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Powertech and Apricus Solar Thermal

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Powertech1

  1. 1. Energy Saving Solutions www.powertech-solar.com
  2. 2. Company Background www.powertech-solar.com <ul><li>After many years of intensive research & development, (much carried out in Cyprus) we are in a unique position to provide affordable solutions to the global problems of depleting energy and water supplies. We aim to inform people of the wide range of micro-renewables available that can be installed into new and existing homes to reduce energy or water consumption. These include: </li></ul><ul><li>Solar Thermal Collectors </li></ul><ul><li>Air Source Heat Pumps </li></ul><ul><li>Hybrid Photovoltaic / Micro-Wind Systems </li></ul><ul><li>Underfloor Heating Systems </li></ul><ul><li>Rainwater Harvesting Systems </li></ul>
  3. 3. Why Solar Thermal? www.powertech-solar.com <ul><li>Around 20% of CO 2 Emissions are Produced Domestically – Solar Thermal Collectors Can Help to Counteract this </li></ul><ul><li>Will provide 60% of Annual Domestic Hot Water </li></ul><ul><li>Can be integrated with Air Source Heat Pumps through a thermal store to provide most of Domestic Hot Water Requirements </li></ul><ul><li>Systems such as the Apricus Evacuated Tube Solar Collector are Modular – therefore parts can be easily replaced </li></ul><ul><li>25-30 Year Expected Life </li></ul><ul><li>Increased desirability of property due to the Fuel Bill Savings and Property Energy Rating it Offers the Purchaser </li></ul>
  4. 4. Solar Thermal Collectors www.powertech-solar.com <ul><li>A Solar Hot Water System (Solar Thermal </li></ul><ul><li>Collectors) can be one of two types: </li></ul><ul><li>Flat Plate </li></ul><ul><li>Evacuated Tube </li></ul><ul><li>Flat Plate Collectors </li></ul><ul><li>These are installed in the UK, however, they are more effective in hotter climates. </li></ul><ul><li>Evacuated Tube Collectors </li></ul><ul><li>Because they can passively track the Sun they are better suited to the Northern Hemisphere as they can capture incoming radiation at more oblique angles. </li></ul>
  5. 5. How Is Solar Thermal Installed? www.powertech-solar.com <ul><li>New Builds </li></ul><ul><li>With a Multi Fuel Thermal Store. For greater domestic hot water production it can be integrated with an Air Source Heat Pump. Will also supply warm water underfloor heating (see next slide) </li></ul><ul><li>With Twin Coil Cylinder to achieve an industry standard system </li></ul><ul><li>Retrofit </li></ul><ul><li>Either of the above </li></ul><ul><li>With a Thermix Valve which allows a solar thermal collector to be installed with minimum disruption </li></ul><ul><li>With a Combi Conversion Kit – the system by-passes combi when solar gain is high and acts as a preheat when solar gain is low </li></ul>The Powertech Apricus Solar Thermal Collector can be installed in a number of ways – either in vented or pressurised systems:
  6. 7. Cylinders & Heat Stores www.powertech-solar.com
  7. 8. Installations www.powertech-solar.com
  8. 9. Installations www.powertech-solar.com
  9. 10. Installations www.powertech-solar.com
  10. 11. The Apricus Solar Collector www.powertech-solar.com To follow is an overview of the Apricus product…
  11. 12. AP Solar Collector
  12. 13. Background <ul><li>AP Solar Collector is a British/Australian joint design, manufactured in Nanjing, China under Australian management. </li></ul><ul><li>Apricus is a worldwide registered trademark. </li></ul><ul><li>Apricus is latin for “attracting the sun”. </li></ul><ul><li>Currently exported to Europe, USA, Canada, the Middle East, Mexico, New Zealand & South Africa , Australia and many other countries. </li></ul><ul><li>Evacuated tube technology is taking over flat plate market share in most thermal solar markets. </li></ul>
  13. 14. Quality Certifications <ul><li>European quality and performance certification by SPF Switzerland (EN 12975-2: 2001, Section 5) </li></ul><ul><li>SRCC certification – entire USA </li></ul><ul><li>FSEC certification – Florida, CA, USA. </li></ul><ul><li>Australian Standard AS2712 – (Cert No.20405) </li></ul>
  14. 15. Collector Design <ul><li>Key design aims: </li></ul><ul><ul><li>Easy to install (plug in) </li></ul></ul><ul><ul><li>High efficiency – long term performance </li></ul></ul><ul><ul><li>Light-weight </li></ul></ul><ul><ul><li>Easy to transport </li></ul></ul><ul><ul><li>Attractive design </li></ul></ul><ul><ul><li>Reliability and long life </li></ul></ul><ul><li>Significant advantages over flat plate </li></ul><ul><li>Flexible use – domestic, commercial </li></ul><ul><li>Installation on almost any wall or roof surface </li></ul><ul><li>Installer friendly frame design </li></ul>
  15. 17. Evacuated Tubes <ul><li>Borosilicate Glass (3.3) </li></ul><ul><li>Glass-glass seal (not metal to glass) </li></ul><ul><li>Selective absorber coating (sputtered) </li></ul><ul><li>Thermal absorption of 92% </li></ul><ul><li>Excellent thermal insulation = performance </li></ul><ul><li>Passively track sun throughout the day </li></ul><ul><li>Silver (barium getter) vacuum indicator </li></ul><ul><li>Strong (excellent hail resistance) </li></ul><ul><li>Long lasting performance </li></ul><ul><li>Inexpensive and easy to replace if damaged </li></ul>
