## 3 Results  
In this section, the results of the dynamic simulations performed for one year of operation will be presented according to different time bases: hourly and yearly bases. In particular, the results of the energy, economic, and environmental analysis will also be reported when the PS is compared with the RS. In addition, an economic analysis will be presented considering the purchasing costs before and after the energy crisis. Figure 7 shows the trends of temperature of greenhouse and outdoor air without the heating system. Note that heating of the greenhouse quickly occurs during the central hours of the day and that the greenhouse temperature follows the same trend of the ambient temperature. The heating of the greenhouse occurs because the rays of the sun enter through the glass of the greenhouse, due to the particularly high transmission coefficients of the glass itself. However, the infrared radiation emitted by the ground cannot be transmitted through some materials, such as glass, guaranteeing a higher temperature than the outdoor air temperature. Figure 6: The heat (space heating and DHW) and power demand of the user (irrigation and offices’ demand). A heated greenhouse allows for an increase in the yield of the crop so that some crops can be cultivated even in the winter months. Conversely, in the case of greenhouses with heating systems, the trend of the thermal flow rates represented in Figure 8 can be observed. The heating demand of the greenhouse by the heating system occurs only if the greenhouse temperature is lower than 20 \({}^{\circ}\)C, mainly when radiation is absent or for cold ambient temperatures. During these hours, the thermal losses by the construction materials are high. Due to the transmitted solar radiation, the thermal energy demand is null from 11 a.m. to 4 p.m. because the greenhouse temperature is higher than 20 \({}^{\circ}\)C, although this was a winter day. In the central hours of the day, although the pyrogasifier is switched off to carry out the ordinary maintenance of the unit, the integrations are null due to high solar production. Simultaneously, the greenhouse heat demand decreases. During the night, the pyrogasifier is unable to cover the demand. Therefore, the boiler is needed. This integration increases in the early morning hours when the boiler has to heat the greenhouse and provide heat to the user due to the low solar thermal production, see Figure 9.  
Figure 8: The transmitted solar radiation, thermal losses, and heating demand of the greenhouse. Figure 7: Temperature difference between the greenhouse and the outdoor air. Figures 10 and 11 report the powers of the electric loop without and with the pyrogasifer, respectively. As previously noted, the winter demand is clearly lower than the summer one due to the scarce use of irrigation pumps. PV production without a pyrogasifer guarantees very low integrations and particularly high excesses to the grid in the central hours. During the winter day, the production is almost higher than the demand. Without the pyrogasifer for a typical summer