Latest Articles

Performance Study of Two Circuits Lorenz – Mutzner Vapour Compression Cycle

IJTEE, volume-15 , Issue 2 (2019), PP 151 - 156

Published: 04 Oct 2019

DOI: 10.5383/ijtee.15.02.003

by Abdul Hadi N. Khalifa, Johain J. Faraj, Mahmood H. Khaleel from Engineering Technical College Baghdad, Middle Tech. University, Iraq Engineering Technical College Kirkuk, Southern Tech. University, Iraq

Abstract: The operational parameters for a modified Lorenz – Mutzner refrigeration cycle working with mixed refrigerant were studied experimentally. A Lorenz read more...

Keywords: Lorenz – Mutzner cycle, Dual evaporators, Refrigerant mixture, Refrigeration cycle

Study on Adsorption Refrigeration System Using Activated Carbon-Ethanol as Working Pair

IJTEE, volume-15 , Issue 2 (2019), PP 143 - 150

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.010

by Made Astinaa, Ren Sokha, Prihadi S. Darmanto from Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung 40132, Indonesia, Department of Industrial and Mechanical Engineering, Institute of Technology of Cambodia, Phnom Penh, Cambodia

Abstract: The adsorption refrigeration system is an alternative refrigeration system powered by thermal source so that it is possible to use waste heat and sola read more...

Keywords: Adsorption, Activated Carbon, Ethanol, Cooling Capacity, Coefficient of Performance.

Holism, Collective Intelligence, Climate Change and Sustainable Cities

IJTEE, volume-15 , Issue 2 (2019), PP 135 - 141

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.009

by Monika dos Santos from Department of Psychology: University of South Africa, PO Box 392, Pretoria 0004, South Africa, Department for Continuing Education: University of Oxford, Rewley House, 1 Wellington Square, Oxford, Oxfordshire OX12JA, United Kingdom

Abstract: As the Earth’s systems are under increasing unsustainable pressures, human security is clearly at stake. Cities are regarded to be increasingly impo read more...

Keywords: Climate Change, Cities, Holism, Adaptation, Mitigation, Collective Intelligence, Crowdsourcing, Technological Leapfrogging, Emerging Economies.

Performance Study of Photovoltaic-Water Electrolysis System for Hydrogen Production: A Case Study of Egypt

IJTEE, volume-15 , Issue 2 (2019), PP 129 - 133

Published: 27 Sep 2019

DOI: 10.5383/ijtee.13.02.008

by H.M. El-Sayed, Safie Elden Metwally, E.T. El Shenawy, A. Ramadan, N.M. Farag from Faculty of Science, Ain-Shams University, Cairo, Egypt, Renewable Energy Dept., Desert Research Center, Cairo, Egypt, Solar Energy Dept., National Research Center, Cairo, Egypt, Arab Academy of Science and Technology and Maritime, Cairo, Egypt

Abstract: Solar-hydrogen is expected to play an important role as an energy carrier of the future and is considered an ultimate solution for many energy and env read more...

Keywords: Hydrogen production, water electrolysis, solar energy

Yatta’s Medium Voltage Network Analysis and Enhancement

IJTEE, volume-15 , Issue 2 (2019), PP 123 - 128

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.007

by Sameer Khader, A.K. Daud, Alaa Abuqubaita, Aladdin Sultan from Palestine Polytechnic University, Power Electronics & Signals Processing Research Unit, Hebron, Palestine, Sultan Smart Technology Company, Jerusalem, Palestine

Abstract: This paper presents analysis and proposes solution scenarios for Yatta city (Y.C.) electrical network which experiences maximum demand exceeds the mai read more...

Keywords: Distribution Network, PV, ETAP, Electrical network, Power Transformers, Power Factor Correction.

Waste and Appendages Percentages of Stone Slabs Cutting Machine

IJTEE, volume-15 , Issue 2 (2019), PP 117 - 121

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.006

by Jawad Al-Haj from Palestinian Stone and Marble Center, Palestine Polytechnic University, PPU, 00972, Hebron, Palestine

Abstract: This paper aims at studying the stone wastage, appendages and defected stone percentages generated from cutting stone slabs into stone pieces with dif read more...

Keywords: Stone industry, stone slabs cutting machine, stone waste, appendages, defected stone.

Enhancement of Solar Water Disinfection using Nanotechnology

IJTEE, volume-15 , Issue 2 (2019), PP 111 - 116

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.005

by Mohammad Hamdan, Sonia Darabee from The University of Jordan, Department of Mechanical Engineering, Amman, Jordan

Abstract: The main aim of this work is to investigate the effect of adding Titanium and Aluminum Oxides nano-particles on solar disinfection process of contamin read more...

