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Powertech and Apricus Solar Thermal

Powertech and Apricus Solar Thermal

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Powertech1 Powertech1 Presentation Transcript

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