Abstract
The evaporative cooling effect of the lightweight planting soil module on the building roof could reduce the heat to the top building rooms and improve indoor thermal comfort. Until now, the researches, domestic and overseas, have concentrated on the thermal insulation properties of the actual buildings. However, the investigations on the evaporative cooling characteristics under different controlled environments have not been found yet. In this paper, experiments will be conducted on the evaporative cooling effect of the roof module with planting soil under different moisture contents and environmental controls by using the guarded hot box testing method. From the experimental results, the relationship between the evaporation capacity and moisture content could be obtained, and the influence of the environmental parameters, e.g., relative humidity and ambient temperature, to the evaporation capacity will be analyzed. Based on the variation patterns of the accumulative evaporation capacity with time, a theoretical model for the evaporative cooling effect of the roof module under uneven water supply conditions will be proposed, which will provide basic data for the practical engineering projects and thermal insulation analysis.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Wang Z (2003) Influencing factor analysis of the soil moisture evaporation. J Shanxi Water Conservancy 26(2):26–28
Wang K (2010) Water flow and solute migration in unsaturated soil. Beijing Science Press, Beijing
Van Genucheten MT (1980) A closed form equation predicting the hydraulic conductivity of unsaturated soil. Soil Sci Soc Am J 44:892–898
Liang C, Zhang F, Shi X (2009) Mathematical model for a thin-layer soil water evaporation. Chin Water 9(4):181–183
Shi X, Zhang F, Wang G (2006) Dynamic experimental study of soil water dehydration. J Appl Found Eng Sci 14(3):333–338
Bernard K, Vanclin M, Vidal-Majar D (1981) Possible use of active microwave remote sensing data for prediction regional evaporation by numerical simulation of soil water movement, the unsaturated zone. Water Resour Res 17:1603–1610
Ma J, Sun X, Guo X, Wang Z (2010) Soil water evaporation experimental study under the water storage pit irrigation condition. Mod Agric Water Free Efficient Use Theor Pract 2:266–269
Gardner WR (1959) Solutions of the flow equation for the drying of soil and other porous medial. Soil Sci Soc Am J 23:183–187
Zhao H, Liu X, Wu Q (1992) Soil water evaporation mathematical mode for the leave covering conditions. Soil Water Conserv Bull 19(2):61–64
Xie X, Zuo D (1991) Farmland evaporation. China Meteorological Press, Beijing
Jiang J (1995) Research on the soil water evaporation model. Sichuan Forestry Sci Technol 15(4):20–25
Lu W, Bai K (1987) New method for calculating evaporation value. Hydraul Eng 26(3):12–15
Lei S (1984) Theoretical analysis on one-order soil water evaporation model. J Chengdu Univ Sci Technol 4:135–138
Zhang Y, Cai S, Cai M (1991) Uneven soil water evaporation research under the conditions of low water content of surface soil. J Wuhan Hydraul Power 24(2):157–164
Jin D, Yang S (1981) Method to calculate soil water evaporation capacity based on ordinary meteorological data. People’s Yangtze River 4:47–52
Li H, Cai H, Wang J, Zhao W (2008) Soil water evaporation mathematical model in the reference of water evaporation capacity. J Agric Eng 24(3):1–4
Fan A, Liu W, Wang C (2004) Influence of environmental factors to soil water evaporation. Sol Energy 25(1):1–5
Kang S, Liu X, Gao X (1992) Computational simulation for the soil-crop-atmosphere continuum moisture transmission. J Hydraul Eng 3:1–12
Choudhury B (1983) Modeling the effect of weather condition and soil water potential on canopy temperature for corn. Agric Meteorol 29:169–182
Wang J, Cai H, Liu H (2002) Research on the farmland water evaporation capacity by using Penman-Monteith model and evaporating dish methods. Arid Region Agric Res 20(4):67–71
Acknowledgments
This work was financially supported by the China Postdoctoral Science Foundation (2012M521576), Doctoral Foundation, Guangdong University of Technology (12ZK0380), Guangdong Provincial Science and Technology Program for International Cooperation Projects (2011B050400032), Science and Technology Planning Project for The Ministry of Housing and Urban–Rural Development (2011-k1-28), Guangzhou Science and Technology Project (2010KP046), Science and Technology Planning Project for Panyu District, Guangzhou City (2011-Z-01-37), State Key Laboratory of Subtropical Building Science, South China University of Technology (2011KB22), and Building Energy-Saving and Application Technology key Laboratory, Guangdong Province (2011048).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Wang, Z., Yang, W., Lv, J., Zhao, X. (2014). Theoretical and Experimental Investigations on the Evaporative Cooling Characteristics of the Lightweight Planting Soil Module. In: Li, A., Zhu, Y., Li, Y. (eds) Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning. Lecture Notes in Electrical Engineering, vol 261. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39584-0_18
Download citation
DOI: https://doi.org/10.1007/978-3-642-39584-0_18
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-39583-3
Online ISBN: 978-3-642-39584-0
eBook Packages: EngineeringEngineering (R0)