Journal Home > Volume 6 , Issue 4
Building Simulation 2013, 6(4): 351-364 https://doi.org/10.1007/s12273-013-0124-9
Research Article | Issue | Published: 25 May 2013

Cooling load reduction effect and its mechanism in between-glass cavity and venetian blind operation during the summer season

Show Author's Information Kwang Ho Lee1,  Taeyeon Kim2( ),  Garam Lee2,  Jungyun Lee2
Department of Architectural Engineering, Hanbat National University, Daejeon, R.O. Korea
Department of Architectural Engineering, Yonsei University, Seoul, R.O. Korea
Keywords:
cooling load, energy simulation, venetian blinds;between-glass cavity operation, heat balance method
Cite this article:
Lee KH, Kim T, Lee G, et al. Cooling load reduction effect and its mechanism in between-glass cavity and venetian blind operation during the summer season. Building Simulation, 2013, 6(4): 351-364. https://doi.org/10.1007/s12273-013-0124-9
Download citation
EndNote(RIS)
BibTeX

469

Views

10

Downloads

Citations

12

Crossref

N/A

WoS

17

Scopus

0

CSCD

Abstract Full text About this article

The proper operation of venetian blinds in between-glass cavity airspaces is one of the most commonly used passive control techniques and can significantly reduce the cooling load and energy use in buildings. This study investigated the cooling load reduction effect of the blind integrated with the cavity operation. A full heat balance analysis was performed using EnergyPlus to provide a detailed understanding of the heat transfer mechanism that takes place around the blind and between-glass cavity. A sensitivity analysis was also carried out to evaluate the effects of different slat angles and blind operation hours. The results show that integration of the blind and between-glass cavity operations can significantly reduce the cooling load in buildings. The cooling load reduction effect of the cavity operation (by approximately 50%) was greater than that of the blind operation (by 5% to 40%, depending on slat angle and operating hours). It was found that the interzone heat transfers between the cavity and the room space and convection heat fluxes from each surface mainly contribute to the total cooling load reduction. In addition, the double-sided blind had a greater potential to reduce the cooling load compared with a conventional single-sided blind due to its greater capability of reflecting direct solar radiation and preventing diffuse solar radiation from penetrating the room space. The results of the study show that the largest reduction of cooling load can be achieved by the cavity operation, followed by the blind operation and the proper selection of operating hours for the blinds.


menu
Abstract
Full text
Outline
About this article

Cooling load reduction effect and its mechanism in between-glass cavity and venetian blind operation during the summer season

Show Author's information Kwang Ho Lee1, Taeyeon Kim2( ), Garam Lee2, Jungyun Lee2
Department of Architectural Engineering, Hanbat National University, Daejeon, R.O. Korea
Department of Architectural Engineering, Yonsei University, Seoul, R.O. Korea

Abstract

The proper operation of venetian blinds in between-glass cavity airspaces is one of the most commonly used passive control techniques and can significantly reduce the cooling load and energy use in buildings. This study investigated the cooling load reduction effect of the blind integrated with the cavity operation. A full heat balance analysis was performed using EnergyPlus to provide a detailed understanding of the heat transfer mechanism that takes place around the blind and between-glass cavity. A sensitivity analysis was also carried out to evaluate the effects of different slat angles and blind operation hours. The results show that integration of the blind and between-glass cavity operations can significantly reduce the cooling load in buildings. The cooling load reduction effect of the cavity operation (by approximately 50%) was greater than that of the blind operation (by 5% to 40%, depending on slat angle and operating hours). It was found that the interzone heat transfers between the cavity and the room space and convection heat fluxes from each surface mainly contribute to the total cooling load reduction. In addition, the double-sided blind had a greater potential to reduce the cooling load compared with a conventional single-sided blind due to its greater capability of reflecting direct solar radiation and preventing diffuse solar radiation from penetrating the room space. The results of the study show that the largest reduction of cooling load can be achieved by the cavity operation, followed by the blind operation and the proper selection of operating hours for the blinds.

