The boiler always maintains the set temperature. Wouldn’t it be better if the temperature is set high in order to have as little electricity costs as possible when used? At a high temperature, I have to use less hot water from the boiler.
Answer
You asked: Should the boiler for hot water be set at a high temperature for economical consumption?
I don’t think so, because it is not because you need less hot water that you do not use the same amount of energy: whether you use water at 90 degrees and add cold water to a bath of, for example, 35 degrees, or you use water at 60 degrees to have an equally full bath of 35 degrees, that requires the same amount of energy in total: it is always about bringing a full bath to 35 degrees.
In addition, your boiler has a fixed volume: so it costs you less energy to have a full boiler at 60 degrees than one at 90 degrees. Obviously, you will run out of hot water more quickly if you want to take several baths.
Answered by
ir Jürgen vangeyte
research engineer harvest and post-harvest technology, sensor and imaging technology
Burg. van Gansberghelaan 96 box 1 9820 Merelbeke
http://www.ilvo.vlaanderen.be
.