In the past decades, research about energy consumption reduction has become a trend due to concern of wastage that leads negative impact on environment. Commercial sector produces higher compared other sectors in Malaysia and hospital building is one highest consumptions commercial sector. Continuous operation time complexity engineering system are some reasons for high buildings costs. This study examines electricity load apportioning Selangor, through detailed audit. From audit, several...

The effect of helical tape inside a conical diffuser on the temperature distribution is examined. In present paper with different pitches (20 mm, 25 and 30 mm) geometries ( H =10mm, 15mm) same pitch (30mm) are studied in order to observe their distribution. length diffuser, inlet diameter, outlet divergent angle kept constant for all tape. analysis carried out using CFD software k -ε turbulence model. results show that small gives better temperature, increasing height improves...

An experimental study on thermal performance of a copper heat pipe operated with sintered powder wick has been performed. A miniature cylindrical small outer diameter, Ø10 mm and 300 in length, chosen the study. attempt is also made to design, fabricate assemble test rig be used for experiment. The investigated at various inputs inclination angles (orientations). aim this evaluate compare based temperature differential between evaporator condenser sections, resistance conductivity. results...

Heat distribution and flow behaviors in an annular diffuser with twisted rectangular hub have been numerically simulated the present work. The study is conducted three different twist ratios (Y/W = 2.3, 1.5, 1.16) for Reynolds number 2.5 × 10 4 . geometry of inlet condition are kept constant. results show that heat increases as ratio (Y/W) decreases.

Abstract The infiltration of oxygen is unfavorable since it burned away the biomass. Other parameters were also contributed to production biochar. experiments on mangrove wood conducted using a fixed bed pyrolysis reactor with temperature range 300°C 600°C, from 0% 10% and holding time 2 hours 4.4 hours. Response surface methodology (RSM) was implanted for process optimization. There significant effect percentages biochar yield within study. Results show that optimum 15.2% when temperature,...

A low temperature thermo-chemical conversion of biomass to maximise the hydrogen-rich sync gas product replicate a one-step hydrogen production using oil palm empty fruit bunches (EFB) as an alternative process for renewable is studied. The slow pyrolysis with inexpensive and abundant selected catalysts alkali metal hydroxides such NaOH conducted in pyrolyser unit continuous feeding system. bio-hydrogen expected be free CO CO2, could optimized at relatively 500-600K, which significantly...

The presence of oxygen from air infiltration during the carbonization process biomass is expected to be detrimental biochar yield and properties. Experimental study was carried out on oil palm shell in a fixed-bed pyrolyser under various concentrations ranging 0% 11 % by varying nitrogen fractions pyrolysing gas mixture. two critical parameters: bed temperature holding time were also varied. Process optimization Response Surface Methodology (RSM) employing Central Composite Design (CCD)...

Abstract Universiti Teknologi MARA (UiTM) is Malaysia’s largest institution of higher learning (IHE). The university based on 13 state campuses and 21 satellite campuses. Selangor has the number UiTM campuses, main anchor campus located in capital, Shah Alam. As for which committed to implement low carbon cities framework program focusing five GHG reduction elements through energy, mobility, waste, water; greenery water bodies. This study reveals operational assessment Alam, using city-based...

A heat pipe is a heat-transfer device that use the principles of thermal conductivity and phase change to transfer between two ends at almost constant temperature. The peformance cylindrical pipes depends on design parameters such as dimensions pipe, material, wick structure working fluid. An experimental strategy was designed study effect these performance pipes. conceived by employing Taguchi method. final aim experiments come up with will yield optimum performance. This paper presents an...

Fuel combustion in a mixture of O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /CO -recycled is an emerging technology for cost-effective power generation with carbon capture and sequestration that has extra benefits NO xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> emission reductions lower flue gas cleanup cost. This paper presents experimental results pulverized coal 20 kW furnace on air mixtures. The effectiveness oxidant...

Under the Net Energy Metering (NEM) 2.0 Scheme which was introduced by Sustainable Development Authority (SEDA) of Malaysia in January 2019 consumers could benefit more from installing solar PV on rooftops their homes allow excess generated energy to be exported grid a one-on-one offset basis, instead at Displaced Cost as previously implemented under NEM 1.0. The period return investment (ROI) installations would depend both, consumption patterns and system configurations, addition external...

Due to the fact that majority of large buildings are being built in densely populated urban areas, Malaysian use more energy per square metre floor space than those other nations. The researcher and intervention designer will be able determine impact each social parameter on building performance with aid their understanding how which parameters contribute performance. consumption profiles may include gender age-related variables. When taking into account correlation between age consumption,...

The level of education has had a considerable impact on energy usage. Office activity requires energy, and this one area is especially subject to changes in demand patterns. understanding trend applicable office buildings which found many benefits like cost saving better productivity among workers who have access higher level. Neural networks are appealing the field prediction. use artificial neural network technology provides benefit reducing consumption buildings. uses predict based...

In general, the solar collector of a Green Tower is either air-filled or empty space. This condition allows chimney to have constant air flow supply from collector. this study, water media introduced inside as an effort increase performance Tower. As energy harvested, stored Thus, study investigates using with water-filled media. Â The investigation done by simulating Computer Fluid and Dynamic (CFD) software. From here, viability employing validated. report presents mathematical model...