Energy Performance of Office Buildings in Ghana

Koranteng, Christian

doi:10.4314/just.v30i2.60542

Cited by 15 publications

(13 citation statements)

References 2 publications

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“…With 43 per cent of the occupants using fans in their spaces and 35 per cent (Figure 8) indicating that their fans were efficient (effective and very effective), it goes without saying then that the fans could provide some respite for the occupants. According to the research, fans have been observed to reduce air temperature to an estimated 2°C (Koranteng, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Through purposive sampling, 225 students who are all residence of one of the three halls on KNUST campus were selected for the study. The Mahoney Tables were used to generate a set of reference tables as a guide to climate appropriate designs (Koranteng, 2010). The guidelines for entering data into the Mahoney Tables are presented and explained fully by many researchers (Xia, 2012; Koranteng, 2010; Upadhyay et al , 2006; Raydan and Melki, 2005).…”

Section: Methodsmentioning

confidence: 99%

“…The Mahoney Tables were used to generate a set of reference tables as a guide to climate appropriate designs (Koranteng, 2010). The guidelines for entering data into the Mahoney Tables are presented and explained fully by many researchers (Xia, 2012; Koranteng, 2010; Upadhyay et al , 2006; Raydan and Melki, 2005). Results of thermal comfort analysis were obtained by entering the annual minimum and maximum temperature and relative humidity values to give design indicators for KNUST.…”

Section: Methodsmentioning

confidence: 99%

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Climate responsive buildings: a comfort assessment of buildings on KNUST campus, Kumasi

Koranteng

Simons

Essel

2019

JEDT

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Purpose The ever-increasing demand and consumption of energy and the effects of global warming with its long-term comrade, climate change, is obvious today than ever before. In today’s world, naturally-ventilated buildings hardly provide the satisfaction that occupants need and wish for. It’s on this backdrop that the study aims to investigate how responsive buildings on the Kwame Nkrumah University of Science and Technology, Kumasi, Ghana campus are to its warm humid climate and assess students thermal comfort levels. Design/methodology/approach Quantitative approach was adopted for the study. Empirical investigation was carried out using the survey approach. In total, 14 buildings (offices, classrooms and halls of residences) were assessed using the Mahoney Tables. Again, subjective thermal perceptions of occupants in the halls of residences was sought. A total of 214 valid questionnaires were used for the analysis. Findings Adaptive principles like the Mahoney Tables are not followed in recent years. Even where these principles have been followed, indoor spaces were still found to be uncomfortable. In total, 58 per cent of the occupants in all the three halls of residence voted in the comfort band: an indication unacceptable sensations. Warm sensation votes (44 per cent) was more than cool sensation votes (29 per cent). In warm sensation, 39 per cent of the subjects preferred cooler environment. The occupants felt that opening windows and the use of fans could keep them comfortable. Moreover, 48 per cent of the subjects voted that their fans and windows were effective. Originality/value The papers contribution to the body of knowledge is the provision of empirical evidence in the field of adaptive designs and thermal comfort. There is a strong indication from the results that human activities in terms of blatant disregard for laid down design principles coupled with the worsening situation of global warming is making interior spaces ever uncomfortable.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Climate responsive buildings: a comfort assessment of buildings on KNUST campus, Kumasi

Koranteng

Simons

Essel

2019

JEDT

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“…Therefore, minimizing heat transfer through building envelope is crucial for reducing cooling load. The selection of building fabrics should be carefully considered to enhance their potential in minimizing heat and moisture transfer through building components for improved performance, and consequently, the energy and indoor environmental quality [8]- [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Thermo-Physical Properties of Cement-Based Blocks of Varied Sand Types Using Cost-Effective Enhancement Approach

Adjei¹,

Amos-Abanyie²,

Omer³

2020

OJEE

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The dominant property of building envelope fabric which contributes significantly to minimize electricity utilization in building is the thermo-physical properties. There is inadequate literature on representative practical data of thermo-physical properties of the dominant building envelope components in Ghana. This study aims to use cost-effective approach to characterize the thermo-physical properties of only cement-based mortar and concrete blocks used in Ghana for building components specifically wall design. Mixed methods research design was employed to achieving the aim. A questionnaire survey was used among sampled building fabric components manufacturers to pick representative data on thermos-physical properties of their mortar and concrete blocks. Also, an experimental procedure employing a transient tech-How to cite this paper: Adjei, E.A.,

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“…In the building sector, the increased use of airconditioners, inefficient curtain walls and sliding windows, and the lack of sustainable design principles, especially in office buildings have contributed to the present energy situation (Koranteng, 2010). The overall energy performance of a window assembly is dependent not only on the glazing and frame materials themselves, but on a number of architectural and interior design decisions (Carmody et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Passive Analysis of the Effect of Window Size and Position on Indoor Comfort for Residential Rooms in Kumasi, Ghana

Koranteng¹,

Essel²,

Nkrumah³

2015

International Advanced Research Journal in Science, Engineering

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Abstract:The amount of solar radiation through the fenestration of a building into the interior space is a key factor in assessing the indoor comfort and the eventual energy used in cooling off these spaces. In predominantly hot humid regions like Ghana which receives sunlight all year around, buildings and for that matter windows should be oriented to minimize solar gain and maximize natural ventilation. Windows are possibly the most complex and interesting elements in every habitable structure. Heat loss and heat gain through a window will not only depend on the type of window and its properties alone but also the size and the position of the same. This paper describes an investigation into the consequence of window sizes (varied wall-to window -ratio) and it"s positioning on indoor thermal comfort for residential buildings in Ghana. A typical room of 3m x 4m was parametrically simulated using the Tas tool. Various window sizes with diverse WWR were then probed into with varying positions (low, middle and high). The result showed that the ideal window to wall ratio for achieving almost comfortable indoor conditions should be between 10 to 40%. Meanwhile, the various positions of the windows did not seem to have any effect on the indoor temperature values since all the values were the same. The study should lead to an improved residential design with appropriate window sizes and correct positions which will ensure indoor comfort and thereby reducing the total energy used in cooling.

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Energy Performance of Office Buildings in Ghana

Cited by 15 publications

References 2 publications

Climate responsive buildings: a comfort assessment of buildings on KNUST campus, Kumasi

Climate responsive buildings: a comfort assessment of buildings on KNUST campus, Kumasi

Characterization of Thermo-Physical Properties of Cement-Based Blocks of Varied Sand Types Using Cost-Effective Enhancement Approach

Passive Analysis of the Effect of Window Size and Position on Indoor Comfort for Residential Rooms in Kumasi, Ghana

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