THE CONSTRUCTION OF „BOREHOLE THERMAL ENERGY STORAGE“ IN MIOCENE ROCKS ON LOCALITY OF GREEN GAS DPB, A.S. IN PASKOV (CZECH REPUBLIC)

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-15-5 / ISSN 1314-2704, June 19-25, 2014, Book 4, Vol. 1, 513-518 pp

ABSTRACT
Real Borehole Thermal Energy Storage (BTES) was built under the support of grant project “Using Geothermal Energy for Renewable Energy Sources Systems Including Verification of Energy Accumulation” founded by Technology Agency of Czech Republic. New research BTES polygon in Paskov (Czech Republic) consist of 16 energy boreholes (each 60 m deep), 5 monitoring boreholes (each 15 m deep) and 1 central monitoring borehole (80 m deep). BTES is heated with hot water from CHP unit at temperatures up to 95°C. Rock temperature is measured by sensors in monitoring boreholes situated at different depth levels. The temperature of the fluid in the boreholes is measured by contact sensors which are all ways placed before the first borehole in the series between boreholes in the series and after the output from second borehole. This article will describe experiences from construction and research of storage and explore of heat in the BTES.

Keywords: heat exchanger, borehole, monitoring, miocene rocks