relation: http://miis.maths.ox.ac.uk/miis/240/
title: Freeze protection in gasholders
creator: Hewitt, Ian
creator: Taroni, Michele
creator: Slim, Anja
creator: Byatt-Smith, John
creator: Ockendon, John
creator: Howell, Peter
creator: Bauer, Robert
creator: Somani, Sapna
creator: Blyth, Mark
creator: Parau, Emilian
creator: Purvis, Richard
creator: Parker, David
creator: Hjorth, Poul
creator: Duursma, Gail
subject: Energy and utilities
subject: None/Other
description: In cold weather, the water seals of gasholders need protection from freezing 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 investigate 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.
date: 2008
type: Study Group Report
type: NonPeerReviewed
format: application/pdf
language: en
identifier: http://miis.maths.ox.ac.uk/miis/240/1/NationalGrid-FreezeProtectionInGasholders.pdf
identifier:   Hewitt, Ian and Taroni, Michele and Slim, Anja and Byatt-Smith, John and Ockendon, John and Howell, Peter and Bauer, Robert and Somani, Sapna and Blyth, Mark and Parau, Emilian and Purvis, Richard and Parker, David and Hjorth, Poul and Duursma, Gail  (2008) Freeze protection in gasholders.  [Study Group Report]