Advantages: 1). Highly efficient absorber of high performance with daily average efficiency over 50%; 2). Start up quickly, heat pipe transfer the heat energy into the storage tank in one direction. 3). Withstand pressure of 6 Bar, can be connected directly with city water. 4). No water inside the evacuated tubes; The solar water heater can still in service even with several tubes breakage; 5). Highly efficient insulation with polyurethane foam; 6). Simple structure, easy to assembly and install, diffuse flat plate reflector can be assembled easily with its module structure; 7). Can be used all year round in the cold climate; 8). Can be used together with Auxiliary electric boost; 9). Long service life, can be used as long as 15 years;
10). STH-L frame can be for slope roof and flat roof both.
Specifications: 1). Material of storage tank: 2). Outer tank: Colorful steel, 0.4mm thick 3). Inner Tank: Crystal liner 4mm, steel 1.5 mm 4). Thick Insulation: Polyurethane foam, 50 mm 5). Working pressure: 6Bar 6). Daily efficiency: ≥ 55% (≥ 42% in winter) 7). Working temperature: 60 Degree Celsius -35 Degree Celsius 8). Vacuum tube specifications: 58mm*1800mm 9). Lifetime: 15 years