Geyser blanket installations
Alpha Design Electrical
Geyser Repairs, Affordable Electrician, Electrical Contractors Cape Town
A geyser blanket is an additional layer of insulation designed to be wrapped around the geyser. Most products available typically consiss of a 50mm layer of glass fibre insulation with a reflective foil sheeting cover on one side. However the thicker the insulation the better (100-150mm is not much more expensive but it is twice or three times as effective).
Electrical geysers heat water by means of a large electrical element similar to that found in your kettle. They have a thermostat that switches the heating element off when the water reaches a preset temperature. That thermostat will also switch the heating element back on if the water drops below another lower preset temperature.
Once the water is heated, it slowly starts to cool via heat transfer out of the geyser through the geysers’ insulation as well as via cooling of the water in the hot water pipes leading out of the geyser. The slower this cooling happens, the less often the geyser element is switched on to heat the water and hence the less electricity is consumed.
The repeated re-heating of water between times that anybody actually uses any hot water, is very wasteful, because energy is consumed simply redoing what was already done before. As far as possible this should be reduced.
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