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Transient Thermal Stress Analyses of Concrete Columns as a Sensible Thermal Energy Storage Medium and a Heater

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Abstract (2. Language): 
This paper investigated the thermal stress distribution of a concrete column used as a sensible thermal energy storage medium and a heater. An analytical solution of transient thermal stress distribution in the hollow cylinder concrete columns exposed to heat charging and discharging processes in a period of 24 hours was presented. Transient thermal calculations were carried out for three types of concrete with compressive strength of 18 MPa, 30 MPa and 60 MPa. The results are very attractive in terms of the building heating systems of the future. The investigated concrete columns exposed to extra thermal stress (compressive) values of maximum 7, 10 and 14 MPa for the temperature ranges providing enough heating of the sample flat and thermal comfort.
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