Water heating is a
thermodynamic process using an energy source to heat
water above its initial temperature. Typical domestic
uses of hot water are for cooking, cleaning, bathing,
and space heating. In industry, both hot water and water
heated to steam have many uses.
Domestically, water is traditionally heated in vessels known as water heaters. These metal vessels heat a batch of water but do not produce a continual supply of heated water at a preset temperature. The temperature will vary based on the consumption rate of hot water, use more and the water becomes cooler.
