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Siyal, Shahid Hussain
Publications (5 of 5) Show all publications
Siyal, S. H., Mentis, D. & Howells, M. I. (2019). Economic analysis of standalone wind-powered hydrogen refueling stations for road transport at selected sites in Sweden (vol 40, pg 9855, 2015). International journal of hydrogen energy, 44(23), 12288-12290
Open this publication in new window or tab >>Economic analysis of standalone wind-powered hydrogen refueling stations for road transport at selected sites in Sweden (vol 40, pg 9855, 2015)
2019 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 44, no 23, p. 12288-12290Article in journal (Refereed) Published
Abstract [en]

The measurement units of yearly wind electricity and hydrogen production in the following sections of the previously published paper as titled above are now changed from (MWh/year and kTon/year) to (GWh/year and tons/year). These changes apply to all the measuring units in text and related tables of the following sections. All the results of this paper are still valid and unchanged. 

Place, publisher, year, edition, pages
Elsevier, 2019
National Category
Energy Systems
Identifiers
urn:nbn:se:kth:diva-252981 (URN)10.1016/j.ijhydene.2019.03.036 (DOI)000468710100083 ()2-s2.0-85063603502 (Scopus ID)
Note

Corrigendum

QC 20190814

Available from: 2019-08-14 Created: 2019-08-14 Last updated: 2019-08-14Bibliographically approved
Korkovelos, A., Mentis, D., Siyal, S. H., Arderne, C., Rogner, H.-H., Bazilian, M., . . . De Roo, A. (2018). A geospatial assessment of small-scale hydropower potential in sub-saharan Africa. Energies, 11(11), Article ID 3100.
Open this publication in new window or tab >>A geospatial assessment of small-scale hydropower potential in sub-saharan Africa
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2018 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 11, no 11, article id 3100Article in journal (Refereed) Published
Abstract [en]

Sub-Saharan Africa has been at the epicenter of an ongoing global dialogue around the issue of energy poverty. More than half of the world's population without access to modern energy services lives there. It also happens to be a sub-continent with plentiful renewable energy resource potential. Hydropower is one of them, and to a large extent it remains untapped. This study focuses on the technical assessment of small-scale hydropower (0.01-10 MW) in Sub-Saharan Africa. The underlying methodology was based on open source geospatial datasets, whose combination allowed a consistent evaluation of 712,615 km of river network spanning over 44 countries. Environmental, topological, and social constraints were included in the form of constraints in the optimization algorithm. The results are presented on a country and power pool basis.

Place, publisher, year, edition, pages
MDPI AG, 2018
Keywords
Electrification, Geographic information systems, Hydropower, Sub-Saharan Africa, Economic and social effects, Energy poverties, Hydropower potential, Optimization algorithms, Social constraints, Technical assessment, Hydroelectric power
National Category
Medical Engineering
Identifiers
urn:nbn:se:kth:diva-247086 (URN)10.3390/en11113100 (DOI)000451814000238 ()2-s2.0-85057780833 (Scopus ID)
Note

QC 20190503

Available from: 2019-05-03 Created: 2019-05-03 Last updated: 2019-05-03Bibliographically approved
Ali, R., Noora, A., Fareed, M. M., Faraz, Z.-U. -. & Siyal, S. H. (2018). Computational analysis of PT/CT contact behavior for a heavy water reactor at high temperature and pressure. In: Proceedings of 2018 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018: . Paper presented at 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018, National Centre for Physics, Islamabad, Pakistan, 9 January 2018 through 13 January 2018 (pp. 645-650). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Computational analysis of PT/CT contact behavior for a heavy water reactor at high temperature and pressure
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2018 (English)In: Proceedings of 2018 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018, Institute of Electrical and Electronics Engineers (IEEE), 2018, p. 645-650Conference paper, Published paper (Refereed)
Abstract [en]

A computational model has been developed for a heavy water reactor (HWR) reactor to analyze the temperature distribution of the moderator and pressure tube and to determine the thermal stress analysis of pressure tube (PT) using the non linear elastic model for thermal expansion. For an IAEA ICSP problem, the experimental set up and model were developed by the Fuel Channel High Temperature Heat Transfer (FCHTHT) laboratory in Canada. In case of LOCA or primary heat transfer failure, PT experiences a significant heat flux that results in ballooning of PT. Following the PT deformation, PT/CT contact may occur and thus there is spike in heat flux at calandria tube (CT) resulting in the local dryout of CT. The study was divided into two parts, pre-contact phase and contact phase. The analysis is made by using the COMSOL multiphysics software. The results reveal the effect of buoyancy and support the validation of experimental set up where the graphite heater is offset below the centre to account for the buoyancy effects. The PT was deformed at higher temperature and came in contact at 74.4 seconds.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
Keywords
Ballooning, Contact phase, Heat transfer, LOCA
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-228647 (URN)10.1109/IBCAST.2018.8312292 (DOI)000432299800099 ()2-s2.0-85047264273 (Scopus ID)9781538635643 (ISBN)
Conference
15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018, National Centre for Physics, Islamabad, Pakistan, 9 January 2018 through 13 January 2018
Note

QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2018-07-23Bibliographically approved
Mentis, D., Howells, M. I., Rogner, H.-H., Korkovelos, A., Arderne, C., Zepeda, E., . . . Scholtz, E. (2017). Lighting the World: the first application of an open source, spatial electrification tool (OnSSET) on Sub-Saharan Africa. Environmental Research Letters, 12(8), Article ID 085003.
Open this publication in new window or tab >>Lighting the World: the first application of an open source, spatial electrification tool (OnSSET) on Sub-Saharan Africa
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2017 (English)In: Environmental Research Letters, ISSN 1748-9326, E-ISSN 1748-9326, Vol. 12, no 8, article id 085003Article in journal (Refereed) Published
Abstract [en]

In September 2015, the United Nations General Assembly adopted Agenda 2030, which comprises a set of 17 Sustainable Development Goals (SDGs) defined by 169 targets. 'Ensuring access to affordable, reliable, sustainable and modern energy for all by 2030' is the seventh goal (SDG7). While access to energy refers to more than electricity, the latter is the central focus of this work. According to the World Bank's 2015 Global Tracking Framework, roughly 15% of the world's population (or 1.1 billion people) lack access to electricity, and many more rely on poor quality electricity services. The majority of those without access (87%) reside in rural areas. This paper presents results of a geographic information systems approach coupled with open access data. We present least-cost electrification strategies on a country-by-country basis for Sub-Saharan Africa. The electrification options include grid extension, mini-grid and stand-alone systems for rural, peri-urban, and urban contexts across the economy. At low levels of electricity demand there is a strong penetration of standalone technologies. However, higher electricity demand levels move the favourable electrification option from stand-alone systems to mini grid and to grid extensions.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2017
Keywords
sustainable development goals, energy access modelling, geospatial data
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-206824 (URN)10.1088/1748-9326/aa7b29 (DOI)000406479300001 ()2-s2.0-85029154197 (Scopus ID)
Funder
J. Gust. Richert stiftelseSwedish Research Council
Note

QC 20170607

Available from: 2017-05-08 Created: 2017-05-08 Last updated: 2018-02-27Bibliographically approved
Siyal, S. H., Mentis, D. & Howells, M. I. (2016). Mapping key economic indicators of onshore wind energy in Sweden by using a geospatial methodology. Energy Conversion and Management, 128, 211-226
Open this publication in new window or tab >>Mapping key economic indicators of onshore wind energy in Sweden by using a geospatial methodology
2016 (English)In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 128, p. 211-226Article in journal (Refereed) Published
Abstract [en]

Due to modern advancements in renewable energy systems and increasing prices of fossil fuels wind energy is getting a lot of attention all over the world. In this regard, Sweden also fixed motivated targets to get energy supply from local renewable energy resources. So, local wind power could help the country in achieving the targets. In this study, economic indicators of wind energy were spatially estimated for Sweden by using ArcGIS tool. In order to do this, as input data one-year high resolution modeled annual average wind data was processed by means of Rayleigh distribution, wind turbine power curve, land use constraints, technical constraints and economic parameters. Based on the input data, it was concluded that Sweden possesses economically feasible wind energy resource. The results of the study indicate that southern and central regions could produce economically viable wind electricity in all aspects as compared to the northern region of the country. Lastly, it was recommended to speed up wind energy penetration in Sweden, communal awareness and acceptance regarding the resource should be increased to avoid possible misunderstanding. Additionally, the capability of the national electric grid should be enhanced to take up the large scale unpredictable wind energy resource.

Place, publisher, year, edition, pages
Elsevier, 2016
Keywords
Economic, GIS, Indicators, Spatial, Wind electricity, Economics, Energy resources, Fossil fuels, Geographic information systems, Indicators (instruments), Input output programs, Land use, Renewable energy resources, Wind effects, Wind power, Wind turbines, Economic indicators, Economic parameters, Economically viable, Rayleigh distributions, Renewable energy systems, Technical constraints, Economic analysis
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-195204 (URN)10.1016/j.enconman.2016.09.055 (DOI)000388047800019 ()2-s2.0-84989227706 (Scopus ID)
Note

QC 20161202

Available from: 2016-12-02 Created: 2016-11-02 Last updated: 2019-03-15Bibliographically approved
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