BPJ Bearing 6015ZZ/P4

09/04/2020

How often is the physical examination of special equipment Here are 21 questions to help you solve your doubts

What is special equipment? 　　Special equipment is a general term for equipment and facilities that are life-safe and dangerous.

07/20/2020

What are the requirements for refrigeration compressor installation

What are the general requirements for refrigeration compressor installation? The editor will introduce it to you, and hope to help everyone! 1. Collect the original materials and technical documents of the refrigeration device and system design, and be familiar with all the contents.

12/23/2022

What is an Erbium Doped Fiber Amplifier?

The erbium optical fiber amplifier (EDFA) is an optical amplifier made of optical fiber doped with erbium.

06/10/2024

Hydraulic System Components, Working Principle, Pros＆Cons, Application, with Diagrams

Hydraulic systems are widely used. Why do we use them? What is the working principle of them?

08/05/2020

Why does the heating system lose water

1. Why does the compressor produce overheat protection? 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,When the pipeline is filled with water, a large amount of dissolved oxygen is mixed into it to cause corrosion; the insulation shell of the directly buried pipeline is disconnected and is subject to long-term soaking of groundwater to cause corrosion.

08/18/2020

How much do you know about air conditioner motors

1. The principle of air conditioner compressor motor<br></br> 　　1, single-phase asynchronous motor<br></br> 　　 The single-phase compressor for air conditioner has two windings, namely the start winding and the running winding (main winding),

07/07/2020

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

09/09/2020

Pressure swing adsorption principle of adsorption dryer

Pressure swing adsorption (PSA for short) is a new gas separation technology. Taking adsorbent molecular sieve as an example, its principle is to separate the gas mixture by using the difference in the "adsorption" performance of molecular sieve on different gas molecules.

09/01/2020

The most complete version｜Basic theoretical knowledge of compressed air (2)

Six, compression and compression ratio 　　1, compression 　　 Adiabatic compression is a compression process in which gas heat is not significantly transferred or transferred during the compression process.

08/13/2020

Will the air conditioner ignite spontaneously Expert of the Department of Fire Engineering More than ten reasons can cause spontaneous combustion

Recently, a well-known media person suffocated to death due to spontaneous combustion of air conditioners and released a large amount of poisonous gas. As the summer heats up, "air conditioning spontaneous combustion" has quickly become a hot spot for thePﰨ2䀀