An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements

ARGUNHAN, Zeki; Oktay, Hasan; Yumrutas, Recep

doi:10.35378/gujs.615322

An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements

Hasan OKTAY, (Batman Üniversitesi, Mühendislik ve Mimarlık Fakültesi, Batman, Türkiye)

Recep YUMRURAŞ, (Gaziantep Üniversitesi, Mühendislik Fakültesi, Gaziantep, Türkiye)

Zeki ARGUNHAN (Bitlis Eren Üniversitesi, Mühendislik ve Mimarlık Fakültesi, Bitlis, Türkiye)

Gazi University Journal of Science

3 2

Yıl: 2020 Cilt: 33 Sayı: 2 Sayfa Aralığı: 492 - 508 Metin Dili: İngilizce DOI: 10.35378/gujs.615322 İndeks Tarihi: 04-11-2020

An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements

Öz:

The time lag (TL) and decrement factor (DF) are essential for the heat storage capabilities ofbuilding elements, which strictly depend on the thermophysical properties of the elements.Many investigations are presented in literature arguing to find the influence of eachthermophysical property on TL and DF by keeping the other properties constant. This studyaims to investigate the effect of each property on TL and DF, utilizing relationships betweenthe measurement values of the thermophysical properties of wall materials. Therefore, first,132 new concrete wall samples were produced, and their thermophysical properties weretested. Secondly, TL and DF values for each building element are computed from the solutionof the problem by Complex Finite Fourier Transform (CFFT) technique. Finally, amultivariate regression analysis has been performed, and the variations of eachthermophysical property versus TL and DF are presented, and also the findings are comparedwith literature. The results show that each property alone (keeping the other propertiesconstant) is not adequate to identify the thermal inertia and thermal performance of a wallelement. Besides, 87.3 % decrease in thermal diffusivity corresponds to 6.03 h increase in thevalue of TL and 88.8 % decrease in value of DF; respectively, for W1 wall assembly

