Energy efficiency ratio: The energy efficiency ratio of an air conditioner is the ratio of cooling capacity (heating capacity) to operating power. That is, the mathematical expressions of EER and COP: EER=cooling capacity/cooling power consumption. COP=heating capacity/heating power consumption.

Polyurethane (PU) is the abbreviation of polyurethane, which is formed by addition polymerization of polyisocyanate and polyhydroxy polymer, and contains many repeating urethane segments (-NHCOO-) in the main polymer chain.

First, find out the air duct elevation according to the design requirements and refer to the civil engineering datum line.

Second, make hangers and high hanging points.

Ventilation, the "V" in HVAC, is often ignored. We pay great attention to heating and air-conditioning systems - their operation is critical to comfort, and heating and cooling can constitute an important part of the building utility bill. This can encourage people to reduce ventilation as much as possible, because the outdoor air must reach the indoor temperature and humidity level, whether in hot or cold weather, this is an expensive suggestion.

Design and selection of main equipment
1. Selection and calculation of fan coil units
2. Selection and calculation of fresh air air conditioning box
3. Selection calculation of combined air handling unit

Composite air duct is a kind of pipe that plays a role in air supply. It is different from traditional pipes. It does not produce harmful substances either during production or during production and installation.

Cooling Tower: Special equipment for cooling water by means of air. Generally installed on the top of the building. It is used in refrigeration, electric power, chemical industry and many other industries.

What is a fresh air system?

The fresh air system is an independent air treatment system composed of an air supply system and an exhaust system. It is divided into two types: ducted fresh air system and ductless fresh air system.

Composite air duct, represented by rubber plastic composite air duct, is a rubber plastic composite air duct system made of rubber plastic composite thermal insulation materials, which can comprehensively replace traditional air ducts, air valves, tuyeres, static pressure boxes, and thermal insulation materials in the air delivery system of air conditioners.

Central air-conditioning: Central air-conditioning is an air-conditioning system that controls different rooms by means of a main unit connecting multiple ends through air ducts or cold and hot water pipes, so as to achieve the purpose of indoor air conditioning.

3. Calculation method of air distribution

The task of airflow organization calculation is to select the form of airflow distribution, determine the form, number and size of air supply outlets, and make the wind speed and temperature difference in the working area meet the design requirements.

1. Comparison between traditional air duct and phenolic air duct
The traditional air supply ducts of central air conditioners are usually made of iron sheet or fiberglass as the inner layer, wrapped with thermal insulation materials, and wrapped with aluminum foil on the outside, which makes the air supply ducts heavy and large, labor-intensive and time-consuming for construction and installation, poor in appearance, low in air tightness, and low in performance.