Large-space industrial plants cover a large area, and when carrying out HVAC design work, it is necessary to reasonably allocate various resources and facilities in combination with the environmental conditions of the site. However, in combination with the actual situation, the energy consumption problem of traditional HVAC design is relatively obvious, which cannot meet the needs of green building design. In recent years, in order to ensure the energy-saving and efficient operation of HVAC systems in large-space industrial plants, designers need to achieve energy-saving design optimization goals from the following aspects.
1. Energy-saving design of water system
As a major and difficult design content of HVAC system in large space industrial plants, the energy-saving design of water system emphasizes that designers should strictly follow the bearing pressure and carrying capacity requirements of the water system during the actual design period, and ensure the efficient application of various equipment through scientific division of regions. Among them, it is possible to achieve good energy-saving effects by actively introducing and utilizing new technologies and dirt removal methods. For example, designers can strengthen the control and management of the operation process of the water system by using frequency conversion technology. At the same time, it is also necessary to regularly treat the dirt in the water system to ensure the safe and efficient operation of the water system.
2. Reasonable configuration and selection of cold and heat sources
The cogeneration method implemented by some large enterprises usually requires the use of recycled water waste heat to achieve a good heating process. Or you can also use the steam method after the waste heat boiler to achieve a good heat exchange and heating effect. In the specific selection process, it is suggested that the designer should choose the appropriate heating method for efficient application based on the actual situation of the project. For large-space industrial plants, if the plant is only based on the heating heat operation mode, it is recommended that the designer can use high-temperature hot water as the heat medium. If the heating mode of the plant is mainly process steam, and the hygienic and energy-saving conditions meet the requirements, the steam mode can be preferentially used.
It should be noted that industrial electricity is relatively expensive, and it is not recommended to choose electric heating methods for factory building heating. In addition, if the plant is not located in an extremely cold area, in terms of energy-saving design of cold sources, air-cooled heat pump units can be preferentially used for efficient application. Among them, the selection of cold and heat sources should adhere to the principle of high efficiency and energy saving standards to achieve good operating efficiency. When optimizing the design of the cold source, the designer needs to make reasonable adjustments to the distribution of the cold source according to the actual situation of the plant, so as to enhance the energy efficiency.
3. Optimal design of regulation and control of operating equipment
For large-space industrial plants, good energy-saving operation can be achieved by reducing the energy consumption of cooling towers. In the specific implementation process, the designer should set the number of HVAC start-ups and the running time reasonably. It is best to combine the climatic conditions and the layout of large-space industrial plants to reasonably deploy the placement of heating equipment and refrigeration equipment to achieve good energy-saving effects. In addition, the utilization rate of heating equipment in large space buildings is not very high, and some equipment is idle for too long, which may cause waste of resources. In this regard, it is recommended that the temperature can be maintained by using a radiator when the device is not in operation. And in the process of production and application, the air conditioning system can be appropriately turned on according to the actual situation of the site to supplement the heat.
4. Energy-saving design of ventilation duct system
Energy-saving design of ventilation duct system has always been a key issue in the design of HVAC system in large-space industrial plants. In the specific optimization design process, the designer should reasonably set the number of ventilation ducts according to the actual needs of the industrial plant. Combined with the space environment, select the appropriate area to install the ventilation duct system. It is recommended that the device be preferentially placed in an area where there is no human contact for installation and application. If it is installed on a wall of a certain height, it can save space and avoid the negative impact of workshop dust on the safe operation of HVAC.
In short, the energy-saving design of the HVAC system of large-space industrial plants should be actively combined with the spatial structure of the plant and the specific floor height, and the number of HVAC system equipment and the selection of energy-saving design technology should be emphasized and deployed in the planning. At the same time, in the process of design optimization, the temperature control effect and energy consumption should also be comprehensively considered to ensure that the energy-saving operation effect of the HVAC system can be fully enhanced. It is believed that with the continuous efforts of the designers, the HVAC system of the large-space industrial plant will further meet the requirements of green building design standards.