Danfoss Compressor SH970B4AAD

08/17/2020

The difference between a single-head chiller and a double-head chiller

1. Single-stage refrigeration system 　　1. The single-stage refrigeration cycle refers to the four processes of compression, condensation, throttling,

08/14/2023

Are Window Heat Pumps Efficient? (Window Heat Pump: Everything You Need to Know)

Window heat pumps (heat pump window units, window unit heat pumps) are a popular heating and cooling solution for homes and apartments. They are affordable, easy to install, and can help save energy compared to other heating and cooling options.

08/17/2020

Detecting and repairing methods for problems in shell and tube condensers

Since the central air conditioner is a kind of refrigeration equipment, it must be equipped with a condenser, and most of them are shell and tube condensers. When the device has been used for a long time, some inconveniences may occur.

07/07/2020

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

03/08/2021

AC servo driver wiring precautions

For signal line and encoder input line, please use shielded wire. Wiring length: the length of signal line from NC to AC servo driver is less than 3m, and the length of input line from AC driver to encoder is less than 20m. The ground wire should be thick wire as far as possible. According to the third grounding standard (grounding resistance < 100 Ω), one point grounding method should be adopted to connect the ground wire. If the motor and the machine tool are insulated, the motor should be grounded.

07/19/2020

Why does the scroll refrigeration compressor reverse? What about reversal?

We know that the operation of the internal compression structure of the refrigeration compressor has a fixed direction. First of all, we need to make it clear: the occurrence of reverse rotation must be unfavorable for the refrigeration compressor.

03/28/2023

What is a Screw Refrigeration Compressor

Screw compressors are mainly used in air compression and medium-sized refrigeration / air conditioning systems. Screw compressors can be divided into screw air compressors, screw refrigeration compressors and process gas screw compressors.

08/20/2020

What is a screw compressor economizer

As we all know, in fact, in many refrigeration systems, where screw compressors are used, economizers must be matched. So do you know why screw compressors use economizers? How can economizers play its greatest role?

08/20/2020

Taboos for installing air conditioning and refrigeration pipes

Air-conditioning refrigeration pipes are used as auxiliary equipment in air-conditioning installation, but their importance cannot be ignored. If all relevant components have been

09/09/2020

The scope of use of screw compressors

1. Screw air compressor: Mainly used in the field of aerodynamics to drive various pneumatic tools. Due to the development of oil and gas separation and gas purification technology, it is increasingly used in applications with very high air quality requirements.