  16. 18. Heat Pipes <ul><li>Made from air-conditioner grade copper (0 2 free) </li></ul><ul><li>Startup temp of ~30 o C </li></ul><ul><li>Heat transfer thousands of times that of silver </li></ul><ul><li>Reliable - long life of 30+ years (8hours/day) </li></ul><ul><li>Individually performance tested </li></ul><ul><li>Freeze safe (controlled freezing) </li></ul>
  17. 19. Header (Heat Exchanger) <ul><li>Ag/Zn/Cu brazed potable grade copper </li></ul><ul><li>Contoured design for turbulent water flow </li></ul><ul><li>Heat pipe ports brazed to contoured pipes </li></ul><ul><li>Guaranteed tight metal-metal contact </li></ul><ul><li>Excellent corrosion resistance </li></ul><ul><li>Minimal pressure drop </li></ul><ul><li>Small water volume </li></ul>
  18. 20. Manifold Design <ul><li>Light, corrosion resistant, aluminium casing </li></ul><ul><li>50mm thick glass wool insulation </li></ul><ul><li>Silicone rubber seals (UV stabilised) </li></ul><ul><li>Lightweight </li></ul><ul><li>Attractive finish </li></ul>
  19. 21. Frame Design <ul><li>1.5mm 304-2B stainless steel </li></ul><ul><li>Rated to 180km/h winds </li></ul><ul><li>Pre-assembled </li></ul><ul><li>Nut-locks </li></ul><ul><li>Can slide left to right to match roof </li></ul><ul><li>Suits flat, low-pitched and pitched roofs </li></ul><ul><li>Silicone rubber pads for corrugated iron roofs </li></ul><ul><li>Roof attached straps for tiled roof </li></ul><ul><li>Rubbber pads for corrugated iron or asphalt roofs </li></ul><ul><li>Silicone rubber seals (UV stabilised) </li></ul><ul><li>Convenient tube attachment clips </li></ul>
  20. 22. Frame Design
  21. 23. Efficiency <ul><li>3 main variables </li></ul><ul><ul><li>Insolation/Radiation Level: G = 800 Watts/m 2 </li></ul></ul><ul><ul><li>Ambient Temp: Ta </li></ul></ul><ul><ul><li>Collector Temp: Tm </li></ul></ul><ul><li>Performance drops with increased temp differential: Tm>Ta </li></ul><ul><li>Performance drops more quickly with low insolation levels </li></ul>
  22. 24. Efficiency Curve CLOSE
  23. 25. Passive Tracking <ul><li>Tubes always facing sun (passive tracking) </li></ul><ul><li>Peak conversion at 40 o – no gaps & no shading </li></ul><ul><li>Flat plates only peak at midday </li></ul><ul><li>Minimal effect if not due North </li></ul>
  24. 27. System Design <ul><li>Installation in many countries – many formats </li></ul><ul><li>Domestic and commercial use </li></ul><ul><li>Suitable for open or closed Loop (glycol-water) </li></ul><ul><li>Can be configured for drain-back (end ports) </li></ul><ul><li>Suitable for mains pressure (<800kPa) </li></ul><ul><li>Suitable for potable water </li></ul><ul><li>Needs only slow water circulation (0.1L/tube/min) </li></ul><ul><li>Not suitable for chlorinated water (pool/spa) in open flow format </li></ul>
  25. 28. Standard Frame <ul><li>For suitably pitched roofs, the standard frame can be used. </li></ul><ul><li>What is a suitable pitch? </li></ul><ul><ul><li>Equal or greater than latitude </li></ul></ul><ul><ul><li>No less than 20 o </li></ul></ul><ul><ul><li>Equal to or greater than 40 o in areas with very large hail </li></ul></ul><ul><li>Able to be used on tiled , asphalt or corrugated iron roof s . </li></ul>
  26. 29. Standard Frame
  27. 30. Flat Roof Frame <ul><li>For flat surfaces the flat roof frame is used. </li></ul><ul><li>The feet can be round, or C channel style. </li></ul>
  28. 31. Flat Roof Frame
  29. 32. Low Pitched Roof Frame <ul><li>For a roof with insufficient pitch, a low pitched roof frame is used. </li></ul><ul><li>Attaches to the roof the same as the standard frame – can be used on tiled or corrugated iron roof. </li></ul><ul><li>Requires cutting of legs and rear-x brace if adjusting angle. </li></ul><ul><li>Angle range of 10-30 o on top of the roof pitch. </li></ul>
  30. 33. Low Pitched Roof Frame
  31. 34. Different Mounting Options <ul><li>Frame can be mounted on a wall. </li></ul><ul><li>Can be reversed to raise bottom of collector up. </li></ul><ul><li>Frame can be cut and new holes drilled as required. </li></ul>
  32. 35. Different Mounting Options
  33. 36. Commercial Applications <ul><li>Ideal for Commercial heating applications </li></ul><ul><ul><li>Caravan parks, Hotels, Schools (public showers/kitchen) </li></ul></ul><ul><ul><li>Restaurants (dish washing) </li></ul></ul><ul><ul><li>Industrial heating (supplement gas heating) </li></ul></ul><ul><ul><li>Absorption/Adsorption Chilling </li></ul></ul><ul><li>Max of 5 x AP-30 per bank, unlimited banks running in parallel. </li></ul><ul><li>Can run all in parallel with feed and return lines. </li></ul>
  34. 37. Other Renewable Energy Systems www.powertech-solar.com Photovoltaics Air Source Heat Pumps
  35. 38. Other Renewable Energy Systems www.powertech-solar.com Pool Heating Panels Micro Wind Turbines
  36. 39. www.powertech-solar.com Thank you.

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