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Applied Sciences
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Greenhouse Integrated Photovoltaic System
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Greenhouse Integrated Photovoltaic System

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (15 August 2019) | Viewed by 8834

Special Issue Editor

Prof. Dr. Ángel-Jesús Callejón-Ferre

E-Mail Website1 Website2
Guest Editor
Department of Engineering, University of Almería, Research Center CIMEDES, Agrifood Campus of International Excellence (CeiA3), 04120 La Cañada de San Urbano, Almería, Spain
Interests: renewable energy in greenhouses; occupational health and safety in agriculture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Consumers demand sustainable agricultural products that are respectful of the environment and of the workers who obtain them.

Many crops (ornamental, vegetables and fruit, mainly) are developed in different types of greenhouses depending on the country where they are located. This fact requires the use of renewable energies (hydro, wind, geothermal, biomass and solar).

The integration of photovoltaic systems in greenhouse crops is a reality. Covers, irrigation systems, automata, mechanisms, machinery, ventilation, cooling, heating, etc., need energy for their operation.

The adaptation of different photovoltaic systems to each type of crop, type of greenhouse and location, requires precise studies to guarantee its technical and economic viability.

Prof. Dr. Ángel Jesús Callejón-Ferre
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Greenhouse crops and solar panels
  • Solar photovoltaic greenhouses
  • Photovoltaic irrigation systems
  • Solar radiation distribution in photovoltaic greenhouses
  • Greenhouse roof for energy
  • Photovoltaic systems in agriculture
  • Other photovoltaic systems

Published Papers (3 papers)

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Research

15 pages, 2285 KiB  
Article
Thermal Evaluation of a Hybrid Dryer with Solar and Geothermal Energy for Agroindustry Application
by Emérita Delgado-Plaza, Juan Peralta-Jaramillo, Miguel Quilambaqui, Olga Gonzalez, José Reinoso-Tigre, Anthony Arevalo, Mirari Arancibia, Mayra Paucar and Borja Velázquez-Martí
Appl. Sci. 2019, 9(19), 4079; https://doi.org/10.3390/app9194079 - 30 Sep 2019
Cited by 12 | Viewed by 3321
Abstract
The process of drying at the agroindustry level is considered the most important stage for the storage and conservation of food, but an inadequate sizing of the systems can generate an excessive consumption of fuel and energy. In the case of the agricultural [...] Read more.
The process of drying at the agroindustry level is considered the most important stage for the storage and conservation of food, but an inadequate sizing of the systems can generate an excessive consumption of fuel and energy. In the case of the agricultural sector, especially in small and medium producers in Ecuador, they tend to dry cereals outdoors, spreading the product over black plastics, asphalt floors, or cements called “tendal”. This process depends on the weather conditions of the area and can take between one or four days of drying, tending to damage the product by fungi. On the other hand, certain producers build dryers empirically, using as the main fuel gas for domestic use, diesel, or firewood. Among the problems presented for these types of dryers are heat losses in the drying chamber as it is not thermally insolated, a lack of temperature control (above 60 °C) and drying speed, excessive fuel use, and 10% burned product, which are essential to control to obtain a quality product and savings in the energy consumption of the dryer. With regard to the problem raised above, the design and construction of a hybrid dryer that worked with 80% of thermal solar and low enthalpy aerogeothermal energy and 20% with electric power was conducted to optimize the drying process and ensure a quality dry product. The work proposes the dimensioning of each component of the dryer. As a result, it was found that the efficiency of the equipment was around 60%, reaching a maximum operating temperature of 52 °C, with a stabilization time of the system in the first hour within 40 min. It should be noted that the design of the prototype is easy to adapt and replicate. Full article
(This article belongs to the Special Issue Greenhouse Integrated Photovoltaic System)
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12 pages, 1896 KiB  
Article
Autonomous Installations for Monitoring the “Protector Prosperina“ Forest
by Emérita Delgado-Plaza, Gabriel Intriago, Juan Peralta-Jaramillo, Paolo Piedrahita and Borja Velázquez-Martí
Appl. Sci. 2019, 9(19), 4034; https://doi.org/10.3390/app9194034 - 26 Sep 2019
Cited by 4 | Viewed by 2519
Abstract
Within the city of Guayaquil, the Protector Prosperina Forest is located, which protects an area rich in biodiversity. To prevent visitors from damaging the forest, the Polytechnic community has established a tourism intervention plan based on sustainability criteria, generating responsible and ecological tourism. [...] Read more.
Within the city of Guayaquil, the Protector Prosperina Forest is located, which protects an area rich in biodiversity. To prevent visitors from damaging the forest, the Polytechnic community has established a tourism intervention plan based on sustainability criteria, generating responsible and ecological tourism. Therefore, the project aims to improvement of spaces, signage, and construction of energy systems using renewable energy for lighting and loading of electronic devices, will also, serve as logistical technical support for the operation of the sensor network and information acquisition for the monitoring of diversity forest through audio and video, especially for the protection of those species that are in danger of extinction. In this initiative to raise awareness and promote the protection of the forest and the sustainable use of its resources, autonomous photovoltaic stations have been installed in 5 strategic locations for the development of the aforementioned activities. Full article
(This article belongs to the Special Issue Greenhouse Integrated Photovoltaic System)
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13 pages, 7825 KiB  
Article
Electrical and Thermal Behaviour of Crystalline Photovoltaic Solar Modules in Shading Conditions
by Germán Álvarez-Tey, José Antonio Clavijo-Blanco, Álvaro Gil-García, Rafael Jiménez-Castañeda and Carmen García-López
Appl. Sci. 2019, 9(15), 3038; https://doi.org/10.3390/app9153038 - 27 Jul 2019
Cited by 7 | Viewed by 2394
Abstract
The shadow effect caused by nearby objects or the lack of cleaning significantly affects the performance of photovoltaics (PV) installations. This article analyses the bypass diode electrical behaviour and the thermal response of a PV crystalline module under shading or soiling conditions. PV [...] Read more.
The shadow effect caused by nearby objects or the lack of cleaning significantly affects the performance of photovoltaics (PV) installations. This article analyses the bypass diode electrical behaviour and the thermal response of a PV crystalline module under shading or soiling conditions. PV cells of different substrings were covered progressively to simulate the effect of shading or soiling while a programmable electronic DC load was connected to a PV module to set an operating voltage. Three different tests were made to different PV crystalline technology. The paper characterizes in real conditions the I–V curve, bypass diode current, and front and back side PV cell temperature with contact sensor and infrared (IR) thermography, respectively. The results showed that the operation voltage established in the PV module defines the electrical bypass diode current and thermal response under normal operating conditions, shading or soiling. To show the bypass diode behaviour in such conditions, I–V curves were obtained, pointing out the value of the current that flows through bypass diodes in the whole voltage range. Full article
(This article belongs to the Special Issue Greenhouse Integrated Photovoltaic System)
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