https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/issue/feed International Journal of Engineering Technologies and Management Research 2022-09-26T06:09:41+00:00 IJETMR Editorial Notification editor@ijetmr.com Open Journal Systems <h2>International Journal of Engineering Technologies and Management Research</h2> <p>is an open access peer reviewed double blind monthly journal that provides monthly publication of articles in all areas of Engineering and Management. It is an international refereed e-journal.</p> <p><strong>Editor-in-Chief:</strong></p> <p><strong>Prof. Sonika Rathi</strong><br>Assistant Professor, BITS Pilani, Pune, Maharashtra, India<br>Email: editor@ijetmr.com</p> <p><strong>Editor:</strong></p> <p><strong>Dr. Tina Porwal</strong><br>PhD, Maharani Laxmibai Girls P.G. College, Indore, India</p> https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1216 AN EFFICIENT COMPROMISED IMPUTATION METHOD FOR ESTIMATING POPULATION MEAN 2022-09-05T08:33:59+00:00 Sandeep Mishra smisra1983@yahoo.co.in <p>This paper suggests a modified new ratio-product-exponential imputation procedure to deal with missing data in order to estimate a finite population mean in a simple random sample without replacement. The bias and mean squared error of our proposed estimator are obtained to the first degree of approximation. We derive conditions for the parameters under which the proposed estimator has smaller mean squared error than the sample mean, ratio, and product estimators. We carry out an empirical study which shows that the proposed estimator outperforms the traditional estimators using real data.</p> 2022-09-05T00:00:00+00:00 Copyright (c) 2022 Dr. Sandeep Mishra https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1222 COMPLIANCE OF THERMAL COMFORT PARAMETERS WITHIN THE STUDENTS’ DORMITORY, RESIDENTIAL, AND PUSAT ISLAM ENGINEERING CAMPUS, USM BASED ON INDUSTRY CODE OF PRACTICE ON INDOOR AIR QUALITY (ICOP) 2010 2022-09-12T08:50:29+00:00 Ummi Zulaikha Ahmad Halili ummizulaikha0807@gmail.com Nor Azam Ramli ceazam@usm.my Nur Baitul Izati Rasli nurbaitulizati@gmail.com <p>This study assessed occupants’ satisfaction with their surrounding temperature conditions. The study was carried out at the student’s dormitory, residential and prayer hall of Pusat Islam Engineering Campus, USM. It entailed determining the compliance of thermal comfort parameters; temperature (T), relative humidity (RH) and air movement (AM). The parameters are then used as input in the Center for the Built Environment (CBE) Thermal Comfort Tool to obtain Predicted Mean Value (PMV) and Predicted Percentage Dissatisfied (PPD) for ASHRAE Standard-55. The monitoring for this study was conducted for three hours in a three-time period; 6 A.M. - 9 A.M., 11 A.M. - 2 P.M., and 5 P.M. - 8 P.M. for students’ dormitory and residential. For monitoring at Pusat Islam, it was conducted in two slots; 11 A.M. - 2 P.M. and 6 P.M. - 10 P.M., and it was assessed during Ramadan when the Muslims perform the Teraweh prayer. Overall, the finding indicates that most of the time, the thermal comfort parameters at the three monitoring places did not comply with the (Industry Code of Practice on Indoor Air Quality) ICOP limit. Hence, it also influenced the PMV and PPD values which did not adhere to the ASHRAE Standard-55. This could be due to the poor design of the building where the plan itself does not promote cross-ventilation, the high outdoor temperature, and insufficient indoor air movement, thus causing discomfort to the occupants</p> 2022-09-12T00:00:00+00:00 Copyright (c) 2022 Ummi Zulaikha Ahmad Halili, Nor Azam Ramli, Nur Baitul Izati Rasli https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1220 THE USE OF SOLAR ENERGY IN THE KOREAN ECONOMY: A SOLUTION OR A PROBLEM? 2022-09-12T09:51:46+00:00 Choong Y. Lee cylee@pittstate.edu Derek McCarthy cylee@pittstate.edu <p>Fossil fuels power most of our society, yet they will not last forever. The search for alternative sources of energy have yielded only fleeting promises of change. Of the many types of sustainable energy, solar energy seems to be the most promising, however, solar energy is not without its flaws. This paper will explore the history and mechanics of solar energy, it will also feature a specific focus on the use of solar energy in the Korean economy. In order to ascertain whether or not solar energy may provide a sufficient alternative to fossil fuels for Korea’s primary source of energy, it will be necessary to conduct a cost/benefit analysis of solar energy. After conducting thorough research on the topic and based on the evidence to be provided in this paper, it is concluded that while solar energy has the potential to serve as a replacement for fossil fuels in Korean energy production, it is not yet ready to take on that role. It will be necessary to further develop the technology involved in the capture, storage, and use of solar energy, before it serves as a significant source of power.