Project Description

SOLAR COLLECTOR

All the care and 70 years of solar collector innovation have matured solar collectors over the years in to several forms from the evacuated tube, heat pipe and collector versions and circulating different gases and fluids through to ensure maximum heating. In the past, the installed base of solar thermal systems was measured in terms of collector area (square meters or square feet) rather than in terms of installed capacity to produce heat and as a consequence, solar thermal was not easily comparable with other (renewable) energy sources and with other panels and thus was often left out of relevant statistics. KODSAN and CSL have according to the German Quality standards received a efficiency rating of 78% which is among the highest efficiency per square meter and is of a higher efficiency than any other form of solar water heating panel when used with EU standardized thermal fluid. Apart from the usual EU standards our panels qualified for an A** rating for efficiency by the solar Keymark certificate; a German based solar testing company that defines the solar industry increasingly globally.

SPECIFICATIONS

Key Features

  1. Solar KEYMARK Certified
  2. Full Selective Titanium Coated Aluminium Surface
  3. Laser Welding
  4. Copper Pipe
  5. Low Iron Tempered Glass
  6. Rock Wool Insulation
Absorber Material Copper Almeco-Tinox Highly Selective Aluminium
Absorber Thickness 0.3mm
Absorptance 0.97
Emittance 0.0039
Welding Method Laser Welding
Heat Carrier Volume 1.27 lt
Dia. of Absorber Tube 8 /10mm
Absorber tube wall thickness 0.45mm
Dia. of header tube 18 / 22mm
Header tube wall thickness 0.7mm
Number of tube 12 / 12
Tube pitch 110mm
Glass material Low Iron Tempered Glass
Transmittance of glass 0.91
Thickness of glass 4mm
Insulation material Rock Wool
Thermal conductivity 0.037W/mK
Heat capacity of wool 0.84 kJ/kgK
Density of wool 52 kg/m3
Thickness of wool 50mm
Stagnation temperature 232°C
Maximum Operation Pressure 10 bar
Test Pressure 25 bar
Nominal Flow Rate 120 lt/h
Base Sheeting Embossed – Finished Aluminium

CROSS SECTION

Thick toughened glass with slight elasticity is very difficult to break and each panel face contains 30,000 magnifying glasses focused to the risers and are also corrugated internally to minimize heat escaping from the surface. For places where space is limited and water heating as well as electricity is required CSL & Kodsan have Hybrid panel glass whereby the surface contains PV cells as well, the result is a panel that has more output in terms of electricity (fluid absorbs extra heat that causes PV cell efficiency) than a normal panel but less output in terms of water heating ability should that option be used.

All copper riser Protrusions are coated with brass and lined with stainless steel to ensure the threads never leak once installed.

The frame is made from Aluminium profile and sprayed with 2 coats of electrostatic zinc powder and lined with soft all weather rubber. All mounting kits for all roof or ground surfaces are also Zinc electrostatically painted steel.

The panel risers are 90% copper with the remainder being zinc and nickel which give the panel a high tolerance to thermal fluid temperatures and a very long corrosion free life. Rather than using thick risers which have poor contact with the fluids our panels employ the use of more risers of a smaller diameter giving a higher net ratio of copper to fluid. The copper is coated on top with zinc powder paint which ensures that heat collected by the copper risers is reflected in to the fluid within rather than be emitted in cloudy weather or at night. Each pair of risers have a sub riser beneath the absorption plate to pick up on any latent heat.

Below the copper is an aluminium-zinc (hence the blue shade) plate. Rather than using fins or focused foil the aluminium plate is designed to retain heat for long periods rather than emit the heat as a copper plate does. Since the glass is already focused the aluminium does not need to be corrugated therefore allowing a full collector plate with a higher net absorption area per square meter and allowing Laser welding which is the most faultless and efficient way of ensuring heat transmission and sealed joints for life.

Beneath the aluminium is a small empty space followed by high density 50mm rock wool insulation, a dual layer of styrofoam, glass wool insulation and finally a Aluminium board base which has anti-fungal properties and does not allow the cold area on the roof normally shaded by the panel to penetrate in to the panels. All our panels come in different sizes and we combine them with the thermal tanks in varying levels depending on area radiation levels, space available and consumption in a particular project but in general the panel areas dedicated are 2.1m² per 150L of water that requires heating if using glycol or 1.8m² per 160L of water if using thermal fluid.

FREE SURVEY & QUOTE

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OFFICE LINE

+254 780 778444

EMERGENCY

+254 710 565920

WORKING HOURS

8:00am – 6:00pm

OFFICE LINE

+254 780 778444

EMERGENCY

+254 710 565920

WORKING HOURS

8:00am – 6:00pm