Solar photovoltaic water pumping system using a new linear actuator

Andrada, P.; Castro, J.F.M. de

doi:10.24084/repqj05.321

Cited by 6 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The actuator is based on a previous design of a linear stepper reluctance actuator [8], with the same physical dimensions and of course without magnets and therefore with lower performances. In order to guarantee the displacement of the mover in the operating conditions a power converter, fed from the AC grid (single phase 230V, 50Hz) through a rectifier and a filter, must sequentially energize the phase windings of the actuator and reverse the sequence when it is required.…”

Section: Coilmentioning

confidence: 99%

New linear hybrid reluctance actuator

Andrada

Blanqué

Martínez

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

Self Cite

View full text Add to dashboard Cite

Section: Coilmentioning

confidence: 99%

New linear hybrid reluctance actuator

Andrada

Blanqué

Martínez

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

Self Cite

View full text Add to dashboard Cite

“…PV pumps are more economical, mainly due to the lower operation and maintenance costs compared to a diesel pump, and have less environmental impact than pumps powered by fossil fuels [36]. Furthermore, they can be easily installed at the site of use, without needing long pipelines, and they are considered to be highly reliable and durable [37].…”

Section: Substitution Of Fossil Fuelsmentioning

confidence: 99%

Improving the eco-efficiency of an agricultural water use system

Georgopoulou

Angelis-Dimakis

Arampatzis

et al. 2016

Desalination and Water Treatment

View full text Add to dashboard Cite

During the last two decades, the concept of eco-efficiency has been recognized as a suitable measure of progress towards a greener and more sustainable economy. The prefix "eco-" refers to both economic and ecological (environmental) performance. The need for improving eco-efficiency leads to the challenge of identifying the most promising alternative solutions which improve both the economic and the environmental performance of a given system ("eco-innovations"). Therefore, it becomes critical to develop eco-efficiency metrics for measuring environmental and economic performance of a system.The current paper presents a methodological framework that attempts to explore the use of ecoefficiency indicators in meso-level water use systems and through them to assess the impact of innovative technologies in such systems. The assessment of the environmental performance follows a life-cycle oriented approach using the midpoint impact categories while the economic performance is measured using the Total Value Added to the product due to water use. The ecoefficiency is expressed as the ratio of the economic performance indicator to the environmental performance indicator. The proposed approach is applied to a water use system of the agricultural sector, and more specifically to the fresh form tomato crop production in Phthiotida.The analysis reveals that the most important environmental impacts of the system are (i) greenhouse gas emissions due to energy consumption, (ii) release of toxic substances, due to the use of fertilizers and pesticides and (iii) depletion of freshwater resources. Three alternative interventions are examined for upgrading the value chain: (i) installation of sub-surface drip irrigation system, (ii) replacement of diesel pumps with solar pumps and (iii) use of organic fertilizers.Based on the findings, all of the proposed interventions have a positive impact on the overall ecoefficiency of the system. Sub-surface drip irrigation is the least favorable mainly due to its high investment cost. The use of solar pumps strongly influences climate change and photochemical ozone formation while the use of organic fertilizers has a more balanced impact on all indicators, with an emphasis on eutrophication. Thus, for a more holistic approach, regarding the ecoefficiency performance, a combined application of these three scenarios may be proposed.

show abstract