1.Introduction to disciplines and majors

Heat supply, gas supply ventilation and air conditioning engineering is a widely applied discipline, based on the theory of heat and mass transfer, engineering thermodynamics, fluid mechanics, and built environment, heating engineering, gas engineering, air conditioning engineering, ventilation The principles of engineering, refrigeration and low temperature are professional foundations and are closely integrated with actual engineering. The undergraduate science focuses on indoor air quality, thermal comfort, thermal characteristics of the envelope structure, ventilation mechanism, efficient heating technology, optimization of gas transmission and distribution, air conditioning principles, indoor purification technology, utilization of renewable energy, optimization of passive building design, architecture Research on environmental simulation and automatic control of HVAC systems. The research content not only involves the basic theory of artificial environment systems, but also focuses on practical issues such as design optimization, construction, operation adjustment and equipment development of various artificial environment systems. This subject aims to meet the needs of people's production and life parameters with less conventional energy consumption, and create a variety of artificial environments that are healthy, comfortable, and meet process requirements. The application fields cover civil buildings (residential, shopping malls, office buildings, hotels) , Hospitals, airport terminals, etc.), industrial buildings (clean workshops, steel smelting workshops, welding workshops, etc.), underground buildings (metro, underground shopping malls, etc.), tunnel engineering (highway tunnels, sea tunnels, etc.), vehicles ( Trains, cars, airplanes, etc.), agricultural facilities (vegetable greenhouses), etc. In the process of research and development of efficient air conditioning, pollution control, renewable energy, enclosure structures, and other equipment, devices, and components, this discipline faces complex fundamental problems of heat transfer, mass transfer, flow, energy conversion, and utilization. Master the basic principles and analysis methods in the above process. Through in-depth analysis of the heat, moisture and pollutant transfer process, optimize the structure of the equipment, reduce costs, and improve energy efficiency. The study of this subject has strong theoretical and engineering practical significance.

2. The main subject direction of this subject

(1) Theoretical basis for indoor environment creation

Theoretical basis of indoor environment construction Research on the requirements of basic parameters and construction mechanism of indoor environment. The study of basic parameter requirements includes suitable indoor thermal comfort, air quality and light environment parameters. It is the premise and foundation of indoor environment creation. The research results will be indoor environmental standards It is formulated to provide reliable basic data support and provide clear control objectives for the indoor environment. It is a comprehensive research direction that combines theoretical analysis, research, experimental testing, health effect analysis and other research methods. Construction mechanism studies the indoor heat source, humidity source, pollution source release and air propagation process, outdoor temperature, humidity, pollutants through the envelope structure and doors and windows and other gap structures are transmitted to the indoor impact process, indoor environment thermal process simulation, indoor, Three-dimensional simulation of the distribution of external parameters, and study the theoretical methods to improve indoor environmental parameters.

(2) Utilization of renewable energy

The use of renewable energy is a research direction that aims to reduce the use of conventional energy and efficiently create an indoor environment. Specific research aspects: efficient solar energy utilization, shallow geothermal utilization, air energy utilization, waste heat recovery and utilization (thermal power plants, etc.), optimization of wall thermal performance of passive buildings, etc. The research involves the research and development of a number of high-efficiency equipment: solar heat collection and storage, ground source heat pumps, air source heat pumps, absorption heat pumps, etc. This subject direction has broad application potential in different architectural fields and plays an important role in the optimization design of passive green buildings.

(3) Air conditioning principle and device development

Air conditioning principles and device development are the main subject directions of this discipline. The principles of air parameter and composition adjustment and control are studied, and a new high-efficiency heat and moisture treatment project is established through optimization analysis of the heat and moisture treatment process. The research directions involved include: all-air system temperature and humidity control technology, evaporative cooling technology, independent temperature and humidity control, and new return air heat recovery technology. Research and development of efficient dehumidification equipment, temperature and humidity control air conditioning system, evaporative cooling unit, new return air heat recovery unit has an important role in reducing energy consumption.

(4) High-efficiency heating and gas supply technology

High-efficiency heating, gas supply technology research, urban energy system planning, combined heat and power cooling technology, gas transmission and storage technology, factory waste heat utilization technology, high-efficiency hot water preparation method, discussion on optimal design of heating (gas) system, energy-saving system operation Control strategy and other directions. Research in this direction has always played an important role in heating in the northern region, and attention has also been paid to the study of efficient heating programs in the southern region.

(5) Ventilation and purification mechanism

The mechanism of ventilation and purification is an important way to guarantee indoor air quality. Mainly studies outdoor wind environment (wind parameters, pollutants) and its impact on indoors, the effect of ventilation on indoor environment protection, the optimization of ventilation airflow organization, the development of ventilation terminal devices, the development of natural ventilation devices, the optimization of ventilation control strategies, the purification mechanism of indoor pollutants (Filtration, adsorption, photocatalysis, etc.), purification parameters optimization, etc. This direction plays an important role in the control of pollutants in industrial plants (clean workshops, welding workshops), civil buildings, and tunnel projects.