Danfoss Compressor SH281B4ACT

10/02/2025

Variable-speed technology has become an essential component in the effort to improve HVAC equipment efficiency.

Variable-speed technology has become an essential component in the effort to improve HVAC equipment efficiency. The term “variable-speed” applies to two different components in an air conditioning or heat pump system: the blower motor and the compressor. 器2䀀
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09/21/2020

Development Trend of Domestic Screw Refrigeration Compressor

Since the advent of screw compressors in 1934, after decades of technological improvement, screw compressors have been widely used, especially in refrigeration.

07/23/2020

Judgment and repair method of refrigeration compressor jam

First use the AC current gear of the multimeter, clamp the N-terminal lead of the outdoor unit with the clamp head, measure the outdoor unit current, when the compressor is powered on, the measured current is about 65A, which is much larger than the starting current, indicating that the compressor may be stuck Can not start.<br></br>

09/03/2020

Petrochemical compressor development

Petrochemical compressor development 　　First, since the 1970s, centrifugal compressors have developed rapidly. In the development of a domestically produced 300,000-ton synthetic ammonia plant in a chemical complex, some plants in Shanghai have developed process air compressors, synthesis gas compressors, ammonia refrigeration compressors, and supporting drive steam turbines.

07/07/2020

Is the semi-closed screw compressor going up or down The views of these companies coincide

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

05/22/2023

Why is My AC Not Cooling? (Detailed Reasons and Solutions)

The air conditioner is a household appliance that we mostly use in the summer, and occasionally we encounter the problem of the air conditioner not cooling.

02/21/2024

Wall Hung Condensing Boilers: Everything You Need to Know

Wall-hung boilers (for radiator heating or floor heating and water heating) have become the first choice of heating equipment for more and more families.

08/13/2020

Why the air energy heat pump does not heat

It is a common phenomenon that air energy heat pumps do not produce heat. When air energy heat pumps were used in the winter of previous years, the water temperature would be insufficient.

08/09/2023

Why is My Heat Pump Icing Up? Understanding the Causes and Solutions

Heat pumps are an essential household appliance that is used to regulate room temperature all year round. They are designed to extract heat from the ground or air outside and transfer it inside the home to keep it warm during the winter and cool during the summer.

07/07/2020

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