Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JANUARY 2017 , Volume 16 , Number 10 #F0070; Page(s) 85 To 93.
 
Paper: 

ANALYTICAL STUDY OF DIRECT COOLING SYSTEM USING UNDERGROUND ENERGY STORAGE TANK IN CLIMATIC CONDITION OF TABRIZ CITY

 
 
Author(s):  MINAEI ASGAR, MAEREFAT MEHDI*
 
* DEPARTMENT OF MECHANICAL ENGINEERING, TARBIAT MODARES UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

in this paper, use of the spherical ground storage tank as a heat sink for cooling of the residential and office buildings in the climatic condition of Tabriz city is studied. For computing the heat transferred between the underground storage tank and the soil around it a new analytical solution is presented.
Inside the storage tank, the analogy between thermal and electrical conduction is used for deriving heat balance equations. In ground around the storage tank, the transient conduction heat transfer equation in spherical coordinates is considered. The Sample building envelope is simulated in Energy Plus and the storage tank and fan coil are simulated in Matlab software. Finally the building and the underground storage tank is linked together and the performance of the direct cooling system is investigated. Results show that the dimension of the storage tank has significant effect on the comfort condition of the building. The optimum diameter is 3.5m and 3.0m for residential and office building. By decreasing the storage tank optimum diameter the discomfort hours increase significantly. Using storage tank with larger diameters than optimum diameter the discomfort hours increase very slightly. Also, results show that the optimum diameter for office building is lower than the residential building.

 
Keyword(s): UNDERGROUND ENERGY STORAGE TANK, ANALYTICAL SOLUTION, OPTIMUM DIAMETER, TABRIZ CITY
 
References: 
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