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

[1] Moosavi, L., Mahyuddin, N., Ghafar, N.A., Ismail, M.A., “Thermal performance of atria: An overview of natural ventilation effective designs”, Renewable & Sustainable Energy Reviews, 34: 654–670, (2014).
[2] Sun, C., Shu, S., Ding, G., Zhang, X., Hu, X., “Investigation of time lags and decrement factors for different building outside temperatures”, Energy and Buildings, 61: 1–7, (2013).
[3] Mazzeo, D., Oliveti, G., Arcuri, N., “Influence of internal and external boundary conditions on the decrement factor and time lag heat flux of building walls in steady periodic regime”, Applied Energy, 164: 509–531, (2016).
[4] Gasparella, A., Pernigotto, G., Baratieri, M., Baggio, P., “Thermal dynamic transfer properties of the opaque envelope: Analytical and numerical tools for the assessment of the response to summer outdoor conditions”, Energy and Buildings, 43: 2509–2517, (2011).
[5] Ruivo, C. R., Ferreira, P. M., Vaz, D. C., “On the error of calculation of heat gains through walls by methods using constant decrement factor and time lag values”, Energy and Buildings, 60: 252– 261, (2013).
[6] Mavromatidis, L. E., Mankibi, M. E., Michel, P., Santamouris, M., “Numerical estimation of time lags and decrement factors for wall complexes including Multilayer Thermal Insulation, in two different climatic zones”, Applied Energy, 92: 480–491, (2012).
[7] Vijayalakshmi, M. M., Natarajan, E., Shanmugasundaram, V., “Thermal behaviour of building wall elements”, Journal of Applied Sciences, 15: 3128–3133, (2006).[8] Kaşka, Ö., Yumrutaş, R., Arpa, O., “Theoretical and experimental investigation of total equivalent temperature difference (TETD) values for building walls and flat roofs in Turkey”, Applied Energy, 86: 737–747, (2009).
[9] Stephan, E., Cantin, R., Caucheteux, A., Tasca-Guernouti, S., Michel, P., “Experimental assessment of thermal inertia in insulated and non-insulated old limestone buildings”, Building and Environment, 80: 241–248, (2014).
[10] Ulgen, K., “Experimental and theoretical investigation of effects of wall's thermophysical properties on time lag and decrement factor”, Energy and Buildings, 34: 273–278, (2002).
[11] Asan, H.,” Investigation of wall’s optimum insulation position from maximum time lag and minimum decrement factor point of view”, Energy and Buildings, 32: 197–203, (2000).
[12] Asan, H., “Effects of Wall's insulation thickness and position on time lag and decrement factor”, Energy and Buildings, 28: 299-305, (1998).
[13] Ozel, M., “Effect of insulation location on dynamic heat-transfer characteristics of building external walls and optimization of insulation thickness”, Energy and Buildings, 72: 288–295, (2014).
[14] Asan, H., “Numerical computation of time lags and decrement factors for different building materials”, Building and Environment, 41: 615–620, (2006).
[15] Asan, H., Y.S. Sancaktar,” Effects of Wall’s thermophysical properties on time lag and decrement factor”, Energy Build, 28: 159–166, (1998).
[16] Zhang, Y., Lin, K., Zhang, Q., Di, H., “Ideal thermophysical properties for free-cooling (or heating) buildings with constant thermal physical property material”, Energy and Buildings, 38: 1164–1170, (2006).
[17] Kontoleon, K.J., Theodosiou, Th.G., Tsikaloudaki, K.G., “The influence of concrete density and conductivity on walls’ thermal inertia parameters under a variety of masonry and insulation placements”, Applied Energy, 112: 325–337, (2013).
[18] Yunsheng, X., Chung, D.D.L., “Effect of sand addition on the specific heat and thermal conductivity of cement”, Cement and Concrete Research, 30: 59–61, (2000).
[19] Khan, M.I., “ Factors affecting the thermal properties of concrete and applicability of its prediction models”, Building and Environment, 37: 607–614, (2002).
[20] Oktay, H., Yumrutas, R., Akpolat, A., “Mechanical and thermophysical properties of lightweight aggregate concretes”, Constr. Build. Mater., 96: 217–25, (2015).
[21] Unal, O., Uygunoglu, T., Yildiz, A., “Investigation of properties of low-strength lightweight concrete for thermal insulation”, Building and Environment, 42: 584–590, (2007).
[22] H. Canakci, R. Demirboga, B. Karakoc, O. Sirin, Thermal conductivity of limestone from Gaziantep (Turkey), Building and Environment, 42: 1777–1782, (2007).
[23] ACI Committee 122, Guide to Thermal Properties of Concrete and Masonry Systems, American Concrete Institution, ISBN 9780870310850, (2002).[24] Jin, X., Zhang, X., Cao, Y., Wang, G., “Thermal performance evaluation of the wall using heat flux time lag and decrement factor”, Energy and Buildings, 47: 369–374, (2012).
[25] Zhang, Y., Du, K., He, J., Yang, L., Li, Y., Li, S., “Impact factors analysis on the thermal performance of hollow block wall”, Energy and Buildings, 75: 330–341, (2014).
[26] Yumrutas, R., Unsal, M., Kanoglu, M., “Periodic solution of transient heat flow through multilayer walls and flat roofs by complex finite Fourier transform technique”, Building and Environment, 40: 1117–25, (2005).
[27] ASHRAE, ASHRAE handbook-fundamentals, ASHRAE, Atlanta, (1993).
[28] Duffie, J.A., Beckman, W.A., Solar engineering of thermal process, fourth ed., Wiley, New York, (2013).
[29] Mackey, C., Wright, L., “Periodic heat flow-homogeneous walls or roofs, ASHVE Transactions”, 50: 293–312, (1944).
[30] Mackey, C., Wright, L., “Periodic heat flow-composite walls or roofs, ASHVE Transactions”, 52: 283–296, (1946).
[31] Luo, C., Moghtaderi, B., Sugo, H., Page, A., “Time lags and decrement factors under airconditioned and free-floating conditions for multi-layer materials”, 10th Conference of the International Building Performance Simulation Association, Beijing, 95-100, (2007).
[32] Fidan, S., Oktay, H., Polat, S., Ozturk, S., “An Artificial Neural Network Model to Predict the Thermal Properties of Concrete Using Different Neurons and Activation Functions”, Advances in Materials Science and Engineering, vol. (2019). https://doi.org/10.1155/2019/3831813.
[33] TS EN 12667 Turkish Standards Institute, Thermal performance of building materials and products, (2003).
[34] ASM International Materials Properties Database Committee, Thermal Properties of Metals, ISBN 0-87170-768-3, (2002).
[35] Gagliano, A., Patania, F., Nocera, F., Signorello, C., “Assessment of the dynamic thermal performance of massive buildings”, Energy and Buildings, 72: 361–370, (2014).
[36] Barrios, G., Huelsz, G., Rechtman, R., Rojas, J., “Wall/roof thermal performance differences between air-conditioned and non air-conditioned rooms”, Energy and Buildings, 43: 219–223, (2011).
[37] Kossecka, E., “Correlations between structure dependent and dynamic thermal characteristics of building walls”, Journal of Building Physics, 22: 315–333, (1999).

