JournalTOCs

About Help News

Renewable Energy and Sustainable Development
Number of Followers: 3

This is an Open Access Journal

Open Access journal
ISSN (Print) 2356-8518 - ISSN (Online) 2356-8569
Published by Academy Publishing Center, Egypt

[4 journals]

Non-uniform dust distribution effect on photovoltaic panel performance
- Authors: Saman S. Jaafar, Hiwa A. Maarof, Renas T. Salh, Hoshang Sahib, Yousif H. Azeez
  Pages: 01 - 10
  Abstract: A novel experimental method for power efficiency loss is presented in this paper. It is used to quantitatively determine the impact of dust deposition on the PV power generation panel. To determine the selection range of unknown parameters in the experiment process, a photovoltaic panel with five collected dust samples (Toner (C), Soil, Cement (CaO, SiO4), Gypsum (Ca2SO4.2H2O), and Sand (AL2O3, SiO4)) is designed. According to experimental results, the extinction coefficient for the five pollutants are recorded. Eventually, the impact of dusts on the results is proofed by repeating in two continuous days of same conditions. The results show that the proposed process has a high effect on the reduction of output power (62% to 96%), decrease of irradiance (34% to 93%) and increase of output power due to increase of tilt angle as a doubling of power except toner. The experimental and calculated results are in agreement. The results show that non-uniform distribution of dust deposit pollutants on the photovoltaic panel significantly reduces the power output.
  Received: 09 January 2023 Accepted: 06 February 2023Published: 16 February 2023
  PubDate: 2023-02-16
  DOI: 10.21622/resd.2023.09.1.001
  Issue No: Vol. 9, No. 1 (2023)
Power density improvement due to Rotor Flux screens in an SRM with a
higher number of Rotor Poles than Stator Poles
- Authors: Ali A. Abdelaziz, Khaled H. Ahmed, Ahmed M. Massoud, Barry W. Williams
  Pages: 11 - 20
  Abstract: This paper investigates the effect of rotor flux screens (conducting screens) on the performance of switched reluctance motors with a higher number of rotor poles than stator poles. A high number of rotor poles decreases the torque ripple, which is desirable for electric vehicle applications. The conducting screens fill the rotor interpolar gaps forming a cylindrical rotor hence alleviating the windage losses, especially effective at high speeds. The effect of conducting screen thickness and material electrical conductivity on current rise time, developed torque, and output power is studied. A procedure for calculating the effective value of unaligned inductance for screened motors using the flux tube method is presented. Finite element analysis results for different screen cases confirm the effectiveness of conducting screens in improving the torque, hence power capability, of switched reluctance motors. Received: 11 January 2023 Accepted: 03 May 2023 Published: 30 May 2023
  PubDate: 2023-05-30
  DOI: 10.21622/resd.2023.09.1.011
  Issue No: Vol. 9, No. 1 (2023)
Drivers for, and barriers to solar energy use by manufacturing Micro Small
and Medium Enterprises (MSMEs) in Tanzania
- Authors: Felichesmi S. Lyakurwa
  Pages: 21 - 30
  Abstract: Choice of solar energy by manufacturing Micro, Small and Medium Enterprises (MSME’s) has been associated with manufacturing sustainability. In this study, the Structural Equation Modeling (SEM) technique was employed to establish drivers for, and barriers to solar energy use by manufacturing MSME’s in selected districts in Morogoro region. The SEM results revealed three main drivers for manufacturing MSME’s use of solar energy for different purposes like manufacturing MSME’s intention to use solar energy, risk perception on solar energy use, and self-effectiveness perception. Also, the results indicated that there are several factors that hinder manufacturing MSME’s use of solar energy for different operations including the environmental concern (i.e., staff/employers’ concern about air pollution resulted from energy use, and staff/employers’ concern about climate change); solar energy awareness (i.e., experience in previous use of solar energy, and understanding of different types of solar PV which can be used at industry level), and lastly, solar energy generation cost (i.e., the generation of solar energy may cause additional cost, and solar energy requires high initial investment cost). Hence, the results of this study can be used by energy policymaking instruments to make informed decisions for renewable energy investment in the country’s manufacturing sector for manufacturing sustainability.
  Received: 04 April 2023 Accepted: 06 June 2023 Published: 20 June 2023
  PubDate: 2023-06-20
  DOI: 10.21622/resd.2023.09.1.021
  Issue No: Vol. 9, No. 1 (2023)

JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762

Your IP address: 35.175.191.46

Home (Search)
API
About JournalTOCs
News (blog, publications)