In cold weather, the water seals of gasholders need protection from freez-
ing to avoid compromising the seal. These holders have a large reservoir
of “tank water” at the base which is below ground. At present freeze-
protection is achieved by external heating of the seal water which is in a
slotted channel called a cup. Electrical heating or circulation of heated
tank water to the cup are examples of systems presently used. The tank
water has a large thermal capacity and National Grid wishes to inves-
tigate whether circulation of the tank water without external heating
could provide sufficient energy input to avoid freezing. Only tanks in
which the tank water is below ground are investigated in the report.
The soil temperature under the reservoir at depth of 10m and lower is
almost constant.
Place of Publication | Heriott-Watt University |
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Publisher | The Smith Institute |
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Publication status | Published - 2008 |
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