Abstract
A model, describing the heat transfer coefficients in the mantle
of a mantle tank has been developed. The model is validated by
means of measurements with varying operational conditions for
different designed mantle tanks. The model has been implemented in
an existing detailed mathematical programme that simulates the
thermal behaviour of low flow SDHW systems. The yearly thermal
performance of low flow SDHW systems with different designed
mantle tanks has been calculated. The influence of the mantle tank
design on the thermal performance is investigated by means of the
calculations with the programme and by means of tests of three
SDHW systems with different designed mantle tanks. Based on the
investigations design rules for mantle tanks are proposed. The
model, describing the heat transfer coefficients in the mantle is
approximate. In addition, the measurements have revealed that a
temperature stratification in the hot water tank, above the mantle
is built up. This phenomenon may be important, but it is not taken
into calculation in the programme. Therefore, theoretical and
practical work is continuing in order to make a more precise model
for the whole mantle tank.
| Original language | English |
|---|---|
| Title of host publication | EuroSun'96. 10. Intertionales Sonnenforum. Proceedings |
| Place of Publication | Müchen |
| Publisher | DGS Sonnenenergie Verlags |
| Publication date | 1996 |
| Pages | 369-375 |
| Publication status | Published - 1996 |
| Event | EuroSun 1996 - Freiburg, Germany Duration: 16 Sept 1996 → 19 Sept 1996 |
Conference
| Conference | EuroSun 1996 |
|---|---|
| Country/Territory | Germany |
| City | Freiburg |
| Period | 16/09/1996 → 19/09/1996 |