19-02-2013, 09:43 AM
Hot tap water production by means of a directly fired boiler
Introduction
The hospital in this case is a medium-sized institution, with steam generated
centrally by means of two boilers.
Present situation
The hot tap water is currently produced by means of steam from the two boilers,
together with another two water heaters. The hot tap water consumption is
around 100 m³ per week.
Proposal
Steam is a very expensive form of energy. In the present situation the steam is
first generated at a high temperature and then used to heat water to a
temperature of 70°C. It is more efficient to produce hot tap water by means of a
directly fired boiler. This method also avoids the losses that occur during steam
generation and transport.
Estimated savings & investment
The savings are achieved in terms of the efficiency of the hot water generation.
The efficiency of a directly fired boiler is higher than that of a steam boiler and
the associated steam transport efficiency.