Modeling examines how economizer use impacts CO2 levels, energy costs, and lettuce yield in indoor farms, suggesting cost-effective practices.
• Effects of economizer use on plant factory yield, energy use, & CO2 use were modeled. • Revenue was compared against select production costs for several designs & locations. • Higher latitude locations allow more economizer hours and can save dehumidifying cost. • Economizers preventing CO2 enrichment can cause revenue loss >12x energy costs saved. • Indoor farms using economizers should allow CO2 enrichment for better unit efficiency.
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Eaton et al. (2026) studied this question.
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