Daltons Law of Partial Pressures states that; In a mixture of steam and air, the total pressure is the sum of the partial pressure each gas would exert, when occupying the total volume on its own. For example, if the total pressure of a steam/air mixture at 2 bar (absolute) is made up of
Back to Basics: Venting for Gas-Fired Boilers | Kefid
Vented vs Unvented Hot Water Cylinders | Boiler Guide
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Does a boiler cupboard need ventilation? | Viessmann
Jun 03, 2015 · Running costs will be affected by your cylinders heating method. Vented and unvented cylinders can be heated either directly or indirectly. Indirect heating system: Most cylinders are indirectly heated. This means that the cylinder is connected to an external boiler by a heat exchanger. The boiler is usually powered by gas which is considerably cheaper than electric or solar energy which is free.
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