JR Series Pressurized Solar Water Heater

JR Series Pressurized Solar Water HeaterIntroduction of JR series solar water heater JR Series solar water heaters are close-coupled solar domestic water systems of all-glass evacuated tubular collector with heat pipes, which are ideal for use in small units, houses and other applications where cheap, reliable hot water supply is required. JR series solar water heaters can be used together with the auxiliary electric boost, thus providing hot water even in the low-radiance day. JR series are available in two sizes, depending on your hot water requirements. Advantages: - Highly efficient absorber of high performance with daily average efficiency over 50%; - Start up quickly, heat pipe transfer the heat energy into the storage tank in one direction. - Withstand pressure of 0.4 MPa, can be connected directly with city water pipe. - Higher daily efficiency than JB series. - The storage tank and the heat pipe are metallic sealed; - No water inside the evacuated tubes; the solar water heater can still in service even with several tubes breakage; - Stainless steel inner cylinder stands 100,000 fatigue tests without any distortion; - Highly efficient insulation with polyurethane foam; - Simple structure, easy to assembly and install, diffuse flat plate reflector can be assembled easily with its module structure; - Can be used all year round in the cold climate; - Can be used together with Auxiliary electric boost; - Automatically controlled; - Long service life, can be used as long as 15 years; - Large-scale solar hot water system can be installed either with parallel or series connections. Features of Tubular Collector with Heat Pipes - Combination of evacuated tube, heat pipe and aluminum fin; - Graded Al-N/Al selective coating, high energy absorption and low heat transfer losses; - High transparency with boron silicon glass 3.3, high resistance to cold water shock; - highly evacuated with pressure ≤5×10-2 Pa in the space between outer and inner covers; - Heat pipes with low heat capacity and fast conductivity produces a rapid and extremely efficient transfer of heat energy in one direction only within the collector; - The heat transfer fluid in the heat pipe is highly compatible with the metallic material, resistant to temperature as low as -30; ModelsJR-4715/21JR-4715/24JR-4715/28Volume of storage tank158L178L208LNumber of tubes212428Tube47×1500mmStorage tank materialOuter shell: aluminium/zinc coated steel sheetInner cylinder: SUS 304/316LInsulationPolyurethane foam with thickness of 45mmReflectorFlat plate diffuse,aluminumFrameProfile aluminumSide endedMetallicMetallicMetallicOperation pressure0.45MPaAperture area2.12.42.8Net weight47kg52kg57kgHeat loss coefficient9.5W/·KOptional electric booster2kw