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Efficiency analysis of a passive daylighting system based on Northern Malaysia’s climate

2025-04 , Mohd Sani Mohamad Hashim , Muhammad Amin Zulkifli Din , Abdul Halim Ismail , Mohd Hafif Basha Mohamad Jamel Basha , Nasrul Amri Mohd Amin , Ng Yi Fei , Muhamad Safwan Muhamad Azmi , Siti Marhainis Othman , Nur Saifullah Kamarrudin

Daylighting design strategy is important in order to have adequate lighting source in a room and necessary to decrease energy consumption for artificial lighting. Passive daylighting system utilizes daylight by collecting, reflecting and diffusing the natural light throughout a given area. The purpose for this study is to monitor, compare and analyse an optimum light pipe system design that can scatter daylight into a room based on three case studies. Lighting analysis was conducted using Autodesk 3ds Max Design software throughout the project based on the actual geographical parameters of Universiti Malaysia Perlis, Malaysia and also using the real sun azimuth on working hours. The results were compared according to the respective designs in order to observe the maximum internal illuminance and the average internal illuminance. The results show that the straight geometry with low aspect ratio produces the highest interior light intensity among other light pipe systems and the average internal illuminance values in the room was able to reach the minimum requirement of a small room which is 200 – 500 lux.

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Effect of various bending angles on a passive light pipe for eco-daylighting systems

2017-10-29 , Ng Y. F. , Mohd Sani Mohamad Hashim , Din M.A.Z. , Nasrul Amri Mohd Amin , Nur Saifullah Kamarrudin , Mohd Hafif Basha Mohamad Jamel Basha , Md. Tasyrif bin Abdul Rahman

Daylighting systems is one of alternative to reduce a high energy consumption that caused by artificial lighting. However the use of passive light pipes in daylighting systems with various bending angles may affect the efficiency of light transfer from the sunlight to the room. Thus this paper is proposed to study the effect of various bending angles on a light pipe. Three bending angles of light pipe, which are 0°, 30° and 45°, were analyzed through the experimental works. A test bed room was constructed in order to simulate daylighting in a room. The results were then visualized in graphs based on the efficiency by considering the maximum average internal illuminance achieved by each light pipe. From the results, it shows that when the bending angle increases, the average internal illuminance decreases. And the highest average internal illuminance was achieved by 0° light pipe.

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Design optimization of rear uprights for UniMAP Automotive Racing Team Formula SAE racing car

2017-10-29 , Azmeer M. , Mohd Hafif Basha Mohamad Jamel Basha , Hamid M.F. , Md. Tasyrif bin Abdul Rahman , Mohd Sani Mohamad Hashim

In an automobile, the rear upright are used to provide a physical mounting and links the suspension arms to the hub and wheel assembly. In this work, static structural and shape optimization analysis for rear upright for UniMAP's Formula SAE racing car had been done using ANSYS software with the objective to reduce weight while maintaining the structural strength of the vehicle upright. During the shape optimization process, the component undergoes 25%, 50% and 75 % weight reduction in order to find the best optimal shape of the upright. The final design of the upright is developed considering the weight reduction, structural integrity and the manufacturability. The final design achieved 21 % weight reduction and is able to withstand several loads.

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Publication

Design and static structural analysis of a race car chassis for Formula Society of Automotive Engineers (FSAE) event

2017-10-29 , M. L. Mohamad , Md. Tasyrif bin Abdul Rahman , Shah Fenner Khan Mohamad Khan , Mohd Hafif Basha Mohamad Jamel Basha , Abdul Hamid Adom , Mohd Sani Mohamad Hashim

The main purpose of this study is to make improvement for the UniMAP Automotive Racing Team car chassis which has several problems associated with the chassis must be fixed and some changes are needed to be made in order to perform well. This study involves the process of designing three chassis that are created based on the rules stated by FSAE rules book (2017/2018). The three chassis will undergo analysis test that consists of five tests which are main roll hoop test, front roll hoop test, static shear, side impact, static torsional loading and finally one of them will be selected as the best design in term of Von Mises Stress and torsional displacement. From the results obtained, the new selected chassis design which also declared as the new improved design poses the weight of 27.66 kg which was decreased by 16.7% from the existing chassis (32.77 kg). The torsional rigidity of the improved chassis increased by 37.74%.