Performance of a directly-coupled PV water pumping system

Mokeddem, A.; Midoun, A.; Kadri, Dahane; Hiadsi, S.; Raja, Iftikhar A.

doi:10.1016/j.enconman.2011.04.024

Cited by 138 publications

(44 citation statements)

References 23 publications

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“…In Reference [18], it is indicated that most farmers in Latin American countries have old and inefficient irrigation systems, resulting in an overconsumption of energy, which accounts for approximately 50% of the annual operational cost. Similar situations are observed around the world: Reference [19] reported pump efficiencies ranging between 20% and 30% in existing irrigation systems in Tunisia; Reference [20] reported a motor-pump performance of 30%. An inefficient irrigation system requires an unnecessarily oversized solar PV system.…”

Section: Introductionmentioning

confidence: 48%

A Cost-Effective Methodology for Sizing Solar PV Systems for Existing Irrigation Facilities in Chile

et al. 2018

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Abstract:In the last five years, the Chilean Ministries of Agriculture and Energy developed a national strategy to incorporate renewable energies into various economic sectors. Since 2013, more than 1500 off-grid solar photovoltaic (PV) systems, with power ranging from 1 kW to 3 kW, were installed to drive existing irrigation systems in small and medium-sized farms for the exportation of fresh fruit. A net billing regulation was also implemented in 2014. This study shows a cost-effective methodology for the sizing of solar PV systems for existing irrigation facilities in Chile, in an effort to improve the competitiveness of the fresh-fruit industry. The same methodology may also be implemented in other Latin American countries. The article presents the analysis of four projects (two in the Atacama Region, and two in the Maule Region). The baseline situation of the four units was studied, as well as the energy-efficient actions that may be applied, in addition to the recommended characteristics of the selected PV system to drive the irrigation systems of small fresh-fruit farms. Off-grid and on-grid solar PV systems were analyzed, including some particularities of the Chilean regulations. The required water demand of the irrigation systems and their corresponding pressure heads were also determined. The electricity demand of the system was calculated, and the PV system was designed for an optimal irrigation system. Additionally, an economical assessment was made for two years. In the first year, the cost effectiveness of energy-efficient actions was evaluated for the irrigation system, and it was found that they had paybacks of approximately two years. In the second year, the implementation of a PV system in each demonstrative unit was evaluated. The on-grid solar PV system performed better than the off-grid system, with evaluated paybacks of approximately 12 years. Finally, some recommendations for a well-designed on-grid solar PV system were made on the basis of it lasting over 25 years, with an adequate operation and maintenance plan.

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Section: Introductionmentioning

confidence: 48%

A Cost-Effective Methodology for Sizing Solar PV Systems for Existing Irrigation Facilities in Chile

et al. 2018

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“…When the friction losses are neglected, the electromechanical torque of motor is equal to the torque required to pump a certain quantity of water (ie, torque of pump). The torque of pump can be represented as a function of the rotational speed of the pump:

T_{P} = K_{P} * ω^{2},

where ω is the rotational speed of the DC motor (rad/s), K P is a constant computed based on the shaft and impeller dimensions of the pump, as described below:

K_{P} = 2 italicπρ b_{1} R_{1}^{2} tan ((),, β_{1}) ((),, R_{2}^{2} - \frac{R_{1}^{2} b_{1} tan ((),, β_{1})}{b_{2} tan ((),, β_{2})}),

where ρ is the water density (kg/m 3 ), R 1 and R 2 are the impeller radius at impeller inlet and outlet, respectively (mm), b 1 and b 2 are the heights of impeller blade at the impeller inlet and outlet, respectively (mm), and β 1 and β 2 are the inclination angles of the impeller blade at the impeller inlet and outlet, respectively (degree). The rotational speed can be calculated as

ω = \sqrt{\frac{K_{T}}{K_{p}} I} .

…”

Section: Photovoltaic Pumping System Modelmentioning

confidence: 99%

“…Many studies have focused on the performance of PVPS . Such studies lead to the conclusion that PVPSs are more feasible than diesel‐generated systems.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic study and optimal sizing of a stand-alone photovoltaic water pumping system

Muhsen

Ghazali

Khatib

et al. 2017

Int Trans Electr Energ Syst

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Summary Solar energy is effectively used to power stand‐alone photovoltaic pumping systems (PVPSs) for irrigation and drinking purposes in remote areas. However, random vicissitudes and the unpredictability of the amount of solar energy that can be harnessed lead to difficulties in designing PVPS. Thus, an optimal sizing approach is essential to ensure satisfactory performance. In this paper, a numerical iterative sizing approach based on technical and economic objectives is developed to optimize the configuraion of PVPS. The loss of load probability criteria is considered as the technical objective, while the life cycle cost criteria is considered as the economic objective. The proposed pumping system provides a daily water for a small village in Kuala Lumpur, Malaysia. The proposed sizing approach is used to test all the possible configurations of a wide range of photovoltaic (PV) array sizes to specify the PV array configurations that realize the reliability condition. The optimal size of the storage tank and the optimal number of PV modules connected in series and parallel are specified to keep up a balance between the loss of load probability, life cycle cost, and excess water volume of PVPS. The performance of the system is tested on the basis of the proposed optimal configuration and hourly meteorological data for 1 year. The results show that the proposed system is available throughout most of the year.

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“…Assuming only 5% friction head losses should be allowed in the system the total dynamic head has been determined using eq. 3 [18,19]   .…”

Section: Pumping Headmentioning

confidence: 99%

The Potential of Solar Energy for Sustainable Water Resource Development and Averting National Social Burden in Rural Areas of Zambia

Mwanza

Kaoma

Bowa

et al. 2017

PEN

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Performance of a directly-coupled PV water pumping system

Cited by 138 publications

References 23 publications

A Cost-Effective Methodology for Sizing Solar PV Systems for Existing Irrigation Facilities in Chile

A Cost-Effective Methodology for Sizing Solar PV Systems for Existing Irrigation Facilities in Chile

Techno-economic study and optimal sizing of a stand-alone photovoltaic water pumping system

The Potential of Solar Energy for Sustainable Water Resource Development and Averting National Social Burden in Rural Areas of Zambia

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