The aim of the project is to compare different methods used for
testing small solar domestic hot water tanks. A small hot water
tank is tested at three different European laboratories by means
of the test methods normally used at the laboratories. The tank is
marketed in Denmark.The test carried out at the Department for
Buildings and Energy compromises determination of the heat loss
coefficient for the tank and the heat transfer coefficient for the
auxiliary helix. A dynamic test is performed and a simulation
model of the tank is made and validated against measured energy
quantities and temperatures. The annual thermal performance for a
solar domestic hot water system based on the tested tank is
calculated. Further, proposal for a future test on mixing during
draw-off as well as proposal for a maximum acceptable mixing
during draw-off is given.
Number of pages | 29 |
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Publication status | Published - 1998 |
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