LABORATORY INVESTIGATION OF PERIODIC TEMPERATURE FIELDS AND HEAT AND MASS TRANSFER IN ROCKS

9th International Multidisciplinary Scientific GeoConference - SGEM2009, www.sgem.org, SGEM2009 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 14-19, 2009, Vol. 1, 681-684 pp

ABSTRACT

Periodic thermal processes and periodic temperature fields are of widespread
occurrence in nature and technology. In nature they are at a large conditioned by
periodic processes, such as the Earth’s one year period orbital motion, its diurnal
rotation, etc. In conductive heat transfer mechanism daily variations in temperature
almost decay in a layer about 1 meter thick and annual variations do it in a 18-21meters
thick layer. In the case that periodic Sun heating coincides with fluid mass transfer
(when water percolates from the surface into the subsoil) the thickness of the layer
having periodical temperature fluctuations considerably increases. This invention with
patent priority was made on August, 19, 1964 by N. Frolov (1).