What Are the Different HVAC Jobs?

HVAC is an air conditioner with heating, ventilation and air conditioning functions. Because the main functions of HVAC include: heating, ventilation, and air conditioning, the abbreviation HVAC (Heating, Ventilating and Air Conditioning) is abbreviated as the comprehensive abbreviation of these three functions, namely HVAC.

Heating, Ventilation and Air Conditioning ( HVAC for short) refers to the responsibility

Heating, ventilation, and air conditioning are the result of inventions and discoveries by many scientists, including Nikolay Lvov,

The most fundamental goal of the HVAC system is to achieve the regulation and control of the ambient temperature to meet people's requirements for environmental comfort and some technical requirements.

In the early HVAC systems, a constant-flow hydraulic system was generally used to adjust the ambient temperature of the target area by stepwise control of the air volume of the end equipment. Box for air volume adjustment, etc. This adjustment is simple, rough, and decentralized, and there is no need to adjust the hydraulic system after the initial commissioning of the system is qualified.

With the continuous improvement of people's requirements for environmental comfort and energy saving awareness, this adjustment has been unable to meet the requirements. Therefore, people began to use variable flow hydraulic systems and variable air volume systems. The electric or air valve actuators were used to continuously adjust the water or air volume of the system to achieve precise control of the ambient temperature.

The electric control valve can be connected to various sensors, transmitters and controllers to form a decentralized control system, or it can be connected to a building control system to form a decentralized control and centralized management central control system, which greatly improves the system Ability to regulate ambient temperature.

However, in some variable flow systems where the system load fluctuates greatly, since multiple electric regulating valves work simultaneously, the change in the working state of any one electric regulating valve will affect other electric regulating valves, and the resistance of the electric regulating valve itself The interference ability is relatively poor, which causes the entire system to be unstable, the ability to regulate and control the ambient temperature is reduced, and the adjustment accuracy is reduced.

Therefore, in some current large-scale variable-flow central air-conditioning water systems, a new type of regulating valve with strong anti-interference ability, a dynamically balanced electric valve, has been increasingly widely used.

At the same time, a new type of fully balanced hydraulic system has also been adopted by more and more large variable flow water systems due to its high efficiency, stability and energy saving. ^[1]

"HVAC" is a classified name for the type of work in architectural design.

In China's construction industry, "architectural design institutes" have been taking the lead. After the establishment of a construction project, the overall design is first carried out by an architectural design institute.

The overall design of the building includes many sub-items, which are generally as follows: architectural design, structural design, basic design, electric power (strong and weak power) design, water supply and drainage design, HVAC design, supporting garden greening landscape design, and so on.

HVAC design (if required for the project) refers to the required "

1. Optimization of heat source system

In the process of energy-saving design of HVAC systems, the heat source system should be reasonably selected according to the actual situation of the engineering building. In general, the common types of heat sources in the Chinese market are: heat pumps,

The lack of energy, the drastic changes in the global environment, and the frequent occurrence of various related hazards have made energy conservation and environmental protection become the mainstream of the current era. Since then, energy conservation and environmental protection have begun to enter all walks of life and become the darlings of the new era. In the HVAC industry, energy saving and environmental protection have also become the industry trend.

The energy consumption of Chinese buildings (including production of building materials, construction energy, domestic energy consumption, heating and air conditioning, etc.) accounts for about 33.3% of the total energy consumption of the whole society, and the carbon dioxide emissions of the construction industry account for 43.7% of the total national carbon emissions. Buildings with national standards for new construction (which must save 50% of energy) accounted for only about 10% of the total construction during the same period. With the development of China's residential industry, building energy efficiency has received increasing attention from various national departments. At present, HVAC systems, as large energy consumers in office buildings and residences, have a direct impact on the energy consumption of the entire building. Therefore, the development of HVAC has attracted much attention.

As an energy-intensive industry, HVAC has a profound impact on the HVAC market in the context of energy conservation and environmental protection. Refrigeration Express reporter learned in the interview that with the continuous development of the HVAC industry, the product layout is quietly changing. Low-carbon energy saving has become the basic demand of HVAC products. HVAC companies continue to use advanced technology to improve the energy efficiency of air-conditioning products, develop energy alternatives and renewable energy sources, and develop new refrigerants.

The advent of the era of energy saving and environmental protection has won more business opportunities for enterprises with superior energy saving technologies, and at the same time, it has challenged some brands with backward product technology. At present, the domestic HVAC industry continues to increase investment in research and development, promote energy-saving products, and build core competitiveness of enterprises around energy conservation and environmental protection. Energy saving and environmental protection have become the development trend of the HVAC industry.

As the key to energy conservation and environmental protection continues to gain popularity, a clean, comfortable, and safe living environment is increasingly welcomed by people. Skills and environmental protection have become the current mainstream, and various industries have increased their investment to win more business opportunities. I believe that in the future, energy conservation and environmental protection will be favored by more and more people, and it will also provide a way for many businesses to become rich.

Hydrocarbon refrigerants mainly have the two advantages of energy saving and environmental protection; in terms of energy saving: using R433 air conditioners can save energy consumption by 15% to 35% compared with R134 and R22 air conditioners. Environmental protection: Hydrocarbon refrigerants are natural working fluids, so they have no pollution to the atmosphere, no damage to the ozone layer, and almost no greenhouse effect. On July 18, 2011, Li Ganjie, Vice Minister of the Ministry of Environmental Protection, attended the acceptance inspection and fully affirmed that the Sino-German cooperative hydrocarbon refrigerant room air conditioner demonstration production line successfully passed the acceptance in Zhuhai, Guangdong Province. The relevant parties successfully implemented this project. Painstaking effort and effort. ^[2]