Measuring the effect of forced irrigation on the front surface of PV panels for warm tropical conditions

Osma-Pinto, Germán; Ordóñez-Plata, Gabriel

doi:10.1016/j.egyr.2019.04.010

Cited by 19 publications

(7 citation statements)

References 28 publications

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“…This city has a warm climate and is 960 masl. Table 1 presents general climate data of this tropical city [19,20]. the median income multi-family building category from the Metropolitan Area of Bucaramanga (MAB), considering the Colombian context and aimed to support the establishment of an ELSB.…”

Section: Selection Of the Representative Buildingsmentioning

confidence: 99%

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Improvement Proposal of Bottom-Up Approach for the Energy Characterization of Buildings in the Tropical Climate

2021

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The energy characterization of buildings can be done by bottom-up methods such as energy simulation models (samples or archetypes). A sample consists of the selection of real buildings and an archetype is a theoretical building that represents them. Nevertheless, both approaches have shortcomings for the creation of energy models. This work proposes to improve the sampling approach from the validation of input data, and calibration of models by individual adjustment processes. The studied category corresponds to multi-family buildings of median incomes from the Metropolitan Area of Bucaramanga (Colombia). This study presents the energy model of five existing buildings and an archetype, calibration results, energy characterization, and comparative analysis between both approaches. The sampling approach indicates that housing units and general services demand an average of 76.9% and 23.1% of consumed energy, respectively. The average energy consumption by housing units is 22.38 kWh/m2·year caused by appliances (85.3%), lighting (11.2%), and air conditioning (3.5%). The archetype presents similar results for the energy consumption of housing units (kWh/m2·year), but notable differences concerning a specific behavior of inner spaces, being the sampling approach more accurate to characterize to a building category.

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Section: Selection Of the Representative Buildingsmentioning

confidence: 99%

“…This city has a warm climate and is 960 masl. Table 1 presents general climate data of this tropical city [19,20]. A selection process allowed conforming a group of five residential buildings from a total of fifteen potential existing buildings.…”

Section: Selection Of the Representative Buildingsmentioning

confidence: 99%

Improvement Proposal of Bottom-Up Approach for the Energy Characterization of Buildings in the Tropical Climate

2021

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“…Extensive research has been carried out to resolve the design, modeling, simulation, feasibility, viability, economics, application and control of off-grid/standalone PV electrification systems [24,25]. Research was performed extensively on optimum design, modeling, simulation, and feasibility study of standalone solar PV systems either ground mounted or rooftop for electrification [26][27][28][29][30][31][32][33].…”

Section: Literature Reviewmentioning

confidence: 99%

Design, Simulation, and Economic Optimization of an Off-Grid Photovoltaic System for Rural Electrification

et al. 2019

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Access to clean and affordable energy in rural African regions can contribute greatly to social development. Hence, this article proposes the design, simulation, and optimization of a stand-alone photovoltaic system (SAPV) to provide non-polluting electrical energy based on a renewable source for a rural house located in Tazouta, Morocco. Real monthly electrical demands and hourly climatic conditions were utilized. An initial design process indicated that, with a 1080 W p total capacity of PV modules and 670 Ah of battery storage, the proposed SAPV system was able to meet a considerable part of the dwelling load with an average solar fraction of about 79.1%. The rest of the energy demand was ensured by a diesel generator (DG). Also, a life cycle analysis of the PV system revealed that the life cycle cost is 10,195.56 USD and the unit electricity cost is 0.57 USD/kWh for an initial investment of 4858.68 USD. Thereafter, an optimum design based on Homer Pro software was carried out indicating that lower PV capacity can decrease the unit energy cost to 0.356 USD/kWh while reducing the solar fraction to 54.9%.Energies 2019, 12, 4735 2 of 16 society [1]. Access to electricity has not only been identified as an essential element for socio-economic development, but also contributes towards poverty reduction in society [2]. However, electricity generation and its supply are not distributed equally in the world, especially in rural regions [3][4][5] that also suffer from the low quality of the power supply distribution services [6,7]. Yet, most of African countries, for instance, are still underdeveloped both in terms of infrastructure and power network, despite large, ongoing renewable energy projects in the region. In fact, there are about 620 million people in this continent that have no access to electricity, which is equivalent to two-thirds of Africa's population [8].Of the 315 million people in rural Africa who are expected to have access to electricity by 2040, only 30% of them will be connected to national networks. The others will be connected to off-grid or mini-grid power systems [9]. Kofi Annan, chairman of the Africa Progress Panel and former UN secretary general urged African governments and their partners to do their utmost to combat the enormous energy deficit in Africa. This joint appeal was launched on Monday, 13 March 2017, at the ADB headquarters in Abidjan, Ivory Coast on the occasion of the launch of the Africa Progress Panel report entitled "Light, Energy, Action: Electrifying Africa", which calls for adopting all existing solutions-network and off-grid systems-to illuminate Africa and power it [10].It is no great surprise as this continent has an abundant potential of solar, hydro, wind, and geothermal sources of energy and contains significant quantities of natural gas. Some countries even have coal deposits. The great challenge for Africa is to exploit and manage these resources and make them contribute to its economic development and ease for the inhabitants. Morocco, which belongs to the north...

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“…Similarly, Osma-Pinto and Ordóñez-Plata [45] developed and tested a spray cooling system which cools the module front side by means of nozzles design for irrigation applications. The test facility is installed on the green roof of the Universidad Industrial de Santander, Bucaramanga (Colombia).…”

Section: Cooling System Technologiesmentioning

confidence: 99%

Spraying Cooling System for PV Modules: Experimental Measurements for Temperature Trends Assessment and System Design Feasibility

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Vanna

et al. 2021

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The hallmark of the PhotoVoltaic (PV) electricity generation is its sustainability, while its main weakness is the low conversion efficiency. A drawback to which is added the PV cell sensitivity to temperature variations: the higher the cell operating temperature, the lower the efficiency. Considering that in-operation modules reach a conversion efficiency in the range of 10 to 15%, there is an urgent need to control their temperature to enhance the electricity generation. To this purpose, the authors developed a PV spraying cooling system able to drastically knockdown modules operating temperature. Using experimental measurements acquired through a dedicated test rig and after an in-depth literature review, the authors analyze the nozzles number, geometry, and position, as well as water and module’s temperature distribution, limestones formation, degradation of front glass properties, water consumption, and module power production with and without the cooling system. The experimental campaign shows that a cooling system equipped with three nozzles with a spraying angle of 90°, powered by water at 1.5 bar and managed in ON/OFF mode (30 s on to 180 s off), can improve the module’s efficiency from 11.18% to 13.27% thanks to a temperature reduction of up to 24 °C. Despite the improvement in electricity production (from 178.88 W to 212.31 W per single module), at the time of writing, the equipment and installation costs as well as the plant arrangement complexity make the investment not eligible for financing also in the case of a 1 MW floating PV facilities.

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Measuring the effect of forced irrigation on the front surface of PV panels for warm tropical conditions

Cited by 19 publications

References 28 publications

Improvement Proposal of Bottom-Up Approach for the Energy Characterization of Buildings in the Tropical Climate

Improvement Proposal of Bottom-Up Approach for the Energy Characterization of Buildings in the Tropical Climate

Design, Simulation, and Economic Optimization of an Off-Grid Photovoltaic System for Rural Electrification

Spraying Cooling System for PV Modules: Experimental Measurements for Temperature Trends Assessment and System Design Feasibility

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