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DOI: 10.1615/ICHMT.2000.TherSieProcVol2.290
97 pages

Czeslaw Oleskowicz Popiel
Poznan University of Technology, Institute of Environmental Engineering, 60965 Poznan, Piotrowo 3A, Poland

B. Biernacka
Bialystok University of Technology, Institute of Environmental Engineering, Bialystok, ul. Wiejska 45a, Poland


Temperature distributions in soil are important, for example, for calculations of heat losses of buildings to the ground, for design of thermal energy storage equipment and ground heat exchangers, and as well as for analysis of biodegradation processes of organic substances and processes of nitrification.
In this communication the temperature distributions measured in ground during summer and winter are presented. The investigation has been done in Poznan for two differently soil surface covered locations (car park and lawn). Temperatures were measured with thermocouples distributed in soil at the depth from 0 to 7 m (car park) and from 0 to 4.4 m (lawn). It was found that the short period temperature variations reached the depth of approx. 1 m. From July to the end of September from the surface region at ground depth (below about 1.5 m) the heat flux of density q=3.6 W/m2 was transferred. The measurements show also that during summer period the temperature of ground under the bare surface (car park) below 1 m was about 4 degrees higher in comparison with the temperature of ground covered with short grass (lawn). However in winter the temperature distributions were almost the same.

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