A thermal energy storage unit consists of a large rectangular channel, which is well insulated on its outer surface and encloses alternating layers of the storage material and the flow passage. Storage material Each layer of the storage material is an aluminum slab which is at an initial temperature of 25 °C. The characteristic length is equal to 0.025 m. Consider conditions for which the storage unit is charged by passing a hot gas through the passages, with the gas temperature and the convection coefficient assumed to have constant values of T 600 °C and h-100 W/m2.K throughout the channel. k-231 W/m. K, c 1033 J/kg. K, p-2702 kg/m a) How long will it take to achieve 75% of the maximum possible energy storage? b) What is the temperature of the aluminum at this time?

A thermal energy storage unit consists of a large rectangular channel, which is well insulated on its outer surface and encloses alternating layers of the storage material and the flow passage. Storage material Each layer of the storage material is an aluminum slab which is at an initial temperature of 25 °C. The characteristic length is equal to 0.025 m. Consider conditions for which the storage unit is charged by passing a hot gas through the passages, with the gas temperature and the convection coefficient assumed to have constant values of T 600 °C and h-100 W/m2.K throughout the channel. k-231 W/m. K, c 1033 J/kg. K, p-2702 kg/m a) How long will it take to achieve 75% of the maximum possible energy storage? b) What is the temperature of the aluminum at this time?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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