Proceedings of Engineering and Technology Innovation <p><strong><em>Proceedings of Engineering and Technology Innovation</em></strong> (PETI), ISSN 2518-833X (Online), ISSN 2413-7146 (Print), is an international, multidiscipline, open access, peer-reviewed scholarly journal, and dedicated to providing a fast publishing platform for researchers, developers, technical managers, and educators in the field of technology innovation. The officially abbreviated title is <em><strong>Proc. eng. technol. innov.</strong></em> It is published by Taiwan Association of Engineering and Technology Innovation. Currently, there is<em><strong> no any charge</strong></em> for submission and publication of the papers submitted to PETI. You are invited to submit your works to the journal.</p> <p>PETI is indexed by:</p> <p><img src="/public/site/images/allen/DOAJ-small2.png">&nbsp;<img src="" alt="">&nbsp;&nbsp; <img src="" alt="">&nbsp;&nbsp; <img src="" width="74" height="35">&nbsp;&nbsp; <img src="" alt="">&nbsp;&nbsp;<img src="" alt="">&nbsp;&nbsp;<img src=""> <img src="" alt=""> &nbsp;<img src="/public/site/images/allen/Publons-22.5_1.png"> &nbsp; <img src="/public/site/images/allen/crossref3.png" width="92" height="42"></p> <p>Under evaluation of SCI(E), Scopus, Compendix(EI), INSPEC, etc.</p> <p>&nbsp;</p> Taiwan Association of Engineering and Technology Innovation en-US Proceedings of Engineering and Technology Innovation 2413-7146 <hr> <p style="line-height: 150%;"><span style="font-family: Times New Roman;">Submission of a manuscript implies: that the work described has not been published before that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication. Authors can retain copyright of their article with no restrictions. Also, author can post the final, peer-reviewed manuscript version (postprint) to any repository or website.</span></p> <p>&nbsp;</p> <p style="line-height: 150%;"><img alt="" src="/public/site/images/ijeti/cc.png"><br><span style="font-family: Times New Roman, Times, serif;">Since Oct. 01, 2015, PETI will publish new articles with Creative Commons Attribution Non-Commercial License, under </span><span style="font-family: Times New Roman, Times, serif;"><a href="">The Creative Commons Attribution Non-Commercial 4.0 International (CC BY-NC 4.0) License</a>.<br>The Creative Commons Attribution Non-Commercial (CC-BY-NC) License permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes</span></p> Manufacture and Design an Apparatus for Measuring the Thermal Resistance of Building Materials <p>A good thermal design of buildings plays a key role in reducing the thermal loads of heating and air conditioning systems and thus reducing energy consumption. This study develops a steady-state apparatus for measuring the thermal resistance of building materials by using an absolute technique. The apparatus is designed to accommodate the full and actual size of the tested samples of building materials used in the Syrian market to ease testing. Therefore, suitable samples do not have to be built for the apparatus; the thermal resistance is measured for many samples, and the results are compared with the thermal insulation code for buildings in the Syrian Arab Republic. The results show that the difference between the resistance values obtained from the experiments and the Syrian thermal insulation code is due to the materials used in the local markets and their non-compliance with the code. These materials need testing and quality control during the manufacturing process.</p> Ammar Saliby Béla Kovács Copyright (c) 2022 Ammar Saliby, Béla Kovács 2022-07-15 2022-07-15 22 1 9 10.46604/peti.2022.9500 Investigation on Tribological Characteristics of Al 7075 MMNC: Behavior of Micro- and Nano-Sized Composites <p>This study investigates the mechanical properties and the wear behavior of Al 7075/Al<sub>2</sub>O<sub>3</sub>/SiCNP composites. The hybrid composites are manufactured using the stir casting technique. In this work, the Al 7075 alloy is reinforced with five different weight fractions of Al<sub>2</sub>O<sub>3</sub> and a constant SiCNp, with an average particle size of 50 nm. The aluminum metal matrix composites are examined through surface morphology and X-ray diffraction (XRD) patterns to identify the material behavior. The material characteristics and the wear behavior of the metal composites are examined using a pin-on-disk test. Wear measurements are performed by varying loads, sliding speeds, and sliding distances. The results reveal that the composites reinforced with 4% of Al<sub>2</sub>O<sub>3</sub> particulates exhibit superior properties. The wear rate and the coefficient of friction (COF) decrease with the increase in the reinforcement content.