Keywords: Solar Water Disinfections, Nano-particles, contaminated water

Desalination by Freeze Crystallization: An Overview

IJTEE, volume-15 , Issue 2 (2019), PP 103 - 110

Published: 27 Sep 2019

DOI: 10.5383/ijtee.15.02.004

by Khadije El Kadi, Isam Janajreh from Mechanical and Materials Eng. Dept., Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates

Abstract: Desalination by freeze crystallization is a freezing-melting process in which water is crystallized to ice and separated from saline solution. This ar read more...

Keywords: freeze desalination, crystallization, crystal growth, binary phase diagram, CFD modelling

Analysis of Dissolved Oxygen Deficit in a Flowing Stream

IJTEE, volume-15 , Issue 2 (2019), PP 97 - 102

Published: 26 Sep 2019

DOI: 10.5383/ijtee.15.02.002

by Sunil J. Kulkarni from Department of Chemical Engineering, Datta Meghe College of Engineering, Airoli, Navi Mumbai, India, Pincode:400708

Abstract: The wastewater, domestic or industrial, is commonly disposed off in nearby water streams, rivers and sea. The wastewater, which has high biological ox read more...

Keywords: biological oxygen demand, oxygen deficit, critical deficit, critical time, saturation

Analysis of Alternative Cooling Options for a 1000 MWe Power Plant at Reduced Temperature Difference across Ultimate Heat Sink

IJTEE, volume-15 , Issue 2 (2019), PP 87 - 96

Published: 26 Sep 2019

DOI: 10.5383/ijtee.15.02.001

by Shahid Amin, Rashid Ali from Karachi Institute of Power Engineering (KINPOE), Karachi, Pakistan

Abstract: Process heated water from most existing nuclear and fossil fueled power plants is discharged directly to the ultimate heat sink by once through system read more...

Keywords: Heat sink, cooling tower, pond, evaporation, environment

Equivalent Lumped Criterion for Unsteady Heat Conduction in a Vertical Planar Wall with Natural Convection to a Nearby Quiescent Fluid

IJTEE, volume-15 , Issue 1 (2019), PP 81 - 86

Published: 12 Sep 2019

DOI: 10.5383/ijtee.15.01.010

by Antonio Campo from Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, Texas, TX 78249, USA

Abstract: Within the framework of the potent lumped model, unsteady heat conduction takes place in a solid body where the mean temperature varies with time. Con read more...

Keywords: vertical planar wall, natural convection, mean convective coefficient, nearby fluid, nonlinear lumped equation, lumped Biot number criterion

Equilibrium Sorption Isotherms for Removal of Heavy Metals Using Cement Kiln Dust

IJTEE, volume-15 , Issue 1 (2019), PP 71 - 79

Published: 12 Sep 2019

DOI: 10.5383/ijtee.15.01.009

by Mohamed El Zayat, Sherien Elagroudy, Salah El Haggar from Environmental Engineering, the American University in Cairo, P.O. Box 74, New Cairo 11835, Egypt Environmental Engineering, Ain Shams University, 1 El-Sarayat St., Abassia, Cairo 11517, Egypt

Abstract: The removal of lead, copper, and cadmium from aqueous solution using cement kiln dust (CKD) has been investigated under batch equilibrium technique se read more...

Keywords: Sorption Isotherms, Heavy Metals; Surface Titration, Cement Kiln Dust (CKD), Batch Equilibrium

Environmental Evaluation of Emissions from Thermal Power Plants in Jordan: Aqaba Thermal Power Plant Case Study

IJTEE, volume-15 , Issue 1 (2019), PP 63 - 70

Published: 12 Sep 2019

DOI: 10.5383/ijtee.15.01.008

by Mohammad Hamdan, Ruba M. Maály from The University of Jordan, Department of Mechanical Engineering, Amman, Jordan

Abstract: Jordan faces a wide variety of environmental problems, most of which are attributable to the inherent of air pollution roused in the last decade, and read more...

Keywords: Pollutants Activity Data, Emission factor, Pollutant Intensity

Reducing Organic Pollution of Wastewater from Milk Processing Industry by Adsorption on Marlstone Particles

IJTEE, volume-15 , Issue 1 (2019), PP 57 - 61

Published: 12 Sep 2019

DOI: 10.5383/ijtee.15.01.007

by Maher Al-Jabari, Hiba Dwiek, Nareman Zahdeh, Nadia Eqefan from Environmental Technology Engineering, Palestine Polytechnic University, Hebron, Palestine

Abstract: This paper presents a simple technique for controlling industrial pollution of wastewater with organic content. It summarizes results of an experiment read more...

