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http://dx.doi.org/10.17664/ksgee.2017.13.2.016

A Case Study on Effectiveness Assessment of Supply Air System Using Pit in Building  

Min, Joon-Ki (Dept. of Architecture Engineering, Kyung Hee University)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.13, no.2, 2017 , pp. 16-21 More about this Journal
Abstract
In this study, the flow effect of warming and cooling in the air supply of a pit for air conditioning were evaluated in BS art museum. We simulated the flow temperature for a pit winter and summer seasons using computational fluid dynamics. Consequential, energy saving, energy saving costs and initial payback periods were calculated and the following conclusions were drawn. The warming effect of the winter increased by $18.1^{\circ}C$ and $0.2^{\circ}C/m$ and the cooling effect of the summer decreased by $6.1^{\circ}C$ and dropped to $0.07^{\circ}C/m$. Energy saving appeared to be 19.1 kW in the summer and 54.3 kW in winter. Energy saving costs ranged from 2,567,119 won/year to 5,134,238 won/year and at minimum, initial payback period for initial investment was 3.9 years. As a result, the air supply system using an existing pit without any burden on initial investment costs is believed to contribute to energy saving through warming and cooling of unutilized energy effects.
Keywords
Pit; Computational Fluid Dynamics; Effectiveness Assessment; Energy Saving; Payback Period;
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