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When DHW is used, a combination boiler stops pumping water to the heating circuit and diverts all the boiler's power to heating DHW. Some combis have small internal water storage vessels combining the energy of the stored water and the gas or oil burner to give faster DHW at the taps or to increase the DHW flow rate. [2]
The structure of the rail station can also have an effect on dwell times. Narrow platforms, structural elements in front of doors, or generally poor access in and out of the station, can all have an effect on dwell times. Passengers need to wait within the train for others to move away, so that they may alight.
Watchful waiting (also watch and wait or WAW) is an approach to a medical problem in which time is allowed to pass before medical intervention or therapy is used. During this time, repeated testing may be performed.
DHW Fototechnik, a successor to the German Franke & Heidecke company manufacturing the Rolleiflex medium format cameras and slide projectors between 2009 and 2015 Topics referred to by the same term This disambiguation page lists articles associated with the title DHW .