</p> 2022-09-12T00:00:00+00:00 Copyright (c) 2022 Choong Y. Lee, Derek McCarthy https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1221 NEW TYPE OF GLUEING OF REDOX FLOW STACKS 2022-09-15T08:32:07+00:00 Thorsten Hickmann t.hickmann@eisenhuth.de Prassad Venkatesan p.venkatesan@eisenhuth.de Martin Engelke m.engelke@eisenhuth.de Nyunt Wai wnyunt@ntu.edu.sg Falko Mahlendorf Falko.Mahlendorf@uni-duisburg-essen.de Aleksej Jasincuk Aleksej.Jasincuk@uni-duisburg-essen.de Ravendra Gundlapalli t.hickmann@eisenhuth.de Arjun Bhattarai arjun.bhattarai@vflowtech.com Ravi Ranjan ravi.ranjan@vflowtech.com Purna C. Ghimire purnacha001@e.ntu.edu.sg <p>For the energy transition to succeed, the growing amount of solar and wind power need to be stored for night-time or low-wind periods. Redox flow storage offers a good way of balancing out the fluctuations in renewable energies and is considered a promising energy storage system because it is potentially inexpensive and relatively easy to scale. However, the costs are still too high for this technology to be a resounding success. New manufacturing and joining technologies can help here. This will be demonstrated using the central element of the redox flow battery, the stack, as an example. Here, novel bonding ideas will be investigated and explained. The aim was to improve the contact between the gas diffusion fleece on the active side of the bipolar half plates and the current collector on the bipolar edge plates. A media and temperature-resistant adhesive was tested and tried out in different geometries.</p> 2022-09-15T00:00:00+00:00 Copyright (c) 2022 Thorsten Hickmann, Prassad Venkatesan, Martin Engelke, Nyunt Wai, Falko Mahlendorf, Aleksej Jasincuk, Ravendra Gundlapalli, Arjun Bhattarai, Ravi Ranjan, Purna C. Ghimire https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1182 VALIDATION OF Σ−YLIQ ATOMIZATION MODEL IN PRESSURE SWIRL ATOMIZER 2022-09-17T06:02:03+00:00 Sherry K. Amedorme smedorme@yahoo.com NR.N. Roselina roselina_roseley@uitm.edu.my <p>In many combustion and agricultural applications atomizers are used to increase the surface area of the liquid to ensure high rates of mixing and improve evaporation. The most common, simple, and reliable atomizer is the pressure swirl atomizer. This atomizer is said to have quality and effective atomization compared to others and induces swirling motion to the liquid and gives a hollow cone spray with air core as it emerges from the exit orifice. To enhance the understanding and prediction of the atomizing characteristics various atomization models are used and need to be investigated experimentally. This paper presents a validation of the Σ−Yliq atomization model of two-phase flow in a pressure swirl atomizer using commercial CFD star-cd code and laser-diffraction based drop measurements. To obtain the best results for the droplet mean diameter between the prediction and the experiment in terms of turbulence different k-e models were evaluated. The results show that the computational predictions of Sauter Mean Diameter (SMD) for the model have a good agreement with most of the experimental measurements in the radial positions when standard k-ɛ turbulence was used. However, more divergence was observed between the predictions and the experimental measurements when the RNG and Realizable k-ɛ turbulence models were used in the predictions. It was also observed that the model has good agreement with the mean droplet measurements on the spray centreline and radial axis with a percentage error of less than five percent.</p> 2022-09-17T00:00:00+00:00 Copyright (c) 2022 Sherry K. Amedorme, NR.N. Roselina https://www.granthaalayahpublication.org/ijetmr-ojms/ijetmr/article/view/1217 THE IMPACT OF INTEGRATING BUILDING INFORMATION MODELING (BIM) TECHNOLOGY AND RE-ENGINEERING PROCESS IN CONSTRUCTION PROJECTS 2022-09-26T06:09:41+00:00 Amirhassan Karimi Rad shahroozvakili@yahoo.com <p>In general, the recent findings obtained in line with current construction industry conditions confirm the idea of evaluating the design before its actual implementation. Accordingly, the design needs to be examined and reviewed from various aspects before the implementation of the design in construction projects in order to eliminate the possible obstacles, problems and errors of the system. Traditional methods and techniques included multiple reviews and double-checking of maps. This method is time consuming compared to new methods and technologies, and the percentage of errors is high. Therefore, traditional methods should be replaced by more effective methods. One of the most effective advanced technologies in the world that has been faced with a great welcome around the world is Building Information Modeling (BIM). This method has significant organizational benefits and causes a systematic change in the organization. In this paper, we will examine the status of building information modeling in construction projects and organizational maturity.</p> 2022-09-26T00:00:00+00:00 Copyright (c) 2022 Amirhassan Karimi Rad