</p> Sonagiri Suresh Baridu Vinod Sangireddy Sunil Kumar Reddy Uthirapathi Elaiyarasan Copyright (c) 2022 Sonagiri Suresh, Baridu Vinod, Sangireddy Sunil Kumar Reddy, Uthirapathi Elaiyarasan 2022-07-26 2022-07-26 22 10 19 10.46604/peti.2022.8943 Porous Maize Stalk Cellulose Fiber-Reinforced Geopolymer Composites for Heat Insulation at the Bottom Side of a Local Electric Stove <p>The objective of this work is to develop porous maize stalk cellulose fiber-reinforced geopolymer composites for heat insulation on the bottom side of an electric stove using the solid impregnation method. Heat loss measurement is conducted using an infrared thermometer. Moreover, the temperature effect on the composites is investigated. The maize stalk cellulose fibers are very essential to anticipate the cracking phenomenon generated by high temperatures. The degradation of the fibers causes the formation of small cavities in the matrix, and thus leads to high temperatures. The experimental result shows that it takes 22 minutes to boil water using the proposed electric stove, whereas it takes 29 minutes using the existing local electric stove. By using the proposed electric stove to boil water, 113,793,148.104 KWh of energy per year at the national level can be saved.</p> Addisu Workiye Eyassu Woldesenbet Copyright (c) 2022 Addisu Workiye, Eyassu Woldesenbet 2022-05-13 2022-05-13 22 20 29 10.46604/peti.2022.8589 Experimental and Analytical Study of Silica Particles on Self-Healing Concrete <p>This study aims to investigate the properties of green concrete made with ground granulated blast-furnace slag (GGBS), Robo sand (RS), and coconut shell (CS). GGBS is the mineral admixture used to replace cement. Nano-silica particles (NSPs) and CS are used as coarse aggregates, and RS is the fine aggregate used to replace river sand. The workability, mechanical properties, and durability properties of green concrete are investigated and compared with those of conventional concrete (CC). Test results show that the cement replaced with 30% GGBS and 3% NSPs exhibits superior strength. The compressive and splitting tensile strengths are increased by 24.03% and 42.32% after 28 days of curing, respectively. The workability is improved by 12.22% (slump) and 13.25% (compaction factor) after 28 days of curing. The sorptivity of HM<sub>3</sub> (3.26%) is lower than that of CC due to the uniform distribution between particles. Microstructure evolution is carried out to identify concrete mix behavior.</p> Kamasani Chandrasekhar Reddy Krishnaiah gari Hemanth Kumar Copyright (c) 2022 Kamasani Chandrasekhar Reddy, Krishnaiah gari Hemanth Kumar 2022-07-15 2022-07-15 22 30 39 10.46604/peti.2022.9477 Increasing the Power Output of a PV Solar System by Using a Cooling-Reflector Assembly <p>There are various methods that can be employed to increase the lifespan and power output of photovoltaic (PV) systems. This study aims to increase the power output of a grid-connected PV system by using a water-cooling unit and solar reflectors. The PV modules of the current PV system are divided into two clusters. The first cluster, which is considered an improved cluster, has a solar reflector-cooling unit added to it, while the second cluster is used as a reference. The results show that the maximum efficiency and performance ratio values of the improved and reference PV modules at 10:30 AM are 14.7% &amp; 13.7% and 97.5% &amp; 91.2%, respectively. The maximum electrical power values of the improved and reference PV modules at 12:00 PM are 2.55 W and 1.69 W, respectively. The maximum gain value for electrical power is 43%.</p> Naseer Kareem Kasim Hazim Hamoud Hussain Alaa Najem Abed Copyright (c) 2022 Naseer Kareem Kasim, Hazim Hamoud Hussain, Alaa Najem Abed 2022-07-14 2022-07-14 22 40 49 10.46604/peti.2022.9976 Effect of Gear Materials on the Surface Contact Strength of Spur Gears <p>In gear applications, the initiation of cracks at or near the contact surfaces of gear mates occurs mostly due to the surface contact mode of gear failure. This study aims to investigate the influence of gear materials on the contact strength of spur gears. In this study, four different gear materials are selected and the contact stress on spur gear mates is analyzed. Hertz’s contact stress equation and ANSYS 16 are used for the theoretical analysis and finite element (FE) method, respectively. The results of Hertz’s equation are compared with the results of ANSYS 16. The results show that the contact stress on spur gear mates varies when different gear materials are used in both methods. This indicates that the surface contact strength of spur gears is greatly influenced by the type of gear materials.</p> Eniyew Eskezia Misganaw Abebaw Copyright (c) 2022 Eniyew Eskezia, Misganaw Abebaw 2022-05-04 2022-05-04 22 50 59 10.46604/peti.2022.8695