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초록·키워드
As the demand for stable agricultural production increases under ongoing climate change, the need for efficient environmental control in glass greenhouses has grown alongside the expansion of smart farms. In winter, glass greenhouses are highly prone to elevated humidity and condensation due to their airtight structure, which can suppress crop growth and increase disease incidence. Ventilation during cold periods further increases heating loads, making humidity control particularly challenging. To address these issues, this study comprehensively evaluates crop productivity and energy consumption under various dehumidification strategies for glass greenhouses. Using EnergyPlus simulations, thirteen scenarios were developed in which forced ventilation(exhaust), heat recovery ventilation systems, and stand-alone dehumidifiers operated under four different dehumidification setpoint conditions. For each scenario, indoor temperature and humidity conditions, energy consumption, and a crop-based quality index were calculated. Comparison of production efficiency, defined as the quality index divided by energy use, showed that the heat recovery ventilation system at 75% setpoint scenario achieved the highest productivity index, while forced ventilation resulted in the lowest energy consumption. The forced ventilation at 85% setpoint scenario exhibited the highest production efficiency. This study offers decision-making guidelines for selecting dehumidification strategies and operational settings based on cultivation goals, and emphasizes the need for further validation using field measurements and expanded control methods.
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