Application of different technologies to use deep drill holes for geothermal heat supply in the Russian Federation
- Key words
- Geothermal circulation systems, heat pumps
- Location
- Gorushka, Russia
- Conference
- International Geothermal Workshop, Russia
- Year
- 2003
- Session
- Local geothermal heat supply systems (direct ones and throug
- Language
- English
- Paper number
- W00033
Full text
382KB, opens in a new tab
Abstract
Two modern technologies for development of geothermal resources are compared: hydrothermal resources ñ by using a doublet consisting of production and injection wells the so-called geothermal circulation system (GCS); petrothermal resources ñ a single ñ drillhole design by using a deep borehole heat exchanger.
Based on an example of the Yaroslavl Region it is shown that at a moderate geothermal rock gradient typical for the central parts of Russia GCS technolies with 2.2 km deep holes can provide thermal power totalled from 4-6 to scores of megawatts. FGUP NPTs "Nedra" has worked out feasibility reports with participation of German specialists: for a block of houses with 8000 dwellers, for a rural settlement and others.
Application of a single ñ drillhole technology reduces thermal power to 0.3-0.7 MW from one hole (including thermal transformation and peak heating). At low costs for restoration of old hole a deep heat exchanger technology is effective and economically profitable for some facilities in the central regions of Russia and under favourable geothermal conditions (geothermal gradient 5oC and higher at a depth of 100 m) it becomes profitable to drill two new 1.9 km deep holes near the consumer with a total power capacity up to 3MW as it is true for the regions of the Northern Caucasus.
Application of different technologies facilitates distribution of resource-saving and ecologically safe projects for heat supply in Russia and under involement of internation institutions into a practical realization of projects with high capital investments it will contribute to solution of a strategic task on development of geothermal power generation in the Central and East Europe.
Abstract file
Copyright 2003, Association of Geothermal Energy Soc. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.