Stainless Steel Pre Heating Thermosyphon Solar Water Heater

Working Principle:This type solar water heater provides main pressure pre-heating via a high efficiency copper coil heat exchanger  with the solar collector tank.Rater than using the water in the tank directly, as the non-pressure does.When water flows through the coil it absorb heat from the water inside the solar tank. The solar tank therefore is a thermal store and amount ofWater you can draw isn't restricted to size of tank.There is no water entering such kind of collector so that it can avoid corrosion and rust. Pre-heating solar water heater can be connected directly with pressure water pipeline.So it can be used as high pressure system.Feature:1) Exterior tank with  stainless steel/galvanized steel2) Interior tank with food grade stainless steel SUS304-2B3) Frame with stainless steel/galvanized steel4) Copper coil can bear pressure 0.6MPA5) With 55mm Germany polyurethane foam insulation6) Borosilicate 3.3 twins-glass vacuum tube7) Optional fittings: assistant refilling tank ,controller, electrical heater etc.  Item No.SpecificationTank's Capacity(Liters)Tube Aperture area (m2)Qty (set)Diameter of water tankQty.  of solar tubesDiameter  of solar tubeLength of solar tube20GP40GPST470-58/1800-18PHCS470mm18pcs58mm1800mm180L1.674386ST470-58/1800-20PHCS470mm20pcs58mm1800mm200L1.863877ST470-58/1800-24PHCS470mm24pcs58mm1800mm250L2.233367ST470-58/1800-30PHCS470mm30pcs58mm1800mm300L2.7926 53  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1