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Experimental evaluation of analytical models of ground heat storage

Nowak W., Zwarycz-Makles K.

Archives of Thermodynamics

2006

Vol. 27, no. 4

169-178

In the paper has been presented evaluation of analytical models of ground heat storage on the basis of measurements results obtained on the experimental rig for such a heat accumulator. Suggested have been three analytical models of non-stationary temperature field of a repeatable unit volume of accumulator soil. The results obtained on the basis of these models have been compared against the results of experimental investigations. The experimental investigations have been conducted for the case of simulating supplying of accumulator with water heated in solar collectors with temperatures of 47.5[degrees]C and 78.5[degrees]C, delivered to the ground heat exchanger.