Introduction of Non-Pressure Solar Water Heater:Non-pressure Solar Heater is one of the most economical solar water heating device with pretty high efficiency at the same time. It consists of hot water storage tank, solar vacuum tubes with mouth plug in storage tank, and bracket supporting tank and tubes.When cold water in evacuated tubes is heated with solar irradiation, as the specific gravities of hot water and cold water are different, hotter water goes upward to storage tank and colder water goes downward to glass tubes. through this continuous circulation, the cold water in storage tank will be gradually heated till sunset.
ÿSolar water heaters working principle
1. The solar collector absorbs solar energy and transmits it to the solar water heater tank through circulationÿ
2. When the temperature of the collector reaches the set value, the controller starts the circulation pump automatically
3. The circulation pump makes heat-conducting liquid circulate automatically
4. The heat-conducting liquid transfers heat to water by lower heat exchanger in the water tank.ÿ
5. When the temperature difference between solar collector and heat pipe solar water heaters tank doesn’t reach the set value, the circulation pump will be shut automaticallyÿ
6. In case the temperature of the water tank does not reach Tmax, Electric Heating Element will start to work automaticallyÿSolar water heaters working station component:
1. Operating screenÿ
2. Manometerÿ
3. Pump speed adjust switchesÿ
4. Temperature difference circulation pumpÿ
5. Flow rate indicatorÿ
6. Return circuit connectorÿ
7. Safety valveÿ
8. Expansion vessel connector9. Return circuit connectorÿ
10. Wall mountingÿ
11. Expansion vessel:8Lÿ
12. Pressure resistance: 10 bar pressure for expansion vesselÿSolar water heaters specification:Descriptionsolar water heatersMaterial of out manifold0.55mm thickness color steel/ fluorine carbon steelMaterial of inner tankFood grade 2.0 mm thickness SUS304 stainless steelTank insulating layer40mm 45kg/m? high-density polyurethane foamedInlet and outlet holeMale G1”Max pressure0.6 MpaSolar collector tube3.3 Borosilicate glass with N/Al coatingThickness of glass tube1.6mmVacuum tube tightnessPó0.005 PaAbsorptionas=0.93-0.96 (AM1.5)Emission ratioîh=0.04-0.06 (80Cñ5C)Idle sunning property parametersY=220~260m2.C/KWAverage heat loss coefficientULT=0.6~0.7W/(m2.C)Bracket:2.0mm thickness aluminum alloyTank weight75KGSTank size560mmÿDia x 1810mm HeightTank capacity300LSolar collector2pcsÿÿ58x1800x15tube solar collectorAbsorber area2.811ÿmýWorking stationSP116ÿworking stationHeat exchanger lengthUpper:12m,ÿÿ ÿ ÿUnderside:18mÿSolar water heaters details show:
Benefits of this kind of solar water heaters:1. Prolong the life of your existing water heater2.Costs less than an electric, gas or oil water heater3.No maintenance required4.Lasts longer than a traditional hot water heater5.Reduce your water heating costs