Selection Guide of are there?
The first took the stuffy drying heaters. This is a collector and heat storage combined with the overall heat storage water heaters, generally two to three blacked-tube structure, the black coating to absorb heat from the water can heat the advantage of simple structure, low cost; shortcomings is a fast heat, hot water can not be used overnight, during the winter and rainy days can not be used, this product was only used in some remote rural areas, has basically been eliminated.
1, first on behalf of nausea drying heaters. This is a collector and heat storage combined with the overall heat storage water heaters, generally two to three blacked-tube structure, the black coating to absorb heat from the water can heat the advantage of simple structure, low cost; shortcomings is a fast heat, hot water can not be used overnight, during the winter and rainy days can not be used, this product was only used in some remote rural areas, has basically been eliminated.
2, the third took the flat-plate . It consists of flat-plate collector tank, generally using natural circulation operation mode. Flat channel heat from the heat-absorbing body, a transparent cover, back and side insulation layer and the framework composition. Domestic flat body of the letter are endothermic heat of the blow up process rolling composite pipe made of copper and aluminum plate, copper (copper wood) tube plate, welded stainless steel metal forming and other flat box structure. They are guaranteed clean water, heat-absorbing body sunny with acrylic top coat anodized black or colored with selective coating; collector back and side of the insulation materials commonly used in polyurethane foam, mineral wool and polystyrene vinyl plate (thermal contraction phenomenon, must be padded with heat-absorbing glass wool or reflective body separated), with a specially designed multi-framework aluminum (glazing and sealing materials). 5mm glass with a transparent cover. Features: low cost, high thermal efficiency, can produce hot water when there is sunshine, but heat faster, larger heat loss in winter, rainy days and difficult to achieve a bath temperature requirements.
3, the third took the vacuum tube water heater. It consists of multi-vessel glass vacuum tube directly into the tank structure, the general use of natural convection heat transfer. Each vacuum tube is placed between the hole and water tank made of silicone rubber seal. Vacuum tube does not take the water, by the copper heat pipe inside the superconducting heat transfer medium, and high thermal efficiency without furring. Most of the domestic water heater real glass tube, which consists of a diameter of 37mm, 47mm and 58mm high borosilicate glass made of concentric tube sealing, tube between the pump into a 5 × 10-3Pa vacuum deposition with the outer surface of inner tube nitrogen gradient aluminum / aluminum selective absorption coating solar spectrum (absorption ratio a = 0.90 ~ 0.92, firing more than Σ = 0.06 ~ 0.1), the tube length with 1.2m and 1.5m two. Vacuum tube collector heat loss coefficient (U = 0.55 ~ 1.2W/m2.0C), so use it to make solar water heaters in the winter even better thermal performance, for in the North and the South suddenly overcast and rainy days suddenly Yang weather use. Characteristics: high thermal efficiency, absorbs heat quickly, slow heat, heat loss, as long as the amount of solar radiation to meet the requirements, rainy days and winter can also be used, the appearance of luxury, durability, up to 15 years, small footprint, ideal for home use.