Performance Analysis of Greenhouses with Integrated Photovoltaic Modules

Carlini, Maurizio; Villarini, Mauro; Esposto, Stefano; Bernardi, Milena

doi:10.1007/978-3-642-12165-4_17

Cited by 18 publications

(10 citation statements)

References 6 publications

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“…In India, Ganguly et al [158] used a PV-covered greenhouse to grow ornamental plants with good results, showing the profitability of this method. In another study, Carlini et al [159] found that roof-mounted PV panels provided optimal cooling and heating for greenhouse-grown tomatoes. In Japan, Cossu et al [154] presented an algorithm to measure the global radiation within the greenhouse, thus enabling growers to choose agronomically compatible crops in PV-shaded greenhouses.…”

Section: Passive Cooling Technologies: Shading and Reflectionmentioning

confidence: 99%

Protected Cropping in Warm Climates: A Review of Humidity Control and Cooling Methods

2019

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The projected increase of the world’s population, coupled with the shrinking area of arable land required to meet future food demands, is building pressure on Earth’s finite agricultural resources. As an alternative to conventional farming methods, crops can be grown in protected environments, such as traditional greenhouses or the more modern plant factories. These are usually more productive and use resources more efficiently than conventional farming and are now receiving much attention—especially in urban and peri-urban areas. Traditionally, protected cropping has been predominantly practised in temperate climates, but interest is rapidly rising in hot, arid areas and humid, tropical regions. However, maintaining suitable climatic conditions inside protected cropping structures in warm climates—where warm is defined as equivalent to climatic conditions that require cooling—is challenging and requires different approaches from those used in temperate conditions. In this paper, we review the benefits of protected cropping in warm climates, as well as the technologies available for maintaining a controlled growing environment in these regions. In addition to providing a summary of active cooling methods, this study summarises photovoltaic (PV)-based shading methods used for passive cooling of greenhouses. Additionally, we also summarise the current humidity-control techniques used in the protected cropping industry and identify future research opportunities in this area. The review includes a list of optimum growing conditions for a range of crop species suited to protected cropping in warm climates.

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Section: Passive Cooling Technologies: Shading and Reflectionmentioning

confidence: 99%

Protected Cropping in Warm Climates: A Review of Humidity Control and Cooling Methods

2019

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“…Many industrial and private efforts have been implemented to reduce the anthropic impact on nature, trying to move from a petroleum-based fuel dependency to a new virtuous approach, also based on biomass exploitation. Possible examples are the use of fuel cells [4], biomass gasification system aimed at hydrogen production [5], combined gas conditioning and cleaning in biomass gasification [6], waste vegetable oil transesterification [7], hydrogen production from biomass [8], biofuel [9], biogas production from poultry manure and cheese whey wastewater [10], greenhouses with photovoltaic modules [11], oriented to the green economy and to the sustainable development of society [12,13]. The solar energy source should be considered as a possible solution to face the fossil-fuel exploitation to produce thermal and electric energy [14,15], using for example photovoltaic systems [16,17] with also energy storage [18] or solar collectors [19].…”

Section: Introductionmentioning

confidence: 99%

Modelling and Numerical Simulation for an Innovative Compound Solar Concentrator: Thermal Analysis by FEM Approach

et al. 2020

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The work presents a heat transfer analysis carried out with the use of COMSOL Multiphysics software applied to a new solar concentrator, defined as the Compound Parabolic Concentrator (CPC) system. The experimental measures have been conducted for a truncated CPC prototype system with a half-acceptance angle of 60°, parabola coefficient of 4 m−1 and four solar cells in both covered and uncovered configurations. These data are used to validate the numerical scenario, to be able to use the simulations for different future systems and works. The second challenge has been to change the reflector geometry, the half-acceptance angle (60° ÷ 75°) and the parabola coefficient (3 m−1 ÷ 6 m−1) to enhance the concentration of sun rays on the solar cells. The results show that the discrepancy between experimental data and COMSOL Multiphysics (CM) have led to validate the scenarios considering the average temperature on the solar cells. These scenarios are used for the parametric analysis, observing that the optimal geometry for the higher power and efficiency of the whole system is reached with a lower half-acceptance angle and parabola coefficient.

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“…Energy systems efficiency has been growing during the last years [2,3]. Referring to European scenario, Directive 2009/28/EC-also known as and Energy Roadmap 2050 set climate and energy goals to be achieved by 2020: gases emissions reduction and energy efficiency improvement are some of the requirements.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Fluid Dynamic Analysis within a Batch Micro-Reactor for Biodiesel Production from Waste Vegetable Oil

2017

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Biofuels represent an alternative solution to petroleum-based fuels. In particular, biodiesel is very interesting, especially if it is produced from waste vegetable oil. Biodiesel can be used in diesel engines. The aim of this work is to implement a 2D numerical analysis in Comsol Multiphysics in order to verify an uniform temperature field within a non-isothermal batch mixed micro-reactor. An immersion heater system has been studied as a suitable solution to increase the temperature of WVO (Waste Vegetable Oil) before the start of the transesterification reaction. Thus, the efficiency of the immersion heating system has been investigated. The results show that the temperature field is not uniform within the fluid domain, because of the convective flux with the external environment. These conditions could lead to a low overall conversion rate.

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Performance Analysis of Greenhouses with Integrated Photovoltaic Modules

Cited by 18 publications

References 6 publications

Protected Cropping in Warm Climates: A Review of Humidity Control and Cooling Methods

Protected Cropping in Warm Climates: A Review of Humidity Control and Cooling Methods

Modelling and Numerical Simulation for an Innovative Compound Solar Concentrator: Thermal Analysis by FEM Approach

Thermal and Fluid Dynamic Analysis within a Batch Micro-Reactor for Biodiesel Production from Waste Vegetable Oil

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