Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Evaluation the effect of smart glasses on solar heat gain and cooling loads in office building in hot and humid climate of Bushehr

Authors
jalil shaeri 1
roza vakilinazhad 2
1 Faculty of art and architecture, Shiraz university
2 Faculty of art and architecture, Shiraz university, Shiraz, Iran
Abstract
Today, application of advanced materials has made opportunities to reduce energy consumption of buildings and improve life’s quality. Smart glasses are among new materials designed to prevent energy loss through windows. Smart glasses could be categorized as Electrochromic glasses, liquid crystals, Gasochromics, Thermochromics and SPDs. In this article introducing various types of smart glasses, their characteristics and thermal performance had been compared. In order to evaluate the impact of smart glasses on energy consumption of building, a small office in Bushehr, Iran has been studied using Designbuilder simulation software. The results show advantages of using smart glass in reducing solar heat gain and cooling load of building. According to the results, SPD glass has the best performance reducing cooling load of building. Gasochromic, Electrochromic and Thermochromics glasses would also reduce the cooling load respectively. While the amount of solar heat gain varies in different months of the year, the average annual solar heat gain is the lowest using SPD glasses and Gasochromic, Thermochroic and Electrochromic glasses are in the next step. Application of SPD glass would result in 48.3% reduction in buildings cooling load compare to ordinary glass. The amount of reduction for Gasochromic, Electrochromic and Thermochromics glasses would be 45.8%, 34.1% and 17.23% respectively. So application of smart glasses in hot and humid climate of Bushehr can reduce solar heat gain and thus cooling load of buildings
Keywords
Smart glass
Hot and humid climate
Bushehr
DesignBuilder software
SPD

Subjects

[1]  Pérez-Lombard, L., Ortiz, J., and Pout, C., “A Review on Buildings Energy Consumption Information”, Energy Build., Vol. 40, No. 3, pp. 394–398, (2008).
 
[2]  Glabchi, M., "Nano Technology in Architecture and Building Engineering", Tehran University, (2011).
 
[3]  Addington, D.M., and Schodek, D.L., "Smart Materials and New Technologies: for the Architecture and Design Professions", Routledge, London, England, (2005).
 
[4]  Tavares, P., Bernardo, H., Gaspar, A., and Martins, A., “Control Criteria of Electrochromic Glasses for Energy Savings in Mediterranean Buildings Refurbishment”, Sol. Energy, Vol. 134, pp. 236–250, (2016).
 
 [5] Gugliermetti, F., and Bisegna, F., “Visual and Energy Management of Electrochromic Windows in Mediterranean Climate”, Build. Environ, Vol. 38, pp. 479–492, (2003).
 
[6]  Nilsson, A.M., and Roos, A., “Evaluation of Optical and Thermal Properties of Coatings for Energy Efficient Windows”, Thin Solid Films, Vol. 517, No. 10, pp. 3173–3177, (2009).
 
[7]  Purushothaman, K.K., Antony, S.J., and Muralidharan, G., “Optical, Structural and Electrochromic Properties of Nickel Oxide Films Produced by Sol–gel Technique”, Sol. Energy, Vol. 85, No. 5, pp. 978–984, (2011).
 
[8]  Piccolo, A., Pennisi, A., and Simone, F., “Daylighting Performance of an Electrochromic Window in a Small Scale Test-cell”, Sol. Energy, Vol. 83, No. 6, pp. 832–844, (2009).
 
[9]  Deforest, N., Shehabi, A., Selkowitz, S., and Milliron, D.J., “A Comparative Energy Analysis of Three Electrochromic Glazing Technologies in Commercial and Residential Buildings”, Appl. Energy, Vol. 192, pp. 95–109, (2017).
 
[10] DeForest, N., Shehabi, A., O’Donnell, J., Garcia, G., Greenblatt, J., Lee, E.S., Selkowitz, S., and Milliron, D.J., “United States Energy and CO2 Savings Potential from Deployment of Near-infrared Electrochromic Window Glazings”, Build. Environ., Vol. 89, pp. 107–117, Jul (2015).
 
[11] Zinzi, M., “Office Worker Preferences of Electrochromic Windows: A Pilot Study”, Build. Environ., Vol. 41, pp. 1262–1273, (2006).
 
[12] Piccolo, A., and Simone, F., “Effect of Switchable Glazing on Discomfort Glare from Windows”, Build. Environ., Vol. 44, No. 6, pp. 1171–1180, (2009).
 
[13] Lee, E.S., Pang, X., Hoffmann, S., Goudey, H., and Thanachareonkit, A., “An Empirical Study of a Full-scale Polymer Thermochromic Window and its Implications on Material Science Development Objectives”, Sol. Energy Mater. Sol. Cells, Vol. 116, pp. 14–26, (2013).
 
[14] Hoffmann, S., Lee, E.S., and Clavero, C., “Examination of the Technical Potential of Near-infrared Switching Thermochromic Windows for Commercial Building Applications”, Sol. Energy Mater. Sol. Cells, Vol. 123, pp. 65–80, (2014).
 
[15] Lu, Y., Xiao, X., Zhan, Y., Cao, Z., Cheng, H., and Huan, C., “Functional Transparent Nanocomposite Film with Thermochromic and Hydrophobic Properties Fabricated by Electrospinning and Hot-pressing approach,” Ceram. Int., Vol. 44, No. 1, pp. 1013–1018, (2018).
 
[16] Chang, T., Cao, X., Dedon, L.R., Long, S., Huang, A., Shao, Z., Li, N., Luo, H., and Jin, P., “Optical Design and Stability Study for Ultrahigh-performance and Long-lived Vanadium Dioxide-based Thermochromic Coatings”, Nano Energy, Vol. 44, pp. 256–264, Feb. (2018).
 
