High efficiency collectors

DISTRIBUTION

We install complete installations is in the Hampshire, Dorset, and Wiltshire area, and supply and deliver DIY kit anywhere in the UK.

The system is easy to fit, and would suit a DIY enthusiast with some plumbing knowledge. It is recommended that access to the roof is by means of a professionally erected scaffolding with safety rails. Easy to follow installation manual included with the kit.

DESIGN & QUALITY

High quality products, service, and efficiency.
10 year guarantee on solar tubes, 3 years on parts and labour Green Energy - Reduces carbon pollution and global warming

Does not require direct sunshine, but operates on radiated light, so will still produce heat on a cloudy day.

International quality and performance certification.

Comprehensive 10 year warranty.

Evacuated tube and heat pipe.

Evacuated tubes provides excellent thermal insulation giving high efficiency.

Round solar tube shape provides stable heat output, see daily light exposure curves below.

Copper heat pipes provide rapid heat transfer.

Plug in heat pipe system for fast, trouble free installation and maintenance.

MANIFOLD

Thick glass wool insulates against heat loss.

Environmentally friendly glass wool made from recycled sources.

MOUNTING FRAME

304 stainless steel frame components for strength and corrosion resistance.

Mounting frames to suit pitched or flat roofs.

Diagram showing a single
heating pipe (above).

SOLAR HEAT ABSORPTION

The absorber of the evacuated tube is the black coating on the inner tube. This special selective coating is excellent at absorbing solar energy (92%), while only reflecting a small amount (8%). The sunlight passes through the clear outer tube, and is absorbed by the inner tube, raising the temperature inside. A vacuum between the two glass tubes greatly reduces any heat losses, improving performance in cold weather.

SOLAR HEAT TRANSFER PIPE

The pipe has a small amount of transfer fluid in it. The tube has the air removed, forming a vacuum. Because the tube is at low pressure, it boils and turns to steam at 30°c. The steam rapidly transfers heat to the tip of the pipe, which is plugged into the header manifold.

The heat pipe condenser is plugged into a header manifold through which the water is circulated. As water flows through the manifold header pipe it absorbs heat, which is returned into the storage cylinder. By repeating this process over and over, the water is heated.

SYSTEMS

Closed (Pressurised System):
A twin coiled hot water cylinder is required to replace the existing. The solar collector heats a transfer fluid which is circulated by a pump through the solar coil of the cylinder, and back to the collector. Heat is transferred to water in the cylinder from the solar coil.

An expansion vessel is fitted to protect against any expansion of the transfer fluid that may occur in the system due to circulation pump stopping ie. Power failure.

PERFORMANCE CURVE

Below is a performance graph comparing the vacuum tube solar collector and a flat plate panel.

SOLAR TUBE SHAPE & SPACING

The cylindrical shape of the evacuated tubes ensures they are always facing the sun, unlike flat plate collectors that only face the sun at midday. Evacuated tubes are also spaced close together to minimize any light losses between the tubes.

These two factors result in stable heat output from mid morning through to mid afternoon. Flat plate collectors provide peak output only at midday, when the sun is directly overhead.

SYSTEM PRICE
Discounted kits with all you need to 'Go Solar' - suitable for most domestic installations. Excluding VAT and delivery.

Small
£1450
STK01

Large
£1900
STK03

To suit cylinder size:

The choice of how many tubes you require will vary with each application and location. For the UK climate we would always fit 58mm diameter tubes, ensuring a higher all year round performance.

All of our collectors come with a 10 year guarantee, are manufactured under ISO9001:2000 and certified to EN12975.

High Performance SP ETA Evacuated Tube Collectors
58mm x 1800 Heat Pipes - Black Powder Coated 304-Grade Stainless Steel

Prices exclude VAT and Delivery

3 - 4 Bedroom House
(Medium Capacity)
190 - 210 Litres