Document Type : Original Article
Authors
1
PhD Candidate, Department of Energy Conversion, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
2
Associate Professor, Department of Energy Conversion, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
3
Professor, Department of Energy Conversion, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
4
Associate Professor, Department of Renewable Energy Engineering, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran
Abstract
The rapid increase in global population, growing food demand, and the accelerated emission of greenhouse gases have intensified the need for sustainable agricultural systems. Modern greenhouse technologies are recognized as effective solutions to enhance crop productivity while minimizing energy consumption. Among these, the Energetic Dark Greenhouse (EDG) represents an advanced closed-loop cultivation system that operates entirely under artificial lighting with full environmental control. Such systems allow for precise regulation of temperature, humidity, and carbon dioxide (CO₂) levels, thereby enabling optimized photosynthetic efficiency. Since CO₂ is one of the primary substrates of photosynthesis, its concentration in the growing environment directly affects the rate of biomass accumulation. However, the relationship between CO₂ enrichment and plant productivity is non-linear, with saturation often occurring beyond optimal levels. The present study investigates the impact of three CO₂ concentrations (800, 1000, and 1200 ppm) on biomass growth and bioenergy efficiency of six short-term crops cultivated under controlled conditions in a EDG system.
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