How does it work
Current Household heating system
The majority of households and buildings are equipped with steel plate radiators generating a comfortable heat due to the heat exchange of the hot water provided by the gas-boiler. These boilers are set to a standard minimum of 75°C of hot water.
The warm water is circulated around the radiators, inside the radiator the plates are heated up then, the warm surface of those together with the air makes the heat exchange. The air warms up, expands, becomes lighter and lifts, while the cooler air drops. This circulation process is called convection and the speed is limited due to the laws of physics.
The Heatfan is a unit dispersing constant heat the same temperature as the radiator. As soon as the warm water starts circulating round the radiator, the surface of the radiator warms up and at 27°C the Heatfan switches on.
The Heatfan contains fans, these pull/push the air in a vertical direction through and alongside the steel plate radiator. This air is warmed up, and the heat exchange is accelerated and increased by 15-20 %, compared to the situation without the Heatfan.
As soon as the water circulation stops – when the required temperature is reached – the radiator cools down, Heatfan will continue working until the temperature drops to 26°C then the Heatfan will switch off.
On a per annum basis the Heatfan will operate about 1400 to 1800 hours, consuming in total less than 1 kWh (kilowatt) of electricity (under £0.25p).
Tests have confirmed that Heatfan provides an increase of heat exchange between 15 to 20% as standard.
What to do with the extra capacity
The extra heat exchange can be used to enjoy comfort quicker and give more efficient energy use. If the current comfort already feels good, one of the options is to swap or remove a radiator, or to save gas by reducing the temperature of the circulating water - the Gas boiler temperature of 75°C can be reset to for example to 60 or 65°C, retaining the same capacity than before the Heatfan. This can lead to significant savings on gas up to as much as 15-25% !!
The high efficient Gas boilers are build in such way so that the heat in the smoke gases are used to pre-heat the return circulated water in an exchanger.
This efficiency is increasing significantly, if the return water is cooler (mainly during the heat exchange), the water in the smoke gases is now condensing. The lower the return water temperature the higher the efficiency.
The resetting can be done during the yearly maintenance, or by yourself. If you provide us the boiler type we can assist by mailing you the manual with the specific procedure.
The Heatfan team