In this study, we investigated the greenhouse facility at Miyagi of Japan where paprika is brought into cultivation. In this facility, the annual product yields are around 200 t/yr. The energy of electricity, kerosene and bunker A for lighting and a heater, and the input of CO2 gas as a growth agent are consumed. Here, since the energy data of time series was necessary, the boiler fuels of kerosene and/or bunker A were assumed to be in proportion to a difference between the minimum temperature for growing and the atmospheric one. Also, electricity was assumed to be consumed for 12 hours per a day.

Next, the consumption of CO2 gas as a growth agent would be analysed statistically. In a plant such as paprika, CO2 is consumed through photosynthesis. That is, this volume would be proportional to the duration of bright sunshine and an intensity of radiation. Fig.11 shows the statistically estimated CO2 consumption.

10,000

7.500 О О ся

5,000

з ’ о. с

Cd

О

2.500 0

0 1,000 2,000 3,000 4,000 5,000 6,000

Radiation*Duration of sunshine [Wh/m2 ]

Fig. 11. CO2 supply volume as a growth agent.

On the other hand, fertilizers of N, P2O5 and K2O only were considered, however another chemical inputs were ignored (Dowaki et al., 2010b).