Thernamic Ground Collectors
The ground collector is a vital part for any heat pump installation, it is important that these are sized and installed correctly. Vent-Axia has made considerable effort to simplify this and provide pre-tested and pre-formed ground arrays.
Horozontal ground collectors known as 'Slinkies' are generally the most cost effective way of installing a ground array, due to their ‘looped’ design approximately every 1m of trench contains 5m of pipe.
Vent-Axia can supply 3 different lengths of slinkies specified as 30, 40 or 50m.
Please note the length specified is the trench length that the slinky fits in and not the amount of pipe within the slinky.
Each slinky length is made from a straight header pipe, a coiled section (which is the energy absorbing part of the slinky) and a straight return pipe.
| No: 444295 Tel: +44 (0)844 856 0590 for ordering enquiries |
Product Specification
Our slinkies are manufactured using black MDPE (Medium Density Polyethylene) pipe, with a pressure rating of PE80.
Blue pipe is not acceptable, as Water Resources Council guidelines denotes that it contains only fresh water, which would be unacceptable as ground arrays contain antifreeze.
All slinkies are leak tested before they leave the factory and this is indicated by the coloured cable tie on the return pipe.
Yellow—50m Slinky
Green—40m Slinky
Purple—30m Slinky
| Thernamic Ground Collectors |
| Description | Header (a) | Coiled section (b) | Return (c) | Pipe OD | Total length |
|---|---|---|---|---|---|
| GC 30 | 25 m | 30 m | 55 m | 32 mm | 200 m |
| GC 40 | 25 m | 40 m | 65 m | 32 mm | 250 m |
| GC 50 | 25 m | 50 m | 75 m | 32 mm | 300 m |
Performance
The amount of solar energy that lands per square metre is more or less the same anywhere in the UK. Therefore the amount of energy available for heat energy absorption by ground arrays is not affected greatly by different soil types. As a rule the formula of 10 metres of trench to provide 1 kW of delivered heat from the heat pump can be more or less uniformly applied across most of the UK.
