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polystyrene
the iron becomes hottest because it is a conductor of heat
white
This is a pump that circulates water in a water storage cylinder. Stratification is the layering that occurs naturally because of temperature. This is where the ozone layer, called the stratosphere gets its name. Anyway back to the pump. This is present to mix the water in the storage vessel so that there are no layers of different temperatures if left to stand for some time. Standing water can introduce things like legionella bacteria growth.
So the steam can rise from the boiler to the hot water tank storage
Hot water
This is to allow for expansion of the hot water-- otherwise the cylinder would blow up.
The comparative of hot is hotter.The superlative of hot is hottest.
Indirect Hot Water System.
the hot water temperature will not reduce due to atmosphere temperature.
A tray place under the cylinder designed to catch any water that may leak and also available with an overflow to take the water away to a drain or outside, preventing structural damage caused by water leaks.
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