As with all ground works there can be a mess, however Teckna Group try to minimise mess and disruption to your garden or premises by utilising specialised drilling and separation equipment.
Read More →Pipework Insulation?
All header pipework (pipe work that connects the boreholes) installed to MIS 3005 standards will be below the local frost line and is usually 1.0m deep with flow and return pipes seperated in a 500mm wide trench or individual trenches to suit. Working on thes guidelines insulation would only be required should the flow and […]
Read More →What size loops are required?
Below 110m deep – 32mm loops. Over 110m deep – 40mm loops. Depths between 100 to 120m may use both. Loops should be sourced from a reputable manufacturer, be manufactured of PE100+ polymer with an SDR rating of 11 (not inferior PE80 SDR17) and be suitably pressure tested with water (not air) before installation into […]
Read More →How far apart should loops be spaced?
Loops should be at least 6m apart to avoid thermal linkage, but this again can vary depending on the ground strata. Loops should be at least 5m away from buildings and walls, as well as siting well away from trees.
Read More →The following calculation can be employed using an average value of 35W/m.
Heat Pump capacity in KW 12KW (Heating an average family 3-4 bed house with reasonable insulation) Assumed COP, ie, coefficient of performance of 4, i.e. for every 1KW input, 4Kw of heat are output. Or to look at it another way, 1kW of electricity put in (to drive the pump etc.) liberates 4 from the […]
Read More →How many boreholes and how deep?
As the boreholes are part of a bespoke system design your heat pump supplier/installer should be able to provide this critical information, however for an approximate calculation see below. Vertical Boreholes Vertical borehole heat collectors usually operate at a higher efficiency, i.e. produce a higher heat yield per metre, than horizontal collectors. They are […]
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