Effect of Carbon Dioxide in an Optimized Design of the Plant Factory.

Based on the theory of plant factory, effect of carbon dioxide concentration on the profit is discussed. A proposed functional form of the growth rate has a multivariable dependence on the carbon dioxide concentration and the irradiance. By optimization of the proposed profit function, an improved operation condition can be selected for the maximum gain. The simulation results quantitatively indicates that the power consumption can be economized by increment of the carbon dioxide concentration.