Introduction to HVAC air conditioning systems, heating, ventilation and air conditioning

Founded in 2008, Beijing Jingcheng Zhishen Technology Co., Ltd. is a technology-based technology enterprise integrating science, industry and trade. Engaged in the sales of automation instruments, meters and equipment and the promotion of domestic and foreign products. We are committed to introducing advanced instruments, meters and automation equipment at home and abroad to customers in buildings, HVAC energy-saving, electricity, electronics, heating and other industries.

To provide customers with quality products, perfect technical support and good after-sales service is the company's consistent purpose. The company pursues the policy of "technology-centered, demand-oriented, service-oriented", and its products have been sold in all walks of life in China. **Building automatic control system, constant temperature and humidity control cabinet of air conditioning unit, constant temperature and humidity automatic control cabinet, constant temperature and humidity strong and weak electric integrated cabinet, air handling unit system control engineering; Steam station and boiler room....

Heating, ventilation and air conditioning (HVAC) refers to the system or related equipment responsible for heating, ventilation and air conditioning in the room or in the vehicle. The design of HVAC systems is applied to thermodynamics, fluid mechanics and fluid mechanics, which is an important sub-discipline in the field of mechanical engineering.

Sometimes the abbreviation HVAC is also added to the r, which stands for refrigeration, and the abbreviation becomes HVAC&r or HVACR, or the abbreviation is added to the abbreviation, and the abbreviation becomes HACR, minus the v that represents ventilation.

HVAC systems can control the temperature and humidity of the air and improve indoor comfort, which is an important part of medium and large industrial buildings or office buildings such as skyscrapers.

From the perspective of non-HVAC majors in civil engineering, the heating, ventilation and air conditioning station starts from the design of heating, ventilation and air conditioning systems, takes the design of heating, ventilation and air conditioning systems as the main line, systematically and completely introduces the ideas and methods of heating, ventilation and air conditioning system design, as well as the basic theories and basic principles related to them, and integrates the author's educational reform achievements and engineering design experience. This textbook can be used as a teaching book for undergraduates of civil engineering non-HVAC majors, such as civil engineering, architecture, water supply and drainage engineering, engineering management, etc., and also has certain reference value for engineering and technical personnel who are new to building environment and equipment engineering (formerly HVAC major).

The main types are fresh air, mixed fresh air, all-air type, and soda type.

The principle is to treat the air with different functions through water or other media and methods, such as heating, refrigeration, humidification, dehumidification and purification, so that the air delivered to the living environment can meet the comfort requirements.

For different types, the advantages and disadvantages are also more obvious. For example, the fresh air system needs to treat a large amount of air and has a low utilization rate of the energy contained in the original indoor air, which is part of the disadvantages. However, the fact that it can achieve a level of air quality is an advantage, and the disadvantages of this advantage include high energy consumption.

Throwing bricks and stones.

1. Regulating equipment generally includes air inlet and dust filter devices, ventilators, pipes, disinfection equipment, air outlet devices and equipment (such as spray room, washing room, etc.) that deals with air temperature and humidity. For systems that require constant temperature and humidity, they are often equipped with automatic control and adjustment equipment. Air conditioning is used in chemical fibers, pharmaceuticals, rubber, fermentation, food, textiles, and precision instruments, as well as in homes, venues, museums, hospitals, theaters, and the interior of well-equipped vehicles.

There are two categories: comfort air conditioning and industrial air conditioning, the former is aimed at indoor personnel and creates a comfortable environment; The latter aims to maintain optimal indoor conditions for production processes, machinery and equipment, or storage items.

Air conditioning system is also known as air conditioning, referred to as air conditioning. Technology that artificially treats the temperature, humidity, cleanliness and airflow velocity of indoor air. It can enable some places to obtain air with a certain temperature and humidity to meet the requirements of users and production processes and improve labor hygiene and indoor climate conditions.

Home air conditioning systems are most common and popular in East Asian countries, including Japan, South Korea, major cities in Chinese mainland, Hong Kong and Taiwan. Due to the hot summer climate and high standard of living, air conditioning has become a necessity. Most of the air-conditioning systems manufactured in Japan and neighboring regions are window type (window type) or split type (split type), which is more advanced and expensive.

With the improvement of living standards, air conditioning has gradually become popular in tropical Southeast Asian regions such as Malaysia, Singapore and the Philippines.

In the United States, home air conditioning systems are more common on the East Coast and in the South, and in some areas the popularity is similar to that in East Asia. **Air conditioning systems are common in the U.S. and become the unofficial standard for new homes in Florida.

In Europe, home air-conditioning systems are rare, partly due to the milder climate and social reasons in Europe, such as the traditional Siesta (siesta) of Spaniards and long summer vacations in France. However, the phenomenon of global warming may make air conditioning systems more common. Lack of air-conditioning in homes, homes for the elderly and health facilities may have contributed to the 35,000 deaths in Europe's 2003 heatwave.