geothermal energy

Thèmes abordés

Ingénieur, énergie renouvelable, anglais, sciences, énergie, géothermie, production électrique, chaleur, centrale

Résumé du document

Présentation orale de la géothermie.

Ce document en anglais résume la physique utilisée pour produire de la chaleur ou de l'électricité à partir de la chaleur récupérée dans la croute terrestre.

Il se pose aussi la question de son application au uk.

Extraits

[...] How can we heat or cool our home ? Different loops for differents uses Scheme of a heat pump working to heat home We have to determine if the ground is a cool or a hot source relatively to the expected temperature. Real heat pump Enthalpy cycle of the calorific fluide Hydraulic circuit of a real heat pump (heating process) Assuming 10°C for the ground and 20°C inside the home. COPmax = 29.3 It means that we need 1 kW/h of electricity to produce 29.3 kW/h of heat. [...]

[...] Decay of radioactive isotopes Primordial energy of planetary accretion. Heat production Two main uses: Electricity production Horizontal loops ( 0.6 m to 1.2 m depth) Vertical loop (up to 200m) Vertical Wells (very high temperature: more than 4 km) Where in UK ? Temperatures at 5 km below ground level Temperatues at 1 km below ground level Four main sedimentary basins Different way to catch the energy Depth: 0.6 - 1.2 m Temperature depends of the weather Same principle than air to air system. [...]