Design principle of energy storage water heater to prevent dry burning

What are the principles of sensible heat storage systems involving water?

Principles of sensible heat storage systems involving water Hot water stores are today based on water contained in tanks made of steel, stainless steel, concrete or plastic or by water volumes placed in envelopes consisting of different watertight materials.

How does a gas-fired storage water heater work?

High-efficiency, gas-fired storage water heaters are designed to heat water by using energy directly from the combustion process, and from latent heat collected by condensing water vapour in the combustion gases.

What are the thermal characteristics of a hot water store?

The most important thermal characteristics for hot water stores are: heat storage capacity, heat loss, heat exchange capacity rates to and from the hot water storage and temperature stratification in the hot water store.

Is water a suitable heat storage material?

Consequently, water is a suitable heat storage material, and water is today used as a heat storage material in almost all heat stores for energy systems making use of a heat storage operating in the temperature interval from 0 °C to 100 °C. 2.2. Principles of sensible heat storage systems involving water

How does a hot water store design affect thermal stratification?

An appropriate hot water store design can therefore create large temperature differences in a hot water store. In other words, a strong thermal stratification can be established in the hot water store: high temperatures in the top and low temperatures in the bottom.

What is hot water storage & how does it work?

As with chilled water storage, water can be heated and stored during periods of low thermal demand and then used during periods of high demand, ensuring that all thermal energy from the CHP system is eficiently utilized. Hot water storage coupled with CHP is especially attractive in cold northern climates that have high space heating requirements.