Table 1 The connotation of energy-saving technologies and HVAC design 1.1 The connotation of energy-saving technologies. Energy-saving technology is, in simple terms, a technology that uses advanced technologies to save energy. Specifically, based on the state of energy use, a comprehensive analysis of energy consumption is conducted to obtain space for energy conservation. Therefore, formulate corresponding methods to control energy consumption, minimize waste and effectively save energy. Energy-saving technologies are mainly used in the fields of home, industry, construction and transportation, etc. Different energy-saving technologies are applied according to different fields.
1.2 Connotation of HVAC design. HVAC is mainly composed of three parts: heating, ventilation and air conditioning. HVAC design is the use of heating and cooling technology, can adjust the indoor temperature, humidity and air quality, improve people's lives and work quality.
HVAC energy-saving technology uses the least energy consumption to achieve the best adjustment effect. For example, solar energy can be used to share energy consumption in HVAC design.
2 Energy-saving technologies Practical energy-saving technologies in HVAC design are widely used in HVAC design. The following mainly takes the practice of energy-saving technologies in HVAC design in civil buildings as an example to briefly explain how energy-saving technologies are used in HVAC technology. The use of energy-saving technologies has certain standards that cannot be arbitrarily set and exceeds the national standards. Civil buildings are based on the design code for heating, ventilation and air conditioning of civil buildings. For example, the indoor building temperature calculations for civil buildings in winter are as follows: 18C~24C should be used for indoor temperature in cold regions; 16~22 indoor temperature for hot summer and warm winter regions; auxiliary buildings and auxiliary rooms should not be used. Below the following values: bathroom 25C, changing room 25C, office, lounge 18C, cafeteria 18C, toilet 12C. Therefore, in the design of HVAC technology, according to its standards, other resources are used to control the temperature in order to achieve temperature standardization. The way to achieve this can be through the use of solar and geothermal energy technologies to control the temperature of civil buildings.
Long-term stay indoor air conditioning indoor calculation parameters, such as Table 1. In the HVAC design should be designed according to the specification, HVAC design using heating and cooling to adjust the indoor temperature and air quality. In order to rationally use energy-saving technologies to reduce the consumption of resources, in the HVAC design, solar energy cooling, indoor lighting, and geothermal heating can be used to collect heat energy and achieve indoor temperature requirements. Through the insulation technology of doors and windows to absorb heat energy, save energy and ensure the standardization of indoor temperature and humidity.
3 Efficient Ways of Applying Energy-saving Technology to HVAC Design The application of energy-saving technologies is due to the large energy consumption and high cost in HVAC design. Energy saving greatly reduces HVAC design costs and energy requirements. The implementation of the national energy-saving emission reduction policy requirements. The application of energy-saving technologies in HVAC design should adopt the following effective approaches: 3.1 Always adhere to energy-saving design concepts, and scientific calculation methods. First, because of the new requirements for energy conservation and emission reduction in the “Twelfth Five-Year Planâ€, the design concept of energy conservation must always be adhered to in HVAC design. For example, when selecting materials, the cost of initial investment and the cost of operation should be considered. The degree of energy consumption should be comprehensively considered. It also needs to comprehensively analyze the characteristics of local energy conditions and construction purposes, and scientifically formulate standards for energy consumption. Second, in the scientific prediction of the system, it is necessary to pay attention to the different characteristics of the surrounding areas and regions in different regions. The system must be separated or set up so that the system can handle different issues and different links separately. This will avoid uneven heat and cold in the region and will not lead to the imagination of overheating in summer and winter in certain regions. Greatly reduce the energy consumption. Third, we must always analyze the application of energy-saving technologies, we must not excessively pursue advanced technologies based on the actual situation, mistakenly believe that advanced technology is the most reasonable technology. Specific analysis of specific issues and whether the application conditions are in line with the use of advanced technologies are prerequisites that HVAC workers should consider. Fourth, we must not erroneously think that a complex design is the best design, because in actual operation, the realization of a complex design requires a lot of equipment to complete, not only the cost is increased, but the ability to control is reduced. Can not reach the effect of energy saving. Finally, we must conduct scientific calculations to ensure the rationality of the design. According to the actual conditions of the project to analyze and calculate the overall design of the HVAC, to produce a reasonable and scientific design, but also to accurately analyze the data of various elements in the HVAC design information to ensure that the design zero errors. Determine suitable equipment, test the operating efficiency and performance of various equipment, and ensure the smooth progress of the project.
3.2 enhance the management level of the system. The professional competence and business level of management personnel are the key to decide whether the HVAC design level can carry out energy-saving technologies. Enhancing the professional skills of HVAC operators must be accomplished through collective training. Not only to strengthen its basic knowledge of air-conditioning, so that HVAC operators can make scientific decisions on energy-saving design, to achieve energy-saving technology in the design of HVAC.
3.3 The use of energy-saving forms. Because of the different architectural design, the requirements for environmental quality and comfort will also be different. The design of energy-saving HVAC is the first choice. There are two types of air conditioning: radiant and convection. Among these, radiant air conditioning design The method is more energy-efficient. Therefore, radiation-type air-conditioning design methods are generally used in HVAC design.
3.4 Using renewable energy. In the tense situation of energy shortage, the use of energy is subject to various restrictions. Therefore, the exploration of renewable resources has become a new theme of resource utilization. There are many renewable resources in natural resources, such as the use of solar energy for heating, the use of geothermal design to share the heating and cooling of HVAC. The use of renewable resources to ease the tension in the use of data.
3.5 using high-quality thermal insulation materials. For the building envelope materials, materials with good insulation effect, such as indoor doors and windows, can choose materials with good insulation effect to share the heat storage. Moreover, HVAC pipes must also be made of high-quality thermal insulation materials to avoid proper protection of the pipeline during the transportation of energy and to ensure minimum consumption of pipelines.
3.6 Use high quality HVAC equipment. Only the use of high quality HVAC equipment can effectively recycle hot and cold resources. For example, the summer air conditioning exhaust design can use heat recovery from condensation heat instead of full heat. Flexible adjustment of the recycling of hot and cold resources, so that the air conditioning system is always running in a high quality state.
The application of energy-saving technology in the design of HVAC has fully implemented the national goal of energy-saving and emission-reduction. From a small perspective, the implementation of energy-saving technologies has laid the foundation for the overall situation of energy-saving and emission-reduction. The application of energy-saving technologies enables the effective use of renewable resources, alleviates the current situation of resource shortages, and has a protective effect on the environment that ensures people's production and living. The application of energy-saving technology in HVAC technology is of great significance to the transformation of HVAC technology.
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