Omron PLC CP1L-L20DT-D

08/18/2020

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 supply openings, air sealing openings, air handling units, fan coils, etc.

10/29/2025

How to Defrost a Heat Pump: A Comprehensive Guide

Heat pumps are an essential component of HVAC systems that provide both heating and cooling solutions for homes and commercial buildings. However, like any other mechanical device, they require maintenance and care to operate efficiently and effectively.

09/10/2020

What factors affect the displacement of centrifugal compressors

1) The air filter is blocked or the resistance increases, causing the suction pressure of the compressor to decrease. When the outlet pressure is constant, the compressor pressure ratio is increased. According to the performance curve of the compressor, when the pressure ratio increases, the displacement will decrease;

03/02/2021

Related technical terms

1.Positioning or residual torque: when there is no current passing through the winding, the torque required to make the output shaft of the motor rotate. 2.Driver: an electrical control device used to run the stepping motor. This includes power supply, logic programmer, switching element and a variable frequency pulse source which determines the step rate. 3.Dynamic torque: the torque produced by the motor at a certain step rate. The dynamic torque can be expressed by PULL IN torque or PULL OUT torque.

08/20/2020

Winter cold resistance air conditioner, floor heating, radiator who is the most expensive

Time flies, it’s already November in a blink of an eye. I heard that this year is a cold winter. I don’t know what kind of heating method your home chooses. Today I will count the number with okmarts.com editor,

09/01/2020

In addition to air compressors, what is worse than the industrialization of hydrogen fuel cell vehicles

A few days ago, Hanbell Precision Machinery Company revealed that it had developed air compressor products for the fuel cell industry, which triggered heated discussions from all walks of life.

07/14/2020

Key factors for energy saving of screw air compressor

Key factors for energy saving of screw air compressor The rotor profile of the screw air compressor has a certain impact on energy saving. Before 2000, the screw air compressor was still in the growth period, and reliability was the main problem. At that time, the rotor profile development of screw air compressors made reliability the main goal.

09/10/2020

The basic points of choosing laboratory bench centrifuge

The desktop centrifuge uses the powerful centrifugal force generated by the high-speed rotation of the centrifuge rotor to accelerate the sedimentation speed of particles in the liquid, and separate substances with different sedimentation coefficients and buoyancy densities in the sample.

07/07/2020

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

09/07/2020

Explanation of common terms used in air compressor

1. Compressed media 　　 Why use air as the compression medium? Because the air is compressible, clear and transparent, and easy to transport (non-condensing), harmless, safe and inexhaustible. 1. Compressed media 　　 Why use air as the compression medium? Because the air is compressible, clear and transparent, and easy to transport (non-condensing), harmless, safe and inexhaustible.