Heat Stress Pattern in Conditioned Office Buildings with Shallow Plan Forms in Metropolitan Colombo

Rajapaksha, Upendra

doi:10.3390/buildings9020035

Cited by 3 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Majority of these buildings are found to be with BEIs higher than 110 kWh/m 2 /a, which is an acceptable standard for the energy efficiency building codes [48]. Further, the mean BEI for building stock in CMR is 212 kWh/m 2 /a and thus solidifies that the office building stock in CMR is energy obsolete [49]. Regrettably, the typical office building stock in CMR is not designed with an explicit intent to include climate and environmentally responsive design considerations.…”

Section: Methodsmentioning

confidence: 99%

Environmental Heat Stress on Indoor Environments in Shallow, Deep and Covered Atrium Plan Form Office Buildings in Tropics

Rajapaksha¹

2020

Climate

Self Cite

View full text Add to dashboard Cite

Environmental heat stress on buildings through façades contributes to indoor overheating and thus increases demand for energy consumption. The study analyzed the problem, heat gain risk, of modern air-conditioned multi-level office buildings in tropics, for example Colombo. Plan form, orientation, sectional form and envelope were identified and theorized to understand design interventions to reduce the risk of getting heat stress on indoor environments. On-site thermal performance investigations in multi zones of identified three typical built forms, namely; shallow, deep and covered atrium plan forms, quantified the heat stress. Reaching the daytime indoor and surface temperature in peripheral zones of multi-story office buildings during air conditioning “off-mode” up to 38 °C–42 °C was seen as a critical heat stress situation to be addressed through building design. Shading or insulation on façades to control environmental heat gain and manipulation of building section for night ventilation to remove internal heat developed during the daytime are discussed. However, the significance of the plan form depth was found to be a main contributor in dealing with heat transfer to indoor space. Deep plan form was found to be more effective in controlling environmental heat transfer to indoor space across the plan depth.

show abstract

Section: Methodsmentioning

confidence: 99%

Environmental Heat Stress on Indoor Environments in Shallow, Deep and Covered Atrium Plan Form Office Buildings in Tropics

Rajapaksha¹

2020

Climate

Self Cite

View full text Add to dashboard Cite

show abstract

“…More than 75% of the electricity, energy balance in typical buildings in Sri Lanka is found to be accounted for by the energy consumption for the air conditioning systems. Office buildings in Colombo are recognized as having an annual energy consumption of around ~250 kWh/m 2 /a [23].…”

Section: Operational Energy Aspects Of Modern Office Buildingsmentioning

confidence: 99%

Analysis of Operational Energy between Adaptive Reuse Historic Buildings (ARHB) and Modern Office Buildings: A Case Study in Sri Lanka

Ariyarathna,

Kariyakarawana,

Abeyrathna

et al. 2023

Architecture

View full text Add to dashboard Cite

Adaptive Reuse of Historic Buildings (ARHB) is a new concept in developing countries like Sri Lanka. One of the main concerns for the intendancy of decision makers to ARHB is the operational energy. This paper analyzes the research gap of reusing historical buildings as office spaces by utilizing their structural and architectural designs and preserving the buildings’ authenticity for the future. It further aims to protect energy-efficient historical buildings from getting demolished and replaced with new modern buildings. A set of operational energy variables of modern office buildings and the potential historic buildings that can be reused as office spaces was established. During the early 1990s, old Dutch-era buildings in the country were mainly used as government office buildings. Three Dutch-era buildings in Galle Fort and three modern buildings in Colombo City have been selected as the case studies. Design-Builder (DB) software was used to comprehensively analyze sets of operational energy consumption variables. Selected historic buildings in Galle consumed 143.74 kWh/m2, 156.34 kWh/m2, and 209.39 kWh/m2 while modern buildings consumed 337.29 kWh/m2, 210.99 kWh/m2, and 382.57 kWh/m2 as operational energy, respectively. According to the analysis, the operational energy requirement of ARHB is comparatively lesser than that of modern buildings. This study, therefore, mainly concludes that the historical buildings saved more operational energy than the modern building envelopes while considerably reducing environmental impacts and saving the building energy cost.

show abstract

Occupant perceptions on the thermal comfort guidelines in air-conditioned offices in Colombo, Sri Lanka

Rodrigo¹,

Perera

Ekanayake

2019

International Journal of Construction Management

View full text Add to dashboard Cite

Heat Stress Pattern in Conditioned Office Buildings with Shallow Plan Forms in Metropolitan Colombo

Cited by 3 publications

References 36 publications

Environmental Heat Stress on Indoor Environments in Shallow, Deep and Covered Atrium Plan Form Office Buildings in Tropics

Environmental Heat Stress on Indoor Environments in Shallow, Deep and Covered Atrium Plan Form Office Buildings in Tropics

Analysis of Operational Energy between Adaptive Reuse Historic Buildings (ARHB) and Modern Office Buildings: A Case Study in Sri Lanka

Occupant perceptions on the thermal comfort guidelines in air-conditioned offices in Colombo, Sri Lanka

Contact Info

Product

Resources

About