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Vacuum tubes are consists of two glass tubes which are fused together at one end. The inner tube is coated with a selective surface that absorbs solar energy well but inhibits radioactive heat loss. The air is withdrawn ("evacuated") from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss. These tubes perform very well in overcast conditions as well as low temperatures. Because the tube is 100\% glass, the problem with loss of vacuum due to a broken seal is greatly minimized. Glass-glass solar tubes may be used in a number of different ways, including direct flow, heat pipe, or U pipe configuration. Shentai uses a high efficiency heat pipe and heat transfer fin design to conduct the heat from within the evacuated tube up to the header.

Colour LCD Differential Temperature Controller Colour LCD Differential Temperature Controller Product features -- 4 measuring inputs for sensors and incremental encoders -- 2 speed-controlled outputs for pumps and valves -- control of middle range solar thermal plants with up to 2 collector arrays or 2 tanks -- 15 pre-defined hydraulic systems; additional systems on request -- installation and service wizard for easy handling -- innovative operation and visualization conce ..

DN16 Solar Pipe Nut Kit DN16 Solar Pipe Nut Kit RRP (ex VAT): Starting at: Price Unavailable One bag contains the following items 4 x 3/4" BSP nuts suitable for fitting to DN16 solar pipe 4 x Nut retaining clips 4 x Fiber washers ..

Premixed Food grade Solar Heat Transfer Anti Freeze 10 & 20 Liters Premixed Food grade Solar Heat Transfer Anti Freeze 10 & 20 Liters 10 & 20Liters Specially formulated anti-freeze premix Based on propylene glycol blended with corrosion inhibitors and ultra pure water This premix is biodegradable with 90\% degradation taking place over the first 30 days. Will offer protection down to -20ºC Non volatile and non hazardous Non toxic to humans and animals. Protection down to -20ºC Temperature range -20ºC t ..

Solar Thermosiphon Water Heater Solar Thermosiphon Water Heater This thermosiphon solar water heater is ideal for farms and applications such as holiday homes and campsites. •  Stainless Steel tank –with 240 Litre or 300 Litre capacity with 50mm insulation. •  24 or 30 Vacuum Tubes 1900mm long. •  Painted galvanised steel frame with stainless steel fasteners. DAC-E,DAC-EH specifications .pdf ..

1 Solar Roofing Bolts 1 Solar Roofing Bolts 200mm Stainless Steel Roofing Bolt, for fixing to roof rafter. 1 x A2 Stainless Steel Bolt M8& M10, 200mm Long 1 x Solid Neoprene Seal 25mm 3 x M8 & M10 Stainless Steel Washer Nut for fixing the solar collector. The wood screw section features an extra deep screw thread for secure fixing and an extended 100mm M8 &M10 threaded section for collector positioning.   ..

Universal flanging hammer Universal flanging hammer Forming Tool for DN16 / DN20 Hose Dual function forms both DN16 & DN20 tube Forms the end of the hose after cutting. ..

Solar pumping station Solar pumping station Twin line pumping group for solar systems Main technical data Technical  data: Dimension  :L42cm×W28cm×H14cm Power  Consumption?< 4W  temperature measuring±2C Range of collector temperature measuring?-10?200?C Range of tank temperature measuring?0?100?C Suitable power of pump:4pcs,< 600W Suitable power of electrical heater:1pc,<1500W Inpu ..

SR 868 Shentai Solar Controller SR 868 Shentai Solar Controller Main functions 1.Main  menu  DT  O  &  DT  F  Temperature  difference  function 2.Main  menu-THET  timing  heating 3.TEMP  Temperature  main  menu 4.EM  Emergency  collector  temperature ?emergency  switch-off  temperature  of  collector? 5.CMX  Maximum  limited  c ..

Solar Pipe Entry Flashing Solar Pipe Entry Flashing Solar Pipe Mini Cone Flashing - 5-50mm Mini cone for flashing solar pipes coming through roof, Rubber booth can be cut down to suit pipe diameters between 5mm and 50mm silicone pipe flashing suitable for either slate or tile roof. High Temperature Silicone Pipe Size 0 to 50mm diameter   ..

25 Mtr DN16 Flexible Stainless Pipe On Reel 25 Mtr DN16 Flexible Stainless Pipe On Reel 100Mtr Single Tube DN16 on the roll Tube Internal Dimension 16.3mm ± 0.3mm Tube External Dimension 21.4mm ± 0.3mm Stainless Steel AISI 316L (DIN 17441) Highly Flexible, Tight Bend Radius, Hose Temperature Range -270ºC to +600ºC Working Pressure 16 Bar Can be cut to length on site ..

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