Underground storage of heat
Creators
- 1. CEA Direction des Productions, 92 - Chatillon (France)
- 2. Entreprise de Recherches et d'Activites Petrolieres (ERAP), 75 - Paris (France)
Description
The interest laying in heat storage is envisaged taking account of the new energy context, with a view to optimizing the use of production means of heat sources hardly modulated according to the demand. In such a way, a natural medium, without any constructions cost but only an access cost is to be used. So, porous and permeable rocky strata allowing the use of a pressurized water flow as a transfer fluid are well convenient. With such a choice high temperatures (200 deg C) may be obtained, that are suitable for long transmissions. A mathematical model intended for solving the conservation equations in the case of heat storage inside a confined water layer is discussed. An approach of the operating conditions of storage may involve either a line-up arrangement (with the hot drilling at the center, the cold drillings being aligned on both sides) or a radial arrangement (with cold drillings at the peripheral edge encircling the hot drilling at the center of the layer). The three principal problems encountered are: starting drilling, and the circuit insulation and control
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
On envisage l'interet du stockage de la chaleur dans le nouveau contexte energetique dans le cadre d'une recherche de l'utilisation maximale des moyens de production ou d'une utilisation de sources de chaleur difficilement modulables suivant la demande. On est conduit a utiliser un milieu naturel, pour lequel le cout de construction est nul et seul demeure le cout d'acces. C'est ainsi que les couches de roches poreuses et permeables permettant la circulation de l'eau sous pression comme fluide de transfert sont bien adaptees. Le choix de cette solution permet d'atteindre des temperatures assez elevees (200 deg C) favorables pour les transports a grande distance. On discute un modele mathematique de resolution des equations de conservation dans le cas du stockage de chaleur dans une nappe aquifere captive. Un calcul approche des conditions de fonctionnement de ce stockage porte soit sur une disposition en ligne (forages chauds au centre avec une ligne de forages froids de part et d'autre) ou une disposition radiale (forages chauds au centre, avec forages froids places en cercle vers l'exterieur). Les trois principaux problemes concernent la mise en route du stockage, l'isolement des circuits et la regulation de ces circuitsFiles
8303752.pdf
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Additional details
Additional titles
- Original title (French)
- Stockages souterrains de chaleur
Publishing Information
- Imprint Pagination
- 14 p.
- Report number
- CEA-CONF--3638
Conference
- Title
- thermal aspects of actual energy problems.
- Acronym
- Annual meeting of the French Society of Heat Engineers
- Dates
- 24 May 1976.
- Place
- Grenoble, France.
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 8303752
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S29: ENERGY PLANNING, POLICY AND ECONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- DISTRICT HEATING; ENERGY STORAGE; GROUND WATER; HEAT TRANSFER; MATHEMATICAL MODELS; POROSITY; POWER DEMAND; WATER RESERVOIRS
- Descriptors DEC
- ENERGY TRANSFER; HEATING; HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS; STORAGE; SURFACE WATERS; WATER