A Procedure for Computing Conduction Time Series Factors for Walls and Roofs with Large Thermal Capacity by Finite Difference Method

Ki-Hong Byun

doi:10.7836/kses.2018.38.5.027

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2018 Vol.38, Issue 5 Preview Page Next Page

Research Article

A Procedure for Computing Conduction Time Series Factors for Walls and Roofs with Large Thermal Capacity by Finite Difference Method 열용량이 큰 벽체나 지붕재의 전도시계열 계수를 유한차분법으로 구하는 과정

30 October 2018. pp. 27-36

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Abstract

The purpose of this paper is to apply the numerical solution procedure to compute conduction time series factors (CTSF) for construction materials with large thermal capacities. After modifying the procedure in Ref. [9], it is applied to find the CTSF for the wall type 19 and the roof type 18 of ASHRAE. The response periods for one hr pulse load are longer than 24hrs for these wall and roof. The CTSF generated using modified procedure agree well with the values presented in the ASHRAE handbook. The modified procedure is a general procedure that can be applied to find CTSF for materials with complex structures. For the large thermal capacity materials, it should be checked whether thermal response period of the material is over 24hr or not. With suggested solution procedure, it is easy to check the validity of the CTSF based on 24hr period.

Keywords

Conduction Time Series Factors

Radiant Time Series

Cooling load

Wall and Roof

Thermal Capacity

Response Period

Finite Difference Method

키워드

전도시계열 계수

복사시계열

냉방부하

벽과 지붕

열용량

반응주기

유한 차분법

References

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Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 38
No :5
Pages :27-36
Received Date : 2018-07-02
Revised Date : 2018-09-07
Accepted Date : 2018-10-30
DOI :https://doi.org/10.7836/kses.2018.38.5.027

Journal of the Korean Solar Energy SocietyISSN:1598-6411(Print) 2508-3562(Online)한국태양에너지학회

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