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Reusable Energy and Radiant Heating

Reusable Energy and Radiant Heating

21/7/2007

As the use of Solar Panel energy is now subsidised to the tune of AU$8000.00 by the Australian Federal Government, many householders may wonder what electrical central heating system is preferable to combine this with. As we all know, providing winter comfort consumes a significant part of the household budget and diligent foresight is a must if you are to minimise these financial pressures.

The prudent customer considering solar power will be seeking to get credits for excess power generated. In turn, they can reap the benefit of the credit back to them when their consumption is in excess of their solar supply. Others in outback areas where grid power is not available will have other generation means and possibly battery banks to store energy.

It makes sense that when using solar power generation for subsidising your grid supply; the lower the loading the central heating system has, the further your credits will go.

The following general criteria are a guide:

In-Slab Cable (Off Peak Power)

160W/m2 e.g. 200m2 requires 32,000 watts (32.0 KW)

Under Tile/Carpet for Living Areas

130W/m2 e.g. 200m2 requires 26,000 watts (26.0 KW)

Bathrooms

160-180W/m2

In Ceiling Thin Heating foils

55-75W/m2 e.g. 200m2 requires 15,000 watts (15.0 KW)

100W/m2 approx. at up to 4.5m Ceiling Height

Note: In Ceiling Heating requirements must be calculated using a "Steady State Heat Loss Analysis"

Radiant heating has a number of advantages: it is more efficient than baseboard heating and usually more efficient than forced-air heating because no energy is lost through ducts. The lack of moving air can also be advantageous to people with severe allergies.