NEC Relay EE2-5NU

06/29/2020

Treatment of frost in crankcase when compressor head frost is serious

Treatment of frost in crankcase when compressor head frost is serious The frost on the cylinder head is caused by a large amount of wet steam or refrigerant sucked into the compressor. The main reasons for this situation are:

06/28/2020

Compressor-Hitachi 3p cold storage compressor

Compressor-Hitachi 3p cold storage compressor How to distinguish the big feet of Guangzhou Hitachi inverter fixed frequency compressors? The busier the production, the more problems. Recently, many customers are asking us if Guangzhou Hitachi Inverter Fixed Frequency Compressor still has big foot machine and small foot machine? How to distinguish?

01/08/2025

17 centrifugal compressor manufacturers,in the world. how many do you know

In the past decade, under the background of economic globalization and fierce competition, the centrifugal compressor manufacturing industry has also undergone continuous mergers and acquisitions and reorganizations. In 2000, the Japanese company EBARA pu�器2�䀀�������
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08/20/2020

Protection device for air-cooled chiller refrigeration compressor

What are the protective devices of the air-cooled chiller refrigeration compressor? Are all explanatory? Let's learn about it with okmarts.com editor today!

05/04/2023

What is an HVAC System?

There are many systems and components in a home or building that we take for granted, such as roofs, plumbing, and electricity. HVAC is the main system that probably will be most underrated: a massive heating and cooling system driven by a miniature thermostat.

08/14/2020

What are the noteworthy issues in central air conditioning design

1. Variable air volume ratio 　　 The air-conditioning system runs under partial load conditions most of the year, that is to say, the fans, ducts and air volume of the end of the variable air volume system are mostly between the maximum and minimum air volume limits.

06/14/2020

How to protect the refrigeration compressor, you must master the following knowledge

When the compressor is running, some abnormal conditions may occur, such as: the discharge pressure is too high, the suction pressure is too low, the oil pressure is insufficient, the motor is overheated, and excessive liquid enters the cylinder. If an ab器2䀀
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06/29/2020

How the compressor works

08/14/2020

Central air conditioning chiller water system and ventilation system cleaning method

The central air-conditioning ventilation system mainly includes air ducts, fresh air ducts, central air-conditioning wind cabinets, air outlets, air-sealing outlets, air handling units, and fan coils.

08/09/2020

Why is the application of frequency conversion technology slow in freezing and refrigeration

In household air conditioners, inverter technology has become popular. Compared with household air conditioners, the use of frequency conversion technology in refrigeration and refrigeration systems is of greater significance