Heat stored in a solid block as source of heating energy
Author(s): Tibor Horváth, Zoltán Pásztory
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.4.2.119-124
Abstract: In present work, the possibility was explored to use a solid block for space heating. The block was placed in a test house with low energy characteristics. Computations revealed that heating period greatly depended on the rate of heat withdrawal. With a rate of 122 W, the required indoor temperature (20ºC) could be maintained for a heating period of 150 days. Larger part of stored energy used for space heating by heat seepage through the block insulation (~48%) and by withdrawing the heat (~38%). Loss to the ground amounted to ~14% of the total energy content of block (~3.5 GJ). This experiment substantiated the viability of space heating by a thermal energy storage system. The heating block had the ability to provide 8.28 kWh/(m2⋅yr) which is a realistic scenario with regards to the heating demands of passive houses. Finite element method proved to be very useful for simulation scenarios.
Keywords: Heat loss, insulation, low energy house, space heating, thermal energy storage
Full Paper.pdf
Innovation Center, University of West Hungary, Sopron, 9400, Hungary
International Journal of Smart Grid and Clean Energy, vol. 4, no. 2, April 2015: pp. 119-124ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.4.2.119-124
Abstract: In present work, the possibility was explored to use a solid block for space heating. The block was placed in a test house with low energy characteristics. Computations revealed that heating period greatly depended on the rate of heat withdrawal. With a rate of 122 W, the required indoor temperature (20ºC) could be maintained for a heating period of 150 days. Larger part of stored energy used for space heating by heat seepage through the block insulation (~48%) and by withdrawing the heat (~38%). Loss to the ground amounted to ~14% of the total energy content of block (~3.5 GJ). This experiment substantiated the viability of space heating by a thermal energy storage system. The heating block had the ability to provide 8.28 kWh/(m2⋅yr) which is a realistic scenario with regards to the heating demands of passive houses. Finite element method proved to be very useful for simulation scenarios.
Keywords: Heat loss, insulation, low energy house, space heating, thermal energy storage
Full Paper.pdf