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Water filled, uninsulated heat storages in rock. Usability study; Vesitaeytteiset, eristaemaettoemaet kalliolaempoevarastot. Kaeyttoekokemusselvitys

Technical Report:

Abstract

Research concerning possibilities of heat storage in uninsulated, water-filled rock caverns has been actively going on from the 1980`s in Finland. In Sweden, where the bedrock and the system of energy production are alike those in Finland there are, already, several rock storages in operation. All the storage studies here have functioned well technically. Any severe risks of rock unstability have not existed in the accurate temperatures (under 100 deg C). Precipitation and liquidation problems have been successively solved with filters. water processing and special materials in certain parts of equipment and pipelines. Heat losses from the storages have been about 10-25 % in the stationary state. The risks for extra heat losses observed in two storages seem to be connected with the water tunnels above the storage spaces and the probably existing fracture zones between the space and the tunnel. The storages constructed by the moment are individual cases and remarkable amounts of public financial support and research activities have been directed to them. So, final conclusions of costs of storage projects can`t be drawn. Nevertheless, a Finnish feasibility study on an old gasoline cavern to be converted into a heat storage has proved the project economical and promising.  More>>
Authors:
Vaeaetaeinen, A; Ritola, J; [1]  Sipilae, K [2] 
  1. Technical Research Centre of Finland, Espoo (Finland). Road, Traffic and Geotechnical Lab.
  2. Technical Research Centre of Finland, Espoo (Finland). Lab. of Electrical and Automation Engineering
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
VTT-TIED-1335
Reference Number:
SCA: 250600; 142000; PA: FI-92:003429; SN: 93000918038
Resource Relation:
Other Information: PBD: 1992
Subject:
25 ENERGY STORAGE; 14 SOLAR ENERGY; ROCK CAVERNS; HEAT STORAGE; ENERGY STORAGE SYSTEMS; THERMAL ENERGY STORAGE EQUIPMENT; HEAT LOSSES; FINLAND; SWEDEN; SOLAR ENERGY; SUBSURFACE STRUCTURES; WATER; TEMPERATURE DEPENDENCE; 250600; 142000; THERMAL
OSTI ID:
10111599
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE93752856; ISBN 951-38-4148-0; TRN: FI9203429
Availability:
OSTI; NTIS
Submitting Site:
FI
Size:
76 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Vaeaetaeinen, A, Ritola, J, and Sipilae, K. Water filled, uninsulated heat storages in rock. Usability study; Vesitaeytteiset, eristaemaettoemaet kalliolaempoevarastot. Kaeyttoekokemusselvitys. Finland: N. p., 1992. Web.
Vaeaetaeinen, A, Ritola, J, & Sipilae, K. Water filled, uninsulated heat storages in rock. Usability study; Vesitaeytteiset, eristaemaettoemaet kalliolaempoevarastot. Kaeyttoekokemusselvitys. Finland.
Vaeaetaeinen, A, Ritola, J, and Sipilae, K. 1992. "Water filled, uninsulated heat storages in rock. Usability study; Vesitaeytteiset, eristaemaettoemaet kalliolaempoevarastot. Kaeyttoekokemusselvitys." Finland.
@misc{etde_10111599,
title = {Water filled, uninsulated heat storages in rock. Usability study; Vesitaeytteiset, eristaemaettoemaet kalliolaempoevarastot. Kaeyttoekokemusselvitys}
author = {Vaeaetaeinen, A, Ritola, J, and Sipilae, K}
abstractNote = {Research concerning possibilities of heat storage in uninsulated, water-filled rock caverns has been actively going on from the 1980`s in Finland. In Sweden, where the bedrock and the system of energy production are alike those in Finland there are, already, several rock storages in operation. All the storage studies here have functioned well technically. Any severe risks of rock unstability have not existed in the accurate temperatures (under 100 deg C). Precipitation and liquidation problems have been successively solved with filters. water processing and special materials in certain parts of equipment and pipelines. Heat losses from the storages have been about 10-25 % in the stationary state. The risks for extra heat losses observed in two storages seem to be connected with the water tunnels above the storage spaces and the probably existing fracture zones between the space and the tunnel. The storages constructed by the moment are individual cases and remarkable amounts of public financial support and research activities have been directed to them. So, final conclusions of costs of storage projects can`t be drawn. Nevertheless, a Finnish feasibility study on an old gasoline cavern to be converted into a heat storage has proved the project economical and promising. From the rock mechanical, technical and environmental point of view, on the basis of the experience got from the Swedish storages as well, construction of underground heat storages in Finland seems possible and argumented.}
place = {Finland}
year = {1992}
month = {Dec}
}