Keywords: wastewater, chemical oxygen demand, adsorption, kinetic, equilibrium, marlstone

Design and Analysis of Solar Space Heating System in Iraq

IJTEE, volume-15 , Issue 1 (2019), PP 51 - 56

Published: 12 Sep 2019

DOI: 10.5383/ijtee.13.01.006

by Abdulrahman Th. Mohammad from Baqubah Technical Institute, Middle Technical University (MTU), Baghdad, Iraq

Abstract: This paper describes the design and analysis of space heating system with solar evacuated tube collector using a TRNSYS simulation within the weather read more...

Keywords: Solar collector, evacuated tube, TRNSYS

Optimization of Night Electric Vehicle Fleet Charging at Regional Level

IJTEE, volume-15 , Issue 1 (2019), PP 43 - 49

Published: 11 Sep 2019

DOI: 10.5383/ijtee.13.01.005

by Roberto Alvaro-Hermana, Jesús Fraile-Ardanuy, Julia Merino, Luk Knappen from ORKESTRA-Fundación Deusto, Universidad de Deusto, Av. de las Universidades, 24, 48007, Bilbao Information Processing and Telecommunications Center, ETSI Telecomunicación, Universidad Politécnica de Madrid. Avda. Complutense 30, 28040 Madrid, Spain TECNALIA. Parque Tecnológico de Bizkaia. c/ Geldo, Edificio 700. E-48160 Derio, Spain Institute voor Mobiliteit IMOB, Universiteit Hasselt, Campus Diepenbeek, BE 3590 Diepenbeek, Belgium

Abstract: Electrification of the road transportation sector is one of the ways to reduce the green-house gases (GHGs) emissions worldwide, but an increasing num read more...

Keywords: Electric Vehicles; Peer-to-Peer; Optimization

Experimental Investigation on Vapour Pressure of Desiccant for Air Conditioning Application

IJTEE, volume-15 , Issue 1 (2019), PP 31 - 41

Published: 11 Sep 2019

DOI: 10.5383/ijtee.15.01.004

by S. Bouzenada, L. Frainkin, A. Léonard from Laboratory of Energy and Environment, department of Architecture, University Constantine 3, Algeria Products Environment Processes Department of Chemical Engineering Sart Tilman, University of Liege, Belgium

Abstract: Liquid desiccant cooling system by solar energy is an energy-conservative and environment-friendly air-conditioning system. Recently, the rapid develo read more...

Keywords: Evaporative air conditioning system, Desiccant, Vapor pressure, Mass transfer coefficient

Connecting Small, Private Independent Hydro Power Plants to Increase the Overall Power Generating Efficiency

IJTEE, volume-15 , Issue 1 (2019), PP 19 - 29

Published: 11 Sep 2019

DOI: 10.5383/ijtee.15.01.003

by Markus Jäger, Markus M. Schwarz, Dagmar Auer, Barbara Platzer, Josef Küng from Institute for Application Oriented Knowledge Processing (FAW), Faculty of Engineering and Natural Sciences (TNF), Johannes Kepler University Linz (JKU), Altenberger Strasse 69, 4040 Linz, Austria, Energieinstitut, Johannes Kepler University Linz (JKU), Altenberger Strasse 69, 4040 Linz, Austria, nextsoft IT GmbH, Grubbachstrasse 42, 4644 Scharnstein, Austria

Abstract: In countries, where many small rivers exist, the geography can be used to implement environment-friendly small hydro power plants for the generation o read more...

Keywords: small hydro power plants, intelligent control system, cooperation, hydro power

Comparative Tests of Thermal Modeling Computer Program - Ecotect vs. TAS

IJTEE, volume-15 , Issue 1 (2019), PP 9 - 17

Published: 25 Feb 2019

DOI: 10.5383/ijtee.15.01.002

by Sanaa Y. Saleh from Department of Architecture, Faculty of Engineering, IUG, Gaza, Palestine, P.O. Box 108

Abstract: Various tests are conducted to investigate and compare how both programs (Ecotect and TAS) consider various parameters which affect buildings’ therm read more...

Keywords: Building Thermal Simulation, Computer Modeling, Ecotect, TAS, Thermal Mass, Ventilation.

Performance Prediction of Solar Thermal Water Pump using Artificial Neural Networks

IJTEE, volume-15 , Issue 1 (2019), PP 1 - 8

Published: 25 Feb 2019

DOI: 10.5383/ijtee.15.01.001

by Rohinikumar Bandaru, Chandrasekharan Muraleedharan from Department of Mechanical Engineering, NIT Calicut, India, 673601

Abstract: The solar thermal pump can be used for handling water where electrical power is not available and solar energy is in plenty. Performance analysis was read more...

Keywords: Solar thermal water pump, Experimental analysis, ANN model