Autonomous greenhouse microclimate through hydroponic design and refurbished thermal energy by phase change material

Baddadi, Sara; Bouadila, Salwa; Ghorbel, Wahid; Guizani, Amenallah

doi:10.1016/j.jclepro.2018.11.192

Cited by 65 publications

(17 citation statements)

References 41 publications

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“…Hydroponics can be more energy‐intensive than other greenhouse production systems. Efforts to decrease the energy requirements include new designs for hydroponic greenhouses (Baddadi et al ., 2019), which allow for better energy conservation than conventional greenhouses. Compared to conventional solar heating, the newly designed two packed beds of latent storage energy improved the indoor greenhouse environment, especially during harsh and nocturnal periods.…”

Section: The Future Of Hydroponicsmentioning

confidence: 99%

Hydroponics with wastewater: a review of trends and opportunities

Cifuentes‐Torres

Mendoza‐Espinosa

Correa‐Reyes

et al. 2020

Water & Environment J

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Hydroponics is a method of crop production that has been successfully used for the growth of vegetables and flowers. It uses a nutrient solution and generally controlled environmental conditions which makes it more energy intensive, yet more productive than conventional agriculture. Hydroponic systems can be used as a treatment process for partially treated wastewater or reclaimed water (RW) before its release to the environment, as plants have the ability to uptake nutrients, toxic metals and emerging contaminants. The present review has the aim to look into the advantages of hydroponics and evaluate the success of using RW as a nutrient solution. It was found that many examples exist of successful experiments; however, full‐scale examples are still limited. With the recent interest in vertical farming and the production of legal cannabis, interest in hydroponics has increased and the use of RW as a nutrient solution may finally be economically viable.

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Section: The Future Of Hydroponicsmentioning

confidence: 99%

Hydroponics with wastewater: a review of trends and opportunities

Cifuentes‐Torres

Mendoza‐Espinosa

Correa‐Reyes

et al. 2020

Water & Environment J

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“…The key design parameters that affect the thermal behavior and the heating/cooling energy need of a greenhouse are: the cladding material characteristics, shape, orientation and air change rate [1]. Greenhouse food production shows a high ability to ensure food security [2]- [3]. Greenhouse cultivation occupies a particular place in the agricultural field and has been widely used by farmers in many parts of the world [4]- [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Greenhouse Design Parameters on the Heating and Cooling Requirement of Greenhouses in Moroccan Climatic Conditions

et al. 2021

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Protected crop production is rapidly expanding in the Mediterranean Basin, and particularly in Morocco. Increased local and overseas demand for these products led to a rapid development in greenhouse usage encouraged by government policies. The aim of this study is to investigate key design parameters that affect the thermal behavior and the heating/cooling energy need of a greenhouse situated in Agadir (Morocco). The parameters include the cladding material characteristics, shape, orientation, and air change rate. The greenhouse is modeled by a developed thermal model using TRNSYS software. The model considers the presence of the plants inside the greenhouse by adding the heat and humidity gain into the heat and water balance of the greenhouse using an evapotranspiration sub-model. The effect of evapotranspiration on the greenhouse thermal behavior was also examined in this study. A validation of the current TRNSYS simulation and evapotranspiration model was made using previous studies from the literature, and the comparison showed fair agreement. The relative error of the annually heating demand obtained by this model is 1.66%, and the evapotranspiration model used in this study shows relative deviation less than 6.5%. The results of this study indicate that the East-West greenhouse orientation is the optimum orientation as it can reduce the annual cost of air-conditioning of the greenhouse by 9.28% compared to North-South orientation. Quonset shape is the optimum greenhouse shape in Morocco as it can save 14.44% of annual cost of airconditioning instead of the Even-span shape.

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“…Water replaced soil as a medium to supply nutrients to the plant through its roots. The nutrient is essential to increase the quality of plant growth [4,5]. Temperature, pH water, light, and humidity are also necessary to optimize the plants healthy.…”

Section: Introductionmentioning

confidence: 99%

Automated monitoring and controlling pH levels for hydroponics cultivation technique

Saaid

Yassin

Tahir

2020

IJEECS

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<span>A hydroponics plant can grow healthily with sufficient nutrient, temperature, light, humidity as well as pH level that is indeed vital in ensuring the plants will absorb maximum nutrient elements required. This paper presents automated monitoring and controlling pH levels for the hydroponic cultivation technique. In this study, automated monitoring and controlling of pH levels are developed specifically for the hydroponic cultivation technique. There are three main methods that involved in the development of the system namely hardware, programming and functionality test. Firstly, users need to set the maximum and minimum pH levels as required by the plant. Then, the pH sensor will monitor the real-time pH level of the water. A syringe pump that contains a pH up solution (alkaline) and a pH down solution (acid) will drip the solutions to neutralize the water content if the water pH level is not within the stated ranges as set by the user. Results showed that the automated monitoring and controlling pH levels were successfully developed and functionality was tested and confirmed as desired. The syringe pumps responded perfectly upon changes of the water pH value based on the validation done that showed 100% accuracy of the syringe pump responds. </span>

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Autonomous greenhouse microclimate through hydroponic design and refurbished thermal energy by phase change material

Cited by 65 publications

References 41 publications

Hydroponics with wastewater: a review of trends and opportunities

Hydroponics with wastewater: a review of trends and opportunities

Effect of Greenhouse Design Parameters on the Heating and Cooling Requirement of Greenhouses in Moroccan Climatic Conditions

Automated monitoring and controlling pH levels for hydroponics cultivation technique

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