Keywords: cooling load, energy simulation, venetian blinds;between-glass cavity operation, heat balance method

References(22)

HH Alzoubi, AH Al-Zoubi (2010). Assessment of building facade performance in terms of daylighting and the associated energy consumption in architectural spaces: Vertical and horizontal shading devices for southern exposure facades. Energy Conversion and Management, 51: 1592-1599.
DOI Google Scholar
ASHRAE (2007). ASHRAE Standard 90.2, Energy-Efficient Design of Low-Rise Residential Buildings. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
ASHRAE (2009a). ASHRAE Fundamentals Handbook, Chapter 19 Energy Estimating and Modeling Methods. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
ASHRAE (2009b). ASHRAE Fundamentals Handbook, Chapter 16 Ventilation and Infiltration. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
M Bessoudo, A Tzempelikos, AK Athienitis, R Zmeureanu (2010). Indoor thermal environmental conditions near glazed facades with shading devices—Part I: Experiments and building thermal model. Building and Environment, 45: 2506-2516.
DOI Google Scholar
RG Bhavani, MA Khan (2009). An intelligent simulation model for blind position control in daylighting schemes in buildings. Building Simulation, 2: 253-262.
DOI Google Scholar
SG Colaco, CP Kurian, VI George, AM Colaco (2008). Prospective techniques of effective daylight harvesting in commercial buildings by employing window glazing, dynamic shading devices and dimming control—A literature review. Building Simulation, 1: 279-289.
DOI Google Scholar
DB Crawley, LK Lawrie, FC Winkelmann, WF Buhl, YJ Huang, CO Pedersen, RK Strand, RJ Liesen, DE Fisher, MJ Witte, J Glazer (2001). EnergyPlus: Creating a new-generation building energy simulation program. Energy and Buildings, 33: 319-331.
DOI Google Scholar
EnergyPlus (2010a). EnergyPlus Engineering Reference. The Reference to EnergyPlus Calculations. Available: http://www.energyplus.gov.
EnergyPlus (2010b). EnergyPlus Input Output Reference. The Encyclopedic Reference to EnergyPlus Input and Output. Available: http://www.energyplus.gov.
V Gavan, M Woloszyn, F Kuznik, JJ Roux (2010). Experimental study of a mechanically ventilated double-skin facade with venetian sun-shading device: A full-scale investigation in controlled environment. Solar Energy, 84: 183-195.
DOI Google Scholar
E Gratia, A De Herde (2007). The most efficient position of shading devices in a double-skin facade. Energy and Buildings, 39: 364-373.
DOI Google Scholar
G He, L Shu, S Zhang (2011). Double skin facades in the hot summer and cold winter zone in China: Cavity open or closed? Building Simulation, 4: 283-291.
DOI Google Scholar
ISO Standard (2001). ISO Standard 15099, Thermal Performance of Windows, Doors and Shading Devices—Detailed Calculations. International Organization for Standardization.
Korea Energy Management Corporation (2011). Efficient Energy Usage Standard.
A Mahdavi (2008). Predictive simulation-based lighting and shading systems control in buildings. Building Simulation, 1: 25-35.
DOI Google Scholar
A Mahdavi, A Mohammadi, E Kabir, L Lambeva (2008). Shading and lighting operation in office buildings in Austria: A study of user control behavior. Building Simulation, 1: 111-117.
DOI Google Scholar
G van Moeseke, I Bruyere, A De Herde (2007). Impact of control rules on the efficiency of shading devices and free cooling for office buildings. Building and Environment, 42: 784-793.
DOI Google Scholar
E Shen, TZ Hong (2009). Simulation-based assessment of the energy savings benefits of integrated control in office buildings. Building Simulation, 2: 239-251.
DOI Google Scholar
H Simmler, U Fischer, F Winkelmann (1996). Solar-thermal window blind model for DOE-2. Simulation Research Group Internal Report, Lawrence Berkeley National Laboratory.
A Tzempelikos, AK Athienitis (2007). The impact of shading design and control on building cooling and lighting demand. Solar Energy, 81: 369-382.
DOI Google Scholar
A Tzempelikos, M Bessoudo, AK Athienitis, R Zmeureanu (2010). Indoor thermal environmental conditions near glazed facades with shading devices—Part II: Thermal comfort simulation and impact of glazing and shading properties. Building and Environment, 45: 2517-2525.
DOI Google Scholar
Publication history
Copyright
Acknowledgements

Publication history

Received: 18 September 2012
Revised: 19 January 2013
Accepted: 19 February 2013
Published: 25 May 2013
Issue date: December 2013

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2013

Acknowledgements

This research was supported by a grant (11 High-tech Urban C13) from High-tech Urban Development Program funded by Ministry of Land, Transport and Maritime Affairs of Korean government. And this work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 20120000734).

Return