powered water heaters are to volume variable with plunger sliding separation of cold water from the hot water

摘要

a boiler has a sliding plunger which define two volume variable chambers, one for feeding cold water and the other for the heating and the levy of warm water.during the drawing of hot water on the plunger is thanks to the action of the pressure of network; the exhaustion of the hot water pump shall ricircolare automatically the water from a camit was to the other with relative sliding of the plunger, thereby enabling to vary the volume of water to warm up in relation to the needs of use. (single figure).