Copeland Compressor ZX0250-PFJ-481

08/02/2020

It is not rigorous to select air conditioners based on the number of horses. The correct way is to look at this parameter!

Summer is coming soon, and it’s the season when air conditioners are selling well. When I go to the store to buy air conditioners, the first question I face is "how many horses to buy".

08/19/2020

Influencing factors of air entering the refrigeration system during cold storage operation

In addition to the refrigerant, there are inevitably some mixed gases in the fresh-keeping cold storage refrigeration system. The main component is air, and there are some gases that are decomposed by oil and refrigerant at high temperatures.

07/31/2020

HVAC people collect these data, better than ten years of work experience!

HVAC people, we know that the HVAC project contains more systems, the situation is complicated, and most of the pipelines are hidden in the tube wells, walls, and ceilings, so the design process is very complicated, but don’t worry, we can step on the predecessors’ Go forward on your shoulders!

07/29/2020

Briefly talk about scroll, screw, piston, centrifugal refrigeration compressor Piston refrigeration compressor

Piston refrigeration compressor<br></br> Piston type (ie, reciprocating) refrigeration compressors are widely used, but the displacement is not large. Generally, they are small and medium-sized compressors. The cooling capacity of general air-conditioning conditions is less than 300kW.

08/14/2020

Three commonly used monitoring indicators for refrigeration compressor lubricants

The lubricating oil used in the compressor is very critical, and the detection of lubricating oil and its replacement cycle are also closely related to the process control in the production process.

08/14/2020

What are the performance advantages of air-cooled chillers

The rapid development of the refrigeration industry has brought a lot of convenience to people's lives, especially in the chemical and medical fields, and the demand for chillers in the food field is higher.

09/10/2020

Air compressor lubricant replacement standard and market analysis

1. The selection criteria of air compressor oil 　　1) Oil selection: mineral oil, semi-synthetic oil, synthetic oil (synthetic oil is mainly PAO series) 　　2) Pour point: ≤-10℃ 　　3) Flash point: ≥180℃ 　　4) Acid value: 0.2 　　5) Performance requirements: good oxidation resistance, anti-emulsification, and less residual carbon

08/29/2022

How do Circuit Breakers Extinguish Electric Arc?

The arc is a free gas with high temperature and high conductivity, which not only has a great destructive effect on the contacts

06/29/2020

What is the cause of compressor pipeline vibration

08/24/2020

Six questions about air conditioning This is what novices really need!

1. Even though the heat pump air conditioner has automatic defrosting, why the heating effect below -5℃ is not good?