A Simulation and Monitoring Based Case Study Regarding the Dynamic Thermal Conditions in Non-Used Attic Space

Radoslav Ponechal; Renáta Korenková; Daniela Štaffenová

doi:10.4028/www.scientific.net/AMM.887.467

Paper Titles

Principal Solutions for Sustainable Adaptive Facades Providing Suitable Indoor Environment for Inhabitants
p.435

Analysis of Night-Time Pre-Cooling in a School Building
p.443

Investigating Night Flushing Potential in a Multi-Storey, Open-Plan Office in Germany Using TRNLizard with TRNSYS 18
p.451

Design of Fire Ventilation System for an Underground Car Park by CFD Simulations
p.459

A Simulation and Monitoring Based Case Study Regarding the Dynamic Thermal Conditions in Non-Used Attic Space
p.467

Evaluation of Indoor Climate in Big Lecture Hall
p.475

Thermal Performance of School Buildings: A Case Study from Albania
p.484

Comparison of Measured and Calculated Air Changes due to Single Sided Window Openings - A Case Study
p.492

Analysis of Thermal Comfort and Air Quality in the Kindergarten Hart - A Case Study of a Unique Sustainable Building Design
p.500

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 887A Simulation and Monitoring Based Case Study...

A Simulation and Monitoring Based Case Study Regarding the Dynamic Thermal Conditions in Non-Used Attic Space

Abstract:

This study solves a problem of the dynamic thermal performance of the residential attic space in moderate climatic zone. Heat loss into the attic space is difficult to be accurately determined by the quasi-stationary method. It depends on the thermal resistance of the ceiling, thermal resistance of the roof, ventilation characteristics and other details, such as the solar absorption of the roofing material or roof orientation. The paper presents results of some parametric simulative calculations, which were calibrated with measurements of air temperature in the attic space during the summer, winter and transitional season. It compares the mean air temperature in the ventilated and non-ventilated attics. The difference between the use of bright and dark color of the roof cover is also compared. An alternative with half thickness of thermal insulation was also simulated. Based on measurements and then the simulation the adjustment factor adjustment factor for heat transfer coefficient was quantified..

You might also be interested in these eBooks

12th Envibuild – Buildings and Environment – From Research to Application

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 887)

Pages:

467-474

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.887.467

Citation:

Cite this paper

Online since:

January 2019

Authors:

Radoslav Ponechal*, Renáta Korenková, Daniela Štaffenová

Keywords:

Energy, Loft Space, Roof, Simulation, Temperature

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] P. M. Haese, M. D. Teubner, Heat exchange in an attic space, Internat. J. Heat Mass Transfer 45 (2002) s. 4925–4936.

DOI: 10.1016/s0017-9310(02)00208-9

Google Scholar

[2] K. E. Wilkes, Modeling of residential attics, available at: http://web.ornl.gov/sci/buildings/conf-archive/1979%20B1%20papers/032.pdf.

Google Scholar

[3] Wang, Shimin; Shen, Zhigang; and Gu, Linxia, Numerical simulation of buoyancy-driven turbulent ventilation in attic space under winter conditions. In Energy and Buildings 47, (2012), pp.360-368.

DOI: 10.1016/j.enbuild.2011.12.012

Google Scholar

[4] Buday, P., Jakes, E., Optimization of design of pitched roofs according to phase shift of thermal oscillation, (2014) AMR, 1057, pp.37-44.

DOI: 10.4028/www.scientific.net/amr.1057.37

Google Scholar

[5] D. S. Parker, P. W. Fairey and L. Gu, A Stratified Air Model for Simulation of Attic Thermal Permormance, Insulation Materials: Testing and Applications. 2nd Volume, STM STP 1116, R. S. Graves and D. C. Wzsocki, Eds., American Society for Testing and Materials, Philadelphia (1991).

DOI: 10.1520/stp16339s

Google Scholar

[6] N.Areemit, Y.Sakamoto, Numerical and experimental analysis of a passive room-dehumidifying system using the sorption property of a wooden attic space. In Energy and Buildings 39 (3), (2007), pp.317-327.

DOI: 10.1016/j.enbuild.2006.07.007

Google Scholar

[7] S. Wang, Z. Shen, Impacts of Ventilation Ratio and Vent Balance on Cooling Load and Air Flow of Naturally Ventilated Attics, Energies, 5 (2012), pp.3218-3232.

DOI: 10.3390/en5093218

Google Scholar

[8] A. Fallahi, H. Durschlag, D. Elliott, J. Hartsough, N. Shukla and J. Kosny, Internal Roof and Attic Thermal Radiation Control Retrofit Strategies for Cooling-Dominated Climates, Fraunhofer Center for Sustainable Energz Szstems, (2013).

DOI: 10.2172/1260915

Google Scholar

[9] R. Korenkova, P. Krusinsky and P. Pisca, Analysis of the impact of microclimate in a roof space on a gothic truss construction, Communications: scientific letters of the University of Zilina. Vol. 15, no. 4 (2013), s. 27-31.

DOI: 10.26552/com.c.2013.4.27-31

Google Scholar

[10] Yu, Jinghua & Tian, Liwei & Yang, Changzhi & Xu, Xinhua & Wang, Jinbo, Optimum insulation thickness of residential roof with respect to solar-air degree-hours in hot summer and cold winter zone of china. Energy & Buildings. 43 (9), (2011), s. 2304-2310.

DOI: 10.1016/j.enbuild.2011.05.012

Google Scholar

[11] EN ISO 13790:2008 Energy performance of buildings -- Calculation of energy use for space heating and cooling.

Google Scholar

[12] EN ISO 13789:2007 Thermal performance of buildings -- Transmission and ventilation heat transfer coefficients -- Calculation method.

DOI: 10.3403/30313356

Google Scholar

[13] P.G. Clem, M. Rodriguez, J.A. Voigt and C.S. Ashley, U.S. Patent 6,231,666. (2001).

Google Scholar