Assessment of renewable distributed generation in green building rating system for public hospital

This paper presents an optimization solution for renewable Distributed Generation (DG), as imposed in the Green Building Rating System (GBRS) for a public hospital. Solar photovoltaic DG unit (PV-DG) is identified as a type of DG used in this paper. The proposed optimization via PV-DG coordination will improve the sustainable energy performance of the green building by power loss reduction within accepted lower losses region using Artificial Bee Colony (ABC) algorithm. The setup input data from one of Malaysian public hospitals’ power distribution system is been adopted and simulation results via MATLAB programming show that the optimization of DG forming into bigger-scale imposed system provides a better outcome in minimization of total power losses within appropriate voltage profile as compared to current PV-DG imposed in GBRS. The objective function representing total power losses which also supported by related literature give a measure that forming sufficient and optimal PV-DG assessment criteria is highly important, thus, current PV-DG assessment in GBRS is proposed to be reviewed into new parameter setting for public hospital due to its’ high energy demand and distinctive electrical load profile

Evaluation of Mechanical Performance of Homopolymer Polypropylene/Kenaf Fibre/ Binder using Full Factorial Method

The mechanical performance of kenaf fibre/homopolymer polypropylene/binder composites was studied. Tensile test was used to investigate the tensile strength, tensile modulus and percentage of elongation. Kenaf fibre-homopolymer polypropylene (KFHPP) composites were compounded in an internal batch mixer with the ratio of 10:90, 30:70 and 50:50 in weight fraction. Furthermore, maleated polypropylene (MAPP) as a binder with 1, 3 and 5 % expressed as percentage of weight ratio was mixed in KFHPP composites. A hot pressing machine was used for producing samples of dog bone. From this study, it is found that the tensile strength and tensile modulus increase with increasing kenaf fibre loading and higher percentage of MAPP. In addition, the elongation at break for KFHPP composites shows lower result for increasing kenaf fibre loading. However, when the percentage of MAPP added to KFHPP composites increases, the elongation at break increased slightly. Thus, the result shows that the binder can enhance the interaction between kenaf fibre and homopolymer polypropylene composites, with resulted in better tensile strength and tensile modulus but less function at elongation at break

Design Consideration For Design A Flat And Ring Plastics Part Using Solidworks Software

Various considerations on design of plastic injection moulded parts were applied in initial stage to prevent any defects of end products. Therefore, the objective of this project is to design the plastic injection moulded part by taking consideration on several factors such as draft angle, corner radius and location of gate. In this project, flat plastic part, ring plastic part, core inserts for flat and ring plastic part were designed using SolidWorks software. The plastic part was drawn in sketching mode then the 3D modeling of solid part was generated using various commands. Considerations of plastic part such as draft angle and corner radius with location of gate was considered in the design stage. Finally, it was successfully designed the two plastic parts with their respectively insert by using SolidWorks software. The flat plastic part and ring plastic part were designed for the purpose for future researches for study the weld lines, meld lines, air trapped and geometrical size of the product. Thus, by designing the flat plastic part and ring plastic part having core insert on each part, the completed mould design of two plate mould can be considered. This is because, plastic injection parts are needed to be designed properly in order to neglect any defect when the mould was made

Generation Of A Decision Support System To Enhance The Efficiency Of Lean Manufacturing

Lean manufacturing (LM) is an established process that employs an array of instruments to eradicate waste. A variety of methods have been applied (some more successfully than others) to enhance the effectiveness of this process. This study delves into the introduction of the Intelligent Lean Tools Simulation (iLeTS) to overcome the deficiencies in the LM process and reduce the failure ratio. Fabricated with the use of modelling software, the performance of iLeTS was enhanced by way of an amalgamation involving the visual basic application (VBA) and the multi agent system (MAS). This merging served to enhance the user friendliness of iLeTS, which in turn reduced the required period of usage. Face validity and a usability study were harnessed to evaluate the performance of iLeTS. While face validity was used to authenticate the multi-agent system flow in iLeTS; the usability study was engaged to determine the proficiency of iLeTS when it comes to managing a number of arbitrarily occurring incidents. Subsequent to a thorough examination of a wide range of simulation results (deriving from authentic data), we arrived at the conclusion that (a) the iLeTS is suitable for the automation of the manufacturing process, and (b) the iLeTS can be relied upon for making prompt and appropriate choices

Multi-Objective Optimization Using Box-Behnken Of Response Surface Methodology For High-Speed Machining Of Inconel 718

