Abstract
Abstract Resources of geothermal energy range from the shallow ground to hot water and hot rock were found a few kilometres beneath the Earth’s surface, and down even deeper to the extremely high temperatures of molten rock called magma. The paper shows the analysis of the public building foundation with the usage of shallow geothermal system (closed loop systems using the vertical energy piles). In the soil and groundwater conditions the change of the way of public building foundation was suggested from direct (setting of pads, strip footings and foundation plate according to the basic project) into indirect one with the use of drilled piles in a casing pipe with the possibility of their cooperation with vertical ground collector. Calculations have been conducted in accordance with effectual standards. Both the quantity of energy piles in a single foundation pile coped with the foundation plate and the quantity of energy foundations in the whole building have been determined for the analysed building. Moreover, approximate heating power of the whole system has been calculated. An economical analysis of the proposed solution is presented in a summary.
Highlights
The issue of energetic safety and the necessity to reduce greenhouse gas emission has become a priority of economic policy in the whole European Union, including Poland
Because of the significant height of the building as well as considerable load applied to a particular internal pile, initially considered a single pile foundation, which consists of the pile cap with 4.0×4.0 m size and 1.0 m in thickness and 9 piles drilled in the casing pipe with extraction of output on the ground with a diameter D = 0.5 m and length l = 15.0 m
The paper concentrates on an appropriate design of pile foundations with heating function for the office building “A4 Business Park” in Katowice, in a new localisation
Summary
The issue of energetic safety and the necessity to reduce greenhouse gas emission has become a priority of economic policy in the whole European Union, including Poland. Despite the fact that lower costs of thermal energy, received from a renewable energy sources system has not been shown yet, the conclusions are promising [26] Another example are four conceptions of heat and cool sources solutions for the Environmental Engineering Faculty hall of The Lublin University of Technology: conception I – heat pump + ground collectors 17 units, 100 m each + solar collector + underground storage container; conception II – heat pump + ground collectors 26 units, 96 m each + solar collector + low-loss header, conception III – absorption heat pump + ground collectors 4 units, 90 m each + solar collector + gas boiler, conception IV – gas boilers + chillers + solar collectors. The costs for the change of the project and its execution will be paid for itself in the form of charge decline in the subsequent use of the building (charge for electric and thermal energy)
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