Planning and design principles for decentralized heat collecting solar water heating engineering system
The decentralized solar thermal water heating system is a relatively common solar water heating system. It is suitable for use in small-scale independent houses and low-rise townhouses, and can also be used in multi-storey apartment buildings. The characteristics of the system are that the solar collectors are dispersed and the households are arranged. The storage tanks, related pipelines and auxiliary heat source facilities are all set up according to ®, that is, each household has an independent small solar water heating engineering system.
The system is easy to use and easy to maintain, overhaul and manage.
Key issues to be addressed in the planning and architectural design of the system.
The solar collector is set up. The solar collectors of the distributed heat collecting solar water heating system are distributed by W and used by households. The solar collectors of each household are not large, and the possible locations of K in the building are more flexible. For example, solar energy collectors are considered for small-scale independent houses, low-rise townhouses on sloping roofs, sunshade facilities, low-rise houses and multi-storey residential walls and balconies. The solar collectors are coordinated with the overall architectural style and organically combined to create a colorful new form of residential building using solar water heating engineering systems.
The solar collectors of the system are arranged in a variety of positions, except for the number of hours of illumination that are not less than 4h in the planning layout, avoiding the environment of the environment and the sunlight of the building itself projected onto the solar collector h In addition to the occlusion, the design should pay attention to the conditions that should be convenient for its installation and maintenance, and ensure that the solar collector is safe and firm no matter in any part of the building.
The setting of the storage tank. The water storage tank using the distributed heat collecting solar water heating system system determines the size of the water storage tank by using the ffi of each household's hot water, so there is no problem that the water storage tank is too large, and the arrangement is also flexible. Can it be determined according to the possibility of the flat Ifi丨 design? "The rooms, bathrooms and special equipment rooms are good choices, independent small
(can be combined with the storage room) or reserved in a private garage for the storage of water used by S households. • It is also a design consideration. The location of the storage tank should be close to the location of the solar collector of the household. W: Reduce the heat loss in the pipeline. The storage tank should be located at the location of the corresponding waterproof and drainage facilities, and leave room for installation, maintenance and overhaul according to the “Specifications”.
Organized and orderly arrangement of many pipelines and pipelines in the space of buildings is particularly important in civil buildings that use decentralized heat collection systems. With this type of hot water supply system, since each household has an independent solar water heating engineering system, the number of pipes that can be avoided will increase accordingly, and the reasonable direction of many pipelines should be well solved in the design, and arranged in an orderly manner. It should be safe and concealed and easy to maintain and overhaul.
The selection and location of the auxiliary heat source. As with the first two systems, conventional energy sources such as gas or electricity can be selected as an auxiliary heat source for the system. In addition, according to the actual conditions of the construction site, the hot water supply system of the solar water heating system, the user's request for use, economics and other factors to determine the type and supply mode of the auxiliary heat source, and properly arrange their ranks, so that Close to the storage tank, it is safe and suitable. At the same time, the space for easy operation, maintenance and inspection is considered in the layout of the building.