This study was carried out to investigate how the high-speed milling of Inconel 718 using ball nose end mill could enhance the productivity and quality of the finish parts. The experimental work was carried out through Response Surface Methodology via Box-Behnken design. The effect of prominent milling parameters, namely cutting speed, feed rate, depth of cut (DOC), and width of cut (WOC) were studied to evaluate their effects on tool life, surface roughness and cutting force. In this study, the cutting speed, feed rate, DOC, and WOC were in the range of 100 - 140 m/min, 0.1 - 0.2 mm/tooth, 0.5 - 1.0 mm and 0.2 - 1.8 mm, respectively. In order to reduce the effect of heat generated during the high speed milling operation, minimum quantity lubrication of 50 ml/hr was used. The effect of input factors on the responds was identified by mean of ANOVA. The response of tool life, surface roughness and cutting force together with calculated material removal rate were then simultaneously optimized and further described by perturbation graph. Interaction between WOC with other factors was found to be the most dominating factor of all responds. The optimum cutting parameter which obtained the longest tool life of 60 mins, minimum surface roughness of 0.262 μm and resultant force of 221 N was at cutting speed of 100 m/min, feed rate of 0.15 mm/tooth, DOC 0.5 m and WOC 0.66 mm

Enhancing efficiency of die exchange process through single minute of exchanging die at a textile manufacturing company in Malaysia

The main idea of this research work is to demonstrate the benefit of the Single Minute Exchange of Die (SMED) tool in waste elimination. An initiative involving a selected textile manufacturing company in Malaysia and University Teknikal Malaysia Melaka (UTeM) has been undertaken to support the study. Throughout this initiative, SMED was introduced to improve the time - consuming changeover process at the stamping machine of the chosen textile manufacturing company. This study was conducted based on the SMDE's framework introduced by Shigeo Shingo through the process of data collection, analysis and evolution. It involves conversation of some internal activities to external activities, usage of a jig in mold alignment as well as the creation of a new system to assist pressure settings at the stamping machine. Prior to the implementation, the initial recorded average changeover time of the stamping machine had been significantly reduced to 223.15 min which represent a changeover time saving of 25.62%. In conclusion, the initiative appears to be feasible in demonstrating the benefit of SMED implementation especially in the textile manufacturing company

Tensile Properties Of Ternary Blends For HDPE/PP/Recycle HDPE In Blow Moulding Process

Increasing the environmental concern among peoples have increased the recycling activities, especially for high-density polyethylene (HDPE) bottles. Therefore, recycled HDPE needs to be mixed with other plastic materials to improve their mechanical properties. In this study, recycled HDPE was mixed with virgin HDPE and polypropylene (PP). The ratio of virgin HDPE and PP were set at 10/90, 30/70 and 50/50, meanwhile recycled HDPE was set at 20%, 35% and 50%. The blended materials were extruded into the parison and was blown using extruded blow-moulding machine to produce a 5-litre bottle. The tensile strength and elongation at break of the blended materials were measured using universal testing machine (UTM). Miscibility of the blended materials was also evaluated using differential scanning calorimetry (DSC). The result shows that decreasing the recycled HDPE in the blended materials increases the tensile strength. Meanwhile, increasing the recycled HDPE content in the blended materials increases the elongation at break of the blended materials. DSC curve shows that blended materials are immiscible

Photovoltaic-integrated review and expansion need in green building landscape for bridging the Malaysian RE policy

A literature review is presented specifically on the photovoltaic (PV) as a distributed generation (DG) integration approach and the extensiveness through renewable energy (RE) assessment criteria in current green building rating system (GBRS) to: delineate for further classification in terms of installed-capacity; identify the RE applications’ intent / aim; and recommendation for PV-type DG (PV-DG) expansion needs. The paper aims to close the gap in knowledge, by an empirical review of current RE assessment criteria and to portray the expected evolution of RE for higher installed-capacity in ensuring the government key achievement can be achieved. In considering the expansion needs in GBRS, the optimal technique for PV-DG expansion-limit would serve as a conceptual bridge between expanding mechanism and realization of the Malaysian most recent RE policy specifically on the drastically increment of RE quota. These can be achieved since various DG optimization case studies have been presented and overcome with the improvement impact on the test system, in term of power loss reduction, increased efficiency and optimal cost outcome. Future analysis as well as research direction are proposed and linked with some of the previous optimization reviews in recent literature