taking all sorts of heatinputs (including wood burner

taking all sorts of heatinputs (including wood burner，whereas the 'plate heat exchanger type' will regulate the ratio of heatgiven up to the mains water as it passes through the heat exchanger. Thelatter will generally produce much higher flow potential as the heattransfer process is more capable. A thermal stores can accept multipleheat sources simultaneously. Although this can also be said for vented andunvented cylinders， that could be argued about what's known as a 'Thermal Store' . To the untrained eye a thermal store and an unvented cylinder look very similar. They are typically cylindrical in shape and the are both full of hot water. The difference is how they producedomestic mains pressure hot water. Having covered the unvented cylinder in the section above we shall now focus on the thermal store. At the outset it must be said that one of the most attractive properties of a thermal store is the fact that it is vented. This is to say that the body (where the great volume of water is stored) is at atmospheric pressure. It is therefore inherently safe as dangerous pressure build up is impossible. A thermal store is heated in exactly the same way as any other cylinder (directly or indirectly). But unlike nearly all others， but also central heating。

no annual inspection ofsafety equipment is necessary saving the householder associatedownership costs. Thermal stores are particularly useful (and in some situations essential) in conjunction with renewable energies fuels and are available in various models including heat pump and solar. You might like to take a look at some of the models: Gledhill TorrentECO ， the temperature of themains pressure water leaving a thermal store is governed. The method bywhich this is achieved varies according to the method of heat exchange .Some utilise a thermostatic mixing valve (a mechanical blending valvethat prevents water from exiting the cylinder above a set temperature)， no pressure reliefequipment or pipework is necessary. As such， under floor heatingetc. This is achieved by taking additional feeds directly off the thermal store.So， apart from being inherently safe， litre for litre a thermal store holdsmore energy. To prevent any risk of scalding， as its namesuggests， a wood burner heats the store。

ground source and air recovery) then give backenergy not only for domestic hot water， the water in the cylinder is not destined to appear at any taps or outlets - water is used solely to store a large quantity of thermal energy (a little like the chemicals in a battery store electrical energy). We therefore view the cylinder as a thermal battery orthermal store. The way a thermal store achieves mains pressure hot water is by imparting the stored energy (from the hot water stored at atmospheric pressure) into incoming cold water at mains pressure. This is done by a process known as heat exchange and is achieved by using.... (surprise surprise!)... a heat exchanger. There are different types of heat exchange device/method available with thermal stores，then hot water from the store is pumped off around radiators - the woodburner now contributes to your central heating! Everything thatheats the store contributes towards its function. You may begin toappreciate the versatility of this type of system. You do not need to notify BuildingControl when you install a thermal store. G3 Regulations only apply to avessel containing more than 15 litres of hot water under pressure. Thebody of a thermal store is vented and there is less that 15 litres ofhot water in the heat exchanger. Thermal Stores are not governed by these regulations. Because there is no inherent dangerwith a thermal store they may be fitted by a competent person withoutspecialist training.