Impact of Basic Parameters on Heat and Moisture Process Simulation of Bamboo Building Envelope in China (II): Material Parameters

Abstract:

Bamboo building envelope (BBE) is a kind of hygroscopic construction, making it necessary to describe the coupled heat and moisture (H&M) process accurately. In order to clarify the impact of material parameters on the H&M process of BBE, the study sets up BBE comparison model groups in WUFI Plus for annual coupled H&M process simulation, with exterior walls of 3 typical bamboos as boundary conditions and climate data of 24 Chinese representative cities as external conditions. Results quantitatively show the factor impact of hygrothermal properties parameters on the annual moisture content, heat and moisture exchange of the bamboo exterior walls, as well as the HVAC demand and indoor hygrothermal environment of the bamboo enclosed space. The simulation without liquid water-related parameters results in significant underestimation of moisture content and moisture exchange, and causes evident deviation to the heat exchange and HVAC demand. The constant valuation of thermal parameters and hygric parameters lead to deviation in heat process and moisture process of the BBE, respectively. The study highlights the moisture content-dependent bamboo hygrothermal parameters for the application of BBE.

• Periodical: Materials Science Forum (Volume 1053)
• Pages: 367-376
• DOI: https://doi.org/10.4028/p-661xq9
• Online since: February 2022
• Authors: Zu Jian Huang*, Yi Min Sun
• Keywords: Bamboo Building Envelope, Heat Exchange, Heat Process, HVAC Demand, Indoor Hygrothermal Environment, Material Parameter, Moisture Content, Moisture Exchange, Moisture Process

References

[1] Z. Huang: Application of Bamboo in Building Envelope (Springer, 2019).

[2] A.I.O.T. Construction: Timber Construction Manual, Sixth Edition (Wiley, 2012).

[3] S.C. Wu, S.Y. Yu, J. Han, et al.: Journal of central south forestry university, Vol. 24(5) (2004), p.70–75.

[4] D.U. Shah, M.C.D. Bock, H. Mulligan, et al.: Journal of Materials Science, Vol. 51(6) (2016), p.2991–3002.

[5] Z.H. Jiang, H.K. Wang, Y. Yu, et al.: Journal of Nanjing Forestry University, Vol. 36(2) (2012), p.11–14.

[6] P. Huang, E. Latif, W.S. Chang, et al.: Construction and Building Materials, Vol. 141(15) (2017), p.216–221.

[7] A. Kumar , T. Vlach, L. Laiblova, et al.: Construction and Building Materials, Vol. 127 (2016), p.815–827.

[8] A. Azadeh and K. Ghavami: Construction and Building Materials, Vol. 186 (2018), p.145–154.

[9] T. Defraeye, B. Blocken and J. Carmeliet: Chemical Engineering Research & Design, Vol. 91(1) (2013), p.36–42.

[10] M. Islahuddin and H. Janssen: Energy Procedia, Vol. 132 (2017), p.273–278.

[11] W. Van De Walle and H. Janssen, in: Proceedings of the CESBP Central European Symposium on Building Physics and Bausim (2016), p.67–74.

[12] A. Deconinck and S. Roels: Energy and Buildings, Vol. 130 (2016), p.309–320.

[13] Z. Huang, Y. Sun and F. Musso: Construction and Building Materials, Vol. 155 (2017), p.1112–1125.