Investigating the Effectiveness of Self-Shading Strategy on Overall Thermal Transfer Value and Window Size in High Rise Buildings
So much energy is used in high rise buildings to fulfill
the basic needs of users such as lighting and thermal comfort.
Malaysia has hot and humid climate, buildings especially high rise
buildings receive unnecessary solar radiation that cause more solar
heat gain. Energy use specially electricity consumption in high rise
buildings has increased. There have been growing concerns about
energy consumption and its effect on environment. Building, energy
and the environment are important issues that the designers should
consider to them. Self protected form is one of possible ways against
the impact of solar radiation in high rise buildings. The Energy
performance of building envelopes was investigated in term of the
Overall Thermal Transfer Value (OTTV ).In this paper, the amount
of OTTV reduction was calculated through OTTV Equations to
clear the effectiveness of self shading strategy on minimizing energy
consumption for cooling interior spaces in high rise buildings which
has considerable envelope areas against solar radiation. Also increasing
the optimum window area was investigated using self-shading
strategy in designing high rise buildings. As result, the significant
reduction in OTTV was shown based on WWR.In addition slight
increase was demonstrated in WWR that can influence on visible
comfort interior spaces.
[1] J.C. Lam et al, Residential building envelope heat gain and coolin,
Energy, vol. 37, 2005, pp. 529-544.
[2] J.C. Lam, A survey of existing residential buildings and envelope designs
in Hong Kong, Housing Science, vol 18, 1994.
[3] American Society of Heating Refrigerating and Air Conditioning Engineers.
Energy conservation in new building design,ASHRAE Standard
90A-1980 Atlanta, GA: ASHRAE; 1980.
[4] D.H.W Li and J.C. Lam,Solar heat gain factors and the implications to
building designs in subtropical region,Energ and Buildings, vol.32, 2000,
pp 4755.
[5] D.H.W Li and J.C. Lam and S.L.Wong,Daylighting and its implications
to overall thermal transfer value (OTTV) determinations , Energy, vol.27
, 2002, pp 991-1008.
[6] J.C. Lam and D.H.W Li and S.Cheung,An analysis of electricity end-use
in air-conditioned office buildings in Hong Kong,Building and Environment,
vol. 38, 2003, pp 493-498.
[7] Depatment of standard Malaysia, Code of parctice on energy efficciency
and use of renewable energy for non-residential buildings(MS
1525:2007),FIRST REVISION, 2007.
[8] S. Chirartattananon,J. Nooritanon and R. Balaka, Day lighting for energy
conservation in the tropics:the lumen method and the OTTV, Energy,
vol.21, no. 6, 1996, pp 505-510.
[9] A.F. Tzikopopoulos and M.C Karatza and J.A. Paravanits. Modeling
energy efficiency of bioclimaticbuildings,Energy and Buildings, vol. 37,
2005, pp.529-544.
[10] G. Capeluto,Energy performance of the self-shading building envelope,
Energ and Buildings, vol.35, 2003, pp 327-336.
[11] C.S. Ling,Minimizing solar insolation on high rise building in
Malaysia,2005.
[12] A.Z. Ahmed,Daylighting as a passive solar design strategy in tropical
buildings: a case study of Malaysia,Energy Conversion and Management,
vol. 43, 2002, pp 1725-1736.
[1] J.C. Lam et al, Residential building envelope heat gain and coolin,
Energy, vol. 37, 2005, pp. 529-544.
[2] J.C. Lam, A survey of existing residential buildings and envelope designs
in Hong Kong, Housing Science, vol 18, 1994.
[3] American Society of Heating Refrigerating and Air Conditioning Engineers.
Energy conservation in new building design,ASHRAE Standard
90A-1980 Atlanta, GA: ASHRAE; 1980.
[4] D.H.W Li and J.C. Lam,Solar heat gain factors and the implications to
building designs in subtropical region,Energ and Buildings, vol.32, 2000,
pp 4755.
[5] D.H.W Li and J.C. Lam and S.L.Wong,Daylighting and its implications
to overall thermal transfer value (OTTV) determinations , Energy, vol.27
, 2002, pp 991-1008.
[6] J.C. Lam and D.H.W Li and S.Cheung,An analysis of electricity end-use
in air-conditioned office buildings in Hong Kong,Building and Environment,
vol. 38, 2003, pp 493-498.
[7] Depatment of standard Malaysia, Code of parctice on energy efficciency
and use of renewable energy for non-residential buildings(MS
1525:2007),FIRST REVISION, 2007.
[8] S. Chirartattananon,J. Nooritanon and R. Balaka, Day lighting for energy
conservation in the tropics:the lumen method and the OTTV, Energy,
vol.21, no. 6, 1996, pp 505-510.
[9] A.F. Tzikopopoulos and M.C Karatza and J.A. Paravanits. Modeling
energy efficiency of bioclimaticbuildings,Energy and Buildings, vol. 37,
2005, pp.529-544.
[10] G. Capeluto,Energy performance of the self-shading building envelope,
Energ and Buildings, vol.35, 2003, pp 327-336.
[11] C.S. Ling,Minimizing solar insolation on high rise building in
Malaysia,2005.
[12] A.Z. Ahmed,Daylighting as a passive solar design strategy in tropical
buildings: a case study of Malaysia,Energy Conversion and Management,
vol. 43, 2002, pp 1725-1736.
@article{"International Journal of Architectural, Civil and Construction Sciences:63453", author = "Mansour Nikpour and Mohd Zin kandar and Mohammad Ghomeshi and Nima Moeinzadeh and Mohsen Ghasemi", title = "Investigating the Effectiveness of Self-Shading Strategy on Overall Thermal Transfer Value and Window Size in High Rise Buildings", abstract = "So much energy is used in high rise buildings to fulfill
the basic needs of users such as lighting and thermal comfort.
Malaysia has hot and humid climate, buildings especially high rise
buildings receive unnecessary solar radiation that cause more solar
heat gain. Energy use specially electricity consumption in high rise
buildings has increased. There have been growing concerns about
energy consumption and its effect on environment. Building, energy
and the environment are important issues that the designers should
consider to them. Self protected form is one of possible ways against
the impact of solar radiation in high rise buildings. The Energy
performance of building envelopes was investigated in term of the
Overall Thermal Transfer Value (OTTV ).In this paper, the amount
of OTTV reduction was calculated through OTTV Equations to
clear the effectiveness of self shading strategy on minimizing energy
consumption for cooling interior spaces in high rise buildings which
has considerable envelope areas against solar radiation. Also increasing
the optimum window area was investigated using self-shading
strategy in designing high rise buildings. As result, the significant
reduction in OTTV was shown based on WWR.In addition slight
increase was demonstrated in WWR that can influence on visible
comfort interior spaces.", keywords = "Self-shading strategy, high rise buildings, Overall thermal transfer value (OTTV ), Window to wall ratio (WWR).", volume = "5", number = "2", pages = "103-6", }