[17] Sharma, M., Whaley, M., Chamberlain, J., Oswald, T., Schroden, R., Graham, A., Barger, M., and Richey, B., “Evaluation of Thermochromic Elastomeric Roof Coatings for Low-slope Roofs”, Energy Build., Vol. 155, pp. 459–466, (2017).
 
[18] Costanzo, V., Evola, G., and Marletta, L., “Thermal and Visual Performance of Real and Theoretical Thermochromic Glazing Solutions for Office Buildings”, Sol. Energy Mater. Sol. Cells, Vol. 149, pp. 110–120, (2016).
 
[19] Ghosh, A., Norton, B., and Mallick, T.K., “Daylight Characteristics of a Polymer Dispersed Liquid Crystal Switchable Glazing”, Sol. Energy Mater.Sol. Cells, Vol. 174, pp. 572–576, (2018).
 
[20] Feng, W., Zou, L., Gao, G., Wu, G., Shen, J., and Li, W., “Gasochromic Smart Windows: Optical and Thermal Properties, Energy Simulation and Feasibility Analysis”, Sol. Energy Mater. Sol. Cells, Vol. 144, pp. 316–323, (2016).
 
[21] Wittwer, V., Datz, M., Ell, J., Georg, A., Graf, W., and Walze, G., “Gasochromic Windows”, Sol. Energy Mater. Sol. Cells, Vol. 84, pp. 305–314, (2004).
 
[22] Ghosh, A., Norton, B., and Duffy, A., “Measured Overall Heat Transfer Coefficient of a Suspended Particle Device Switchable Glazing”, Appl. Energy, Vol. 159, pp. 362–369, (2015).
 
[23] Ghosh, A., Norton, B., and Duffy, A., “Behaviour of a SPD Switchable Glazing in an Outdoor Test Cell with Heat Removal under Varying Weather Conditions”, Appl. Energy, Vol. 180, pp. 695–706, (2016).
 
[24] Ghosh, A., Norton, B., and Duffy, A., “Effect of Atmospheric Transmittance on Performance of Adaptive SPD-vacuum Switchable Glazing”, Sol. Energy Mater. Sol. Cells, Vol. 161, pp. 424–431, (2017).
 
[25] Barrios, D., Vergaz, R., Sánchez-pena, J.M., García-cámara, B., Granqvist, C.G., and Niklasson, G.A., “Simulation of the Thickness Dependence of the Optical Properties of Suspended Particle Devices”, Sol. Energy Mater. Sol. Cells, Vol. 143, pp. 613–622, (2015).
 
[26] Barrios, D., Vergaz, R., Sanchez-pena, J.M., Granqvist, C.G., and Niklasson, G.A., “Toward a Quantitative Model for Suspended Particle Devices: Optical Scattering and Absorption Coefficients”, Sol. Energy Mater. Sol. Cells, Vol. 111, pp. 115–122, (2013).
 
[27] Iraqi, H., “Investigation of Properties of Thermochemical Coating of Vanadium Dioxide for Smart Glass”, Journal Word of Color, Vol. 4, (2013).
 
[28] Agnihotry, S.A., Singh, P., Joshi, A.G., Singh, D.P., Sood, K.N., and Shivaprasad, S.M., “Electrodeposited Prussian Blue Films: Annealing Effect”, Electrochim. Acta, Vol. 51, No. 20, pp. 4291–4301, (2006).
 
[29] Avendano, A., Azens, A., Niklasson, G.A., and Granqvist, C.G., “Sputter Deposited Electrochromic Films and Devices Based on These: Progress on Nickel-oxide-based Films”, Mater. Sci. Eng. B, Vol. 138, No. 2, pp. 112–117, (2007).
 
[30]“Smart Glass Windows,” [Online]. Available: http://www.glassapps.com/ products/ smart-glass-windows/. [Accessed: 05-Mar-2017], (2017).
 
[31] Makhlouf, A.S.H., and Tiginyanu, I., "Nanocoatings and Ultra-thin Films: Technologies and Applications", Elsevier, (2011).
 
[32] Kutz, M., "Handbook of Materials Selection", Wiley Online Library, (2002).
 
[33] Evins, R., “A Review of Computational Optimisation Methods Applied to Sustainable Building Design”, Renew. Sustain. Energy Rev., Vol. 22, pp. 230–245, (2013).
 
[34] Baetens, R., Jelle, B.P.,  and Gustavsen, A., “Properties, Requirements and Possibilities of Smart Windows for Dynamic Daylight and Solar Energy Control in Buildings: A State-of-the-art Review”, Sol. Energy Mater.Sol. Cells, Vol. 94, No. 2, pp. 87–105, (2010).
 
[35] Murakami, K., Nakajima, K., and Kaneko, S., “Initial Growth of SnO2 Thin Film on the Glass Substrate Deposited by the Spray Pyrolysis Technique”, Thin Solid Films, Vol. 515, No. 24, pp. 8632–8636, (2007).
 
[36] Shaeri, J., Yaghoubi, M., Aliabadi, M., and Vakilinazhad, R., “Analysis of using Nano Aerogel Glazing on Solar Heat Gain and Cooling Load in an Office at Hot and Dry, Hot and Humid and Cold Climates of Iran”, J. Solid Fluid Mech., Vol. 7, No. 4, pp. 209–221, (2017).
 
 
[37] “Designbuilder,” [Online]. Available: https://www.designbuilder.co.uk/. [Accessed: 16-Apr-2017], (2017).
Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 20, Issue 4 - Serial Number 53
Fluid Mechanics and Heat Transfer
Winter 2019
Pages 97-117

  • Receive Date 26 January 2018
  • Revise Date 04 July 2018
  • Accept Date 10 March 2019