Classification of solar water heaters
3 ceramic hollow flat plate solar water heaterCeramic solar panels are a common ceramic matrix, three-dimensional mesh surface layer of V-Ti black ceramics hollow thin-walled flat box type solar collector. Ceramic solar panels for the whole ceramic material, waterproof, impermeable, high strength, good rigidity, no corrosion, not aging, do not fade, non-toxic, harmless, non radioactive, sunlight absorption rate does not decay, with long-term high photothermal conversion efficiency. By the national solar water heater quality supervision and inspection center detection, the solar absorption ratio of ceramic solar panels is 0.95, the solar energy of the solar energy roof of concrete structure is 8.6MJ, much higher than the national standard. Ceramic solar panel manufacturing, low cost, light absorption ratio does not decay, with life and architecture, can be used for concrete structure and the roof structure shared ceramic layer and the insulating layer, waterproof layer, simple structure, good insulation effect on the original roof, and building integrated solar roof, wall, balcony guardrail surface Xiangyang provide hot water, heating, air conditioning, building; provide heat energy for agriculture and aquaculture; can be used for large-scale desert solar hot water power generation, wind power generation, desalination, brackish water desalination, turn the desert into farmland.
2) flat plate solar water heaterFlat plate solar water heater can be divided into tube plate, wing tube, snake tube, flat box, round tube and heat pipe type. The utility model has the advantages of good integrity, long service life, less failure, safety, low pressure operation, safe and reliable, easy to heat absorption area, combined with the construction, resistance to water and air drying advantages, its thermal performance is stable. Because of the non vacuum in the cover plate, the insulation performance is poor, so the collector performance is poor when the ambient temperature is low. Low temperature or high water temperature required for low thermal efficiency. Such as the need to replace the whole set of frozen hot plate, suitable for the southern region of the winter is not frozen.
In terms of its structure, can be divided into the following categories:1 from the heat collection part:1 glass vacuum tube solar water heaterThe utility model can be divided into a whole glass vacuum tube type, a heat pipe vacuum tube type, a U type tube vacuum tube type / vacuum tube heat collection and heat storage integration type. The utility model relates to a full glass vacuum tube type, which has the advantages of safety, energy saving, environmental protection and economy. Especially the solar water heater with an auxiliary electric heating function, which by the solar energy, supplemented by the way of using energy to the solar water heater all-weather normal operation, the ambient temperature is low efficiency is still relatively high. The disadvantage is that the volume is relatively large, the glass tube is fragile, easy to scale the pipe scale, can not be operated under pressure.
