Research Status and Prospect of Energy-saving Technology of LED Light Source in Plant Factory

Tian, Zhiwei; Ma, Wei; Yang, Qichang; Duan, Famin

doi:10.1109/sslchinaifws51786.2020.9308740

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…Chen et al [34] have found that elevated CO 2 concentrations in a PFAL positively influenced lettuce growth, light-use efficiency, and yield, demonstrating the potential of CO 2 enrichment in PFAL systems. Zhiwei T et al [35] investigated the effects of LED lighting arrangement, light source type, and switching intervals on plant growth in artificial light plant factories, aiming to achieve an optimal cultivation strategy. Y. Kikuchi et al [36] compared different plant factory models, including those with sunlight and artificial light, as well as traditional agricultural methods.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

Chen,

Dong,

Lei

et al. 2024

Sustainability

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Bio-based carbon capture and utilization emerges as a critical pathway to mitigate carbon dioxide (CO2) emissions from industrial activities. Within this context, plant factories become an innovative solution for biological carbon capture within industrial parks, fed with the substantial carbon emissions inherent in industrial exhaust gases to maximize their carbon sequestration capabilities. Among the various plant species suitable for such plant factories, Pennisetum giganteum becomes a candidate with the best potential, characterized by its high photosynthetic efficiency (rapid growth rate), perennial feature, and significant industrial value. This paper studies the feasibility of cultivating Pennisetum giganteum within an intelligent plant factory situated in an industrial park. An automated and intelligent plant factory was designed and established, in which multiple rounds of Pennisetum giganteum cultivations were performed, and life cycle assessment (LCA) was carried out to quantitatively evaluate its carbon capture capacity. The results show that the primary carbon emission in the plant factory arises from the lighting phase, constituting 67% of carbon emissions, followed by other processes (15%) and the infrastructure (10%). The absorption of CO2 during Pennisetum giganteum growth in the plant factory effectively mitigates carbon emissions from industrial exhaust gases. The production of 1 kg of dry Pennisetum giganteum leads to a net reduction in emissions by 0.35 kg CO2 equivalent. A plant factory with dimensions of 3 m × 6 m × 2.8 m can annually reduce carbon emissions by 174 kg, with the annual carbon sequestration per unit area increased by 56% compared to open-field cultivation. Furthermore, large-scale plant factories exhibit the potential to offset the carbon emissions of entire industrial parks. These findings confirm the viability of bio-based carbon capture using intelligent plant factories, highlighting its potential for carbon capture within industrial parks.

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Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

Chen,

Dong,

Lei

et al. 2024

Sustainability

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“…The studies in [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], and [29] demonstrate how dynamic lighting and optimization methods can help to increase the energy savings achievable by LED systems. In [17], the effects of dynamic regulation of supplemental lighting intensity on electricity consumption and fresh weight buildup were examined.…”

Section: Introductionmentioning

confidence: 99%

“…In [28], the LED light intensity was optimized over time for different electric energy and lettuce crop prices, but was restricted to simulations in a plant factory with no daylight harvesting. In [29], the authors presented existing energysaving methods using LEDs in plant factories. The plant canopy image was captured during different growth stages and appropriate LEDs above the plant were turned on to avoid light wastage.…”

Section: Introductionmentioning

confidence: 99%

An Energy-Efficient PAR-Based Horticultural Lighting System for Greenhouse Cultivation of Lettuce

Mohagheghi

Moallem

2023

IEEE Access

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This paper presents an intelligent horticulture lighting and monitoring system to achieve energy-efficient supplemental lighting while maintaining the light quality and intensity at desired levels in the photosynthesis spectrum. Energy-efficiency is achieved through delivering only the required net light intensity, consisting of sunlight and supplemental LED light, using an intelligent controller that does not depend on the lighting system model. To this end, an online neural-network learning control system is developed, comprised of low-cost light sensors for measuring the photosynthetic photon flux density (PPFD), dimmable LED light fixtures, cameras, and internet-of-things (IoT)-enabled firmware used for crop monitoring and performance evaluation. Experiments performed in a research greenhouse facility on the lettuce crop are presented which indicate that the system can deliver the desired Daily Light Integrals (DLIs) to the plants in the presence of changing daylight conditions. The proposed method can thus deliver the exact amount of light to a specific crop based on the required light recipes during different growth phases. The control performance is further compared with a conventional on-off time-scheduling method in terms of plant health, growth, and energy requirements. The experiments indicate that the proposed solution can reduce energy consumption per unit dry mass of lettuce by 28% when compared to existing time-scheduling methods.INDEX TERMS Daylight harvesting, energy-efficiency, horticultural lighting, Internet of Things, machine learning, neural networks, PAR measurement.

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Research Status and Prospect of Energy-saving Technology of LED Light Source in Plant Factory

Cited by 2 publications

References 18 publications

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

Life Cycle Assessment of Carbon Capture by an Intelligent Vertical Plant Factory within an Industrial Park

An Energy-Efficient PAR-Based Horticultural Lighting System for Greenhouse Cultivation of Lettuce

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