welcome to Stainless-Steel-Rails .co.uk

Hot water from the boiler circulates through a heat exchanger (usually a coil) within the cylinder. Avoids the problems of mixing boiler water with the water in the storage vessel.
Hot water usage varies with the type of building, it uses and the number of occupants. Occupant usage may vary depending on their level of activity, age, and water usage by appliances etc.
In modern homes hot water usage can vary between 35 and 45 litres per person per day, with hot water at between 60 - 65 degrees centigrade.