1. Investigation of thermal efficiency of concrete by heat sink method.
- Author
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Joarder, Jubaer Hasan, Raihan, Mostazabul, and Rahman, Ataur
- Subjects
THERMAL efficiency ,THERMAL insulation ,HEAT sinks ,CONCRETE ,SPECIFIC heat ,CONSTRUCTION materials ,THERMAL conductivity - Abstract
Heat sink is an efficient mechanical procedure in which embodied heat is channeled out from a hot substance to a fluid medium. Till now, this application is mostly used in electrical and mechanical devices ranging from microprocessors to automobiles. Concrete, being an inert building material, can inherently store substantial heat energy because of its low thermal conductivity and high specific heat, which is why concrete shows quite good performance in thermal insulation and is reasonably high in fire resistance. During a fire incident, ambient temperature goes up and as a consequence, concrete keeps heated up inside its body and dissipate accumulated heat very slowly into the surroundings. A good number of experimental studies have previously been done on improvise fire resistance and enhancing the insulation property when exposed to fire by using high-strength concrete. In this experimental study, heat sink procedure is implemented in concrete to improve the heat transfer behavior of concrete when exposed to fire. Only plain concrete specimens are analyzed at an elevated temperature. The temperature of concrete specimens is recorded by a data logger. Temperature differences and heat transfer rate of normal concrete specimen and concrete specimen with embedded heat sink are then compared. It is observed that heat sink can dissipate embodied heat in concrete with substantial efficiency. The rate of heat transfer increases with the increase of flow of water within the heat sink. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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