The energy savings potential of using dynamic external louvers in an office building

Hammad, Fawwaz T.; Abu-Hijleh, Bassam

doi:10.1016/j.enbuild.2010.05.024

Cited by 166 publications

(77 citation statements)

References 10 publications

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“…The reduction of these loads is roughly proportional to the degree of the louvers openness and its relation to solar position [22].…”

Section: Solution Systemsmentioning

confidence: 99%

Daylight Quality in Healthcare Design, Daylight Measurements Results and Discussion, Case Study: Jordan University Hospital

Diab¹,

Qadourah²,

Hammad³

2017

JEPE

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This study's purpose is to evaluate and analyse the indoor daylight quality in Pediatrics Ward in JUH (Jordan University Hospital). It conducts an investigative analysis associated with an evaluative approach for the daylight situation in patient rooms in the children section. A multi-method approach used including on-site measurements, and building model to develop a framework for lighting design in Paediatrics Ward, in order to determine whether the current quality meets the recommended values for patient rooms by CIBSE or not. The study considered the following variables: the differences in daylight environments (illuminance, luminance level, daylight factor), and the physical environment properties of patient rooms in the hospital. The study found that the indoor daylight performance in terms of illuminance, luminance level, and daylight factor in east patient rooms are higher than the recommended values by CIBSE in the area nearest to glass window at the morning and less than the recommended values in the depth of the room at afternoon. Therefore, solar reflective technologies and shading system must be provided for enhanced day lighting control, avoid excessive glare and to guarantee a good level of visual comfort for patients and staff while reducing artificial lighting demand.

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“…The reduction of these loads is roughly proportional to the degree of the louvers openness and its relation to solar position [22].…”

Section: Solution Systemsmentioning

confidence: 99%

Daylight Quality in Healthcare Design, Daylight Measurements Results and Discussion, Case Study: Jordan University Hospital

Diab¹,

Qadourah²,

Hammad³

2017

JEPE

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“…For this purpose, especially, in recent years, both in Turkey and at the international level, much research on alternative energy resources has been undertaken [4,5]. Most of this research has been related to energy saving illumination systems for the optimal use of electric energy.…”

Section: Introductionmentioning

confidence: 99%

Approximate and Three-Dimensional Modeling of Brightness Levels in Interior Spaces by Using Artificial Neural Networks

Şahin¹,

Oğuz²,

Büyüktümtürk³

2015

Journal of Electrical Engineering and Technology

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-In this study, artificial neural networks were used to determine the intensity of brightness in interior spaces. The illumination elements to illuminate indoor spaces were considered, not individually, but as a system. So, during the planned maintenance periods of an illumination system, after its design and installation, simple brightness level measurements must be taken. For a threedimensional evaluation of the brightness level in indoor spaces in a speedy and accurate manner, the obtained brightness level measurement results and artificial neural network model were used. Upon estimation of the most suitable brightness level for indoor spaces by using the artificial neutral network model, the energy demands required by the illumination elements decreased. Consequently, in this study, with estimations of brightness levels, the extent to which the artificial neutral networks become successful was observed and more correct results have been obtained in terms of both economy and usage.

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“…The external fixed shading device's geometry was optimized in order to reduce the overall energy consumption in an office room with extensive glazing and moveable venetian blinds [8]. Furthermore, Hammad et al [9] explored the influence of external dynamic louvers on the energy consumption of an office building located in Middle East region and identified the optimal angle for louvers with respect to energy performance. Study by Nielsen et al [10] is of a seldom research using purely computer simulation technique in quantifying several physical performance including energy demand, indoor air quality, the amount of daylight available, and visual comfort.…”

Section: Introductionmentioning

confidence: 99%

Design and Energy Performance of a Buoyancy Driven Exterior Shading Device for Building Application in Taiwan

2015

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Traditional dynamic shading systems are usually driven by electricity for continuously controlling the angle of blind slats to minimize the indoor solar heat gain over times. This paper proposed a novel design of buoyancy driven dynamic shading system, using only minimum amount of electricity. The energy performance and the improved thermal comfort induced by the system were simulated by EnergyPlus for a typical office space under the context of Taiwanese climate. The design processes are composed of three parts: an alterable angle of blind slats that raises the energy performance to be suitable for every orientation, the buoyancy driven transmission mechanism, and a humanized controller that ensures its convenience. The environmental friendly design aspects and control mechanisms to fulfill demands for manufacturing, assembling, maintenance and recycling, etc., were also presented as readily for building application. Besides, the effectiveness of cooling energy saving and thermal comfort enhancing were compared against the cases without exterior blinds and with traditional fixed blinds installed. The results show that the cooling energy is drastically reduced over times and the blind system is effectively enhancing the indoor thermal comfort. OPEN ACCESSEnergies 2015, 8 2359

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The energy savings potential of using dynamic external louvers in an office building

Cited by 166 publications

References 10 publications

Daylight Quality in Healthcare Design, Daylight Measurements Results and Discussion, Case Study: Jordan University Hospital

Daylight Quality in Healthcare Design, Daylight Measurements Results and Discussion, Case Study: Jordan University Hospital

Approximate and Three-Dimensional Modeling of Brightness Levels in Interior Spaces by Using Artificial Neural Networks

Design and Energy Performance of a Buoyancy Driven Exterior Shading Device for Building Application in Taiwan

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