APA	Oktay H, Yumrutas R, ARGUNHAN Z (2020). An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. , 492 - 508. 10.35378/gujs.615322
Chicago	Oktay Hasan,Yumrutas Recep,ARGUNHAN Zeki An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. (2020): 492 - 508. 10.35378/gujs.615322
MLA	Oktay Hasan,Yumrutas Recep,ARGUNHAN Zeki An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. , 2020, ss.492 - 508. 10.35378/gujs.615322
AMA	Oktay H,Yumrutas R,ARGUNHAN Z An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. . 2020; 492 - 508. 10.35378/gujs.615322
Vancouver	Oktay H,Yumrutas R,ARGUNHAN Z An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. . 2020; 492 - 508. 10.35378/gujs.615322
IEEE	Oktay H,Yumrutas R,ARGUNHAN Z "An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements." , ss.492 - 508, 2020. 10.35378/gujs.615322
ISNAD	Oktay, Hasan vd. "An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements". (2020), 492-508. https://doi.org/10.35378/gujs.615322

APA	Oktay H, Yumrutas R, ARGUNHAN Z (2020). An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. Gazi University Journal of Science, 33(2), 492 - 508. 10.35378/gujs.615322
Chicago	Oktay Hasan,Yumrutas Recep,ARGUNHAN Zeki An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. Gazi University Journal of Science 33, no.2 (2020): 492 - 508. 10.35378/gujs.615322
MLA	Oktay Hasan,Yumrutas Recep,ARGUNHAN Zeki An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. Gazi University Journal of Science, vol.33, no.2, 2020, ss.492 - 508. 10.35378/gujs.615322
AMA	Oktay H,Yumrutas R,ARGUNHAN Z An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. Gazi University Journal of Science. 2020; 33(2): 492 - 508. 10.35378/gujs.615322
Vancouver	Oktay H,Yumrutas R,ARGUNHAN Z An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements. Gazi University Journal of Science. 2020; 33(2): 492 - 508. 10.35378/gujs.615322
IEEE	Oktay H,Yumrutas R,ARGUNHAN Z "An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements." Gazi University Journal of Science, 33, ss.492 - 508, 2020. 10.35378/gujs.615322
ISNAD	Oktay, Hasan vd. "An Experimental Investigation of the Effect of Thermophysical Properties on Time Lag and Decrement Factor for Building Elements". Gazi University Journal of Science 33/2 (2020), 492-508. https://doi.org/10.35378/gujs.615322