conditioning Compressor Maintenance Hitachi Central Air Conditioning Compressor【Detailed Explanation】

Hitachi central air-conditioning is a brand with good reputation and brand culture among central air-conditioning brands.The most indispensable thing for Hitachi central air-conditioning is Hitachi central air-conditioning compressor.If there is Hitachi central air-conditioning compressor, Hitachi central air-conditioning In order to work better, so for Hitachi central air-conditioning compressors, product maintenance of Hitachi central air-conditioning compressors is very important. The following editors will introduce to you-Hitachi central air-conditioning compressor product functions and maintenance.

07/01/2020

Several advantages of screw compressor

Several advantages of screw compressor In the cold storage installation, the choice of refrigerator is to choose to use screw machine or piston machine. The use of screw machines is gradually surpassing the share of the original piston machines.

08/05/2020

Why does the refrigeration compressor produce overheat protection What matters should be paid attention to in the use of overload protector

The working principle and classification of the overload protector. The overload protector of the compressor for air conditioning generally adopts a snap-type bimetallic protector, which consists of a heating wire,

06/29/2020

Compression ratio of American Copeland compressor

07/31/2020

What are the specific operation methods for maintenance of screw compressors in cold storage

Before the cold storage screw compressor must be overhauled, if possible, unload the slide valve to the "0" position, shut down normally, and cut off the power supply.

03/22/2022

How to Replace a Circuit Breaker?

A circuit breaker is a switching device connected to an electrical circuit that interrupts the current flow when it is excessive.