We have to say goodbye for a little…
When designing heating systems you would first calculate any heat losses along with the demand for hot water. The higher the insulation standard the lower the heating requirement of the building.
A heating system design is based on the worst case scenario. This means full demand on the system with an outside air temperature of approximately minus 2 degrees centigrade. However, these conditions only prevail on perhaps 8 days a year. The rest of the time a large capacity boiler is not working efficiently.
Combined heating and hot water systems involve using two or more different heat sources. For example, solar thermal panels can provide most of the domestic hot water requirements for a family home throughout the summer months with barely a sign of a carbon footprint. A heat pump or traditional boiler can cover the demand for the remainder of the year.
If a wood burning stove with a back boiler is added to the system, this can contribute another 12 kW’s which again is carbon neutral heat source and would probably provide sufficient heat for most of the year.
In times of severe weather or when the stove is not lit, then the system can be backed up with an air source heat pump or condensing gas or oil boiler. An air source heat pump is an extremely efficient way of producing hot water for both domestic use and central heating.
Obviously, a condensing gas or oil boiler will not be eligible for RHI but with up to 94% efficiency, push button convenience and limited use, they may prove valuable to the overall system design.
Control of the system is of the utmost importance to gain the maximum efficiency and lowest carbon footprint. Addition of weather compensation to the controls adds a further sophistication.
With modern underfloor heating systems you have complete room temperature control. There are no cumbersome radiators occupying valuable floor space. Lower fuel bills due to lower water temperatures. Comfortable warmth for all your heating needs. Furthermore, warm dry floors create a hostile environment for dust mites. Underfloor heating also reduces the danger of damp and condensation getting into walls. The low amount of air movement during heat transmission will also help prevent airborne dust.
Water circulates through the underfloor heating pipes at around 40C. This in turn heats the floor to a surface temperature of 25 – 28C (approx. 70C through a radiator system). These systems are economical to run, virtually maintenance free and provide the most comfortable warmth consistently.
A typical ground floor installation will involve laying insulation above the original concrete slab to ensure minimal heat losses. Fitted to this would be a flexible pipe with no joins within its length. Depending on your room layout one of our trained engineers will decide how best to lay your pipes to optimise efficiency. Covering the pipes would be either a dry or liquid screed. To minimise heat losses and take up any expansion, a foam insulation strip is fitted around the edge of the room. Your choice of flooring will then be laid on top of this. If your project is not a typical installation then don’t fret as there are many ways to install under floor heating, the smallest being an overlay just 16mm thick.
Our supply, survey and installation service covers the following areas: Bournemouth, Christchurch, Dorchester, Poole, Romsey, Salisbury, Southampton, Wimborne and Winchester and other areas in Dorset in Hampshire. Site surveys outside a 30 mile radius of Wimborne will incure a charge a £25 which is deductable should you accept our quotation. We are also pleased to invite enquiries from further afield.