1.3 to reduce pollutant emissions and protect the environment, solar energy resources are safe, reliable, pollution-free, and will not be exhausted
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The effective application of solar hot water system in building water supply and drainage can relieve the pressure brought by high cost of building water supply and drainage, including the installation cost and operation cost in the construction of water supply and drainage system
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2.2 in order to ensure the working pressure balance of the cold and hot water system, the differential pressure should be less than 0.02MPa, and corresponding measures should be taken when designing the pipeline
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Traditional energy in energy collection and utilization will bring some damage to the natural environment
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For outdoor pipelines, anti freezing measures should be taken according to the requirements to avoid water accumulation and frost cracking
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1.1 reduce the construction cost of building water supply and drainage system
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Under normal circumstances, the separated solar water heating system is directly heated to ensure that the circulation system can bear enough pressure
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1、 The application advantages of solar water heating system solar energy can get rapid progress and development in a short time, mainly because of its own advantages of low consumption, no pollution and so on
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For the branch pipe laid along the wall, the horizontal pipe trench should be laid in the floor or wall surface layer
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Solar energy is a renewable and clean energy, which can protect non renewable resources, reduce the application cost, and effectively protect the natural environment
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The starting mode of auxiliary heat source equipment is mainly divided into manual starting, timing automatic starting and all day key starting
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Therefore, the popularization and application of solar water heating system can not only effectively reduce the pollution to the external environment, but also provide reliable reference value for the progress and development of sustainable energy, and ultimately achieve the fundamental purpose of promoting the sustainable development and progress of the country
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For the pipeline, insulation measures should be taken to ensure the water supply temperature of the solar hot water system
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1.2 the solar water heating system is less affected by the external environment
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Even in the cold north, the water stored in the solar hot water system can be kept at a normal temperature
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For hot water system, it can be divided into natural circulation and forced circulation according to circulation mode, or direct heating and indirect heating according to heating mode
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It is very important to choose the pipe reasonably
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2、 The application of solar water heating system in water supply and drainage design 2.1 there are many types of solar water heating system in hot water system, the more common are water tank type and collector type, the former is compact type, the latter is separate type
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2.3 control mode in the design of building water supply and drainage, the position of solar hot water system should be reserved, and the auxiliary heat source heating device should be set to ensure the safety of heat source equipment operation and facilitate the later operation and maintenance
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Placing the water tank in the basement can not only reduce the difficulty of maintenance, but also weaken the negative impact on the overall facade structure of the building
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In the process of residential design, designers should consider the specific location of the solar hot water supply system, including the main functions of the system, reasonably select the solar hot water supply system, and scientifically determine the installation location of the collector and the location of the water tank
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The riser should be arranged close to the inside of the pipeline well as far as possible, and protective measures should be taken to provide favorable conditions for later maintenance and repair
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Contribution from Weihai Branch of North Engineering Design Institute Yu Shasha review Cong Pengfei editor in Chief Sun Aina.
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Under the active advocacy of the state, the utilization of clean solar energy is more diversified
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The use of direct heating can improve the efficiency of heat exchange and effectively avoid pollution leakage
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For the indoor horizontal pipeline, it should be concealed as far as possible
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The solar hot water system is less affected by the external environmental factors, and has obvious advantages compared with the traditional hot water system
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In order to ensure the integrity of the pipeline in the later period, when the pipeline passes through the enclosure system structure, preparations should be made
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3、 Precautions for solar hot water supply system 3.1 reasonable use of solar energy the internal structure of solar hot water supply system is more complex, the collector needs to be completely exposed to the sun, so in the design work, designers should try to reduce the shielding around the collector
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Compared with traditional energy, solar energy has greater advantages, which can reduce pollutant emissions and protect the environment
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If the integral solar water heater is selected, in order to further improve the operation efficiency of the collector, the relevant personnel are required to accurately record the daylighting inclination angle of the solar water heater, and optimize the installation process of the collector
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At the same time, with the rapid development of national economy and high-tech, China’s solar water heating system is also increasingly perfect, thus changing the development situation of China’s non renewable energy consumption
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It is unable to heat the water in real time, and is easily affected by the external environment, temperature and other factors, affecting the water quality of residents
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Considering the working pressure and temperature of the pipe, the metal pipe should be selected as far as possible, and the anti-corrosion measures should be taken
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Only by deeply exploring the combination of solar energy and daily life can we achieve the purpose of saving energy and maintaining ecological balance
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3.2 strengthen coordinated design in the planning and design work, designers should scientifically determine the orientation of heating houses according to the geographical environment of the building, including the climate and sunshine conditions of the area, so as to ensure that the economic and environmental benefits of the solar hot water supply system can be brought into full play
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Before the solar water heating system is widely used, the whole water supply and drainage system has great limitations
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For the concealed works, it is necessary to ensure that there is no joint in the pipe
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In this kind of system, the water tank and the collector are placed separately
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Combined with the hot water supply mode, the reasonable control mode is selected according to the actual project
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The rapid popularization of solar energy technology makes people realize the safety and importance of clean energy
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Through the scientific design of the capacity of the water tank in the solar system, the water in the water tank can be kept at a constant temperature
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At the same time, if we can use solar energy technology reasonably, we can truly realize the recycling of resources, which can not only ease the consumption of non renewable energy, but also speed up the reform of new energy development in China
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The pipeline layout should be arranged reasonably, and the outdoor pipeline should be concealed as far as possible
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Solar energy is widely used in the current society because of its recyclability
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In order to reduce the heat loss in heat transfer, foam rubber insulation layer with 50mm thickness should be installed on the outer wall of the tube
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In the design, the hot water demand of rural residents should be fully considered, and the heating form and scale of solar hot water supply system should be reasonably determined in combination with the economic capacity of rural residents
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Solar water heating system is widely used in building water supply and drainage design, which effectively solves this problem
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For the projects that need to set solenoid valve and temperature control valve, according to the relevant standards, the equipment maintenance space should be reserved in advance
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Based on the disadvantages of traditional hot water system, this paper aims to optimize the design of building water supply and drainage and promote the application of solar hot water system
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It is a renewable energy with convenient access, short time, high energy quality, and is not limited by geographical conditions
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The auxiliary heat source should be set near the hot water storage tank to facilitate the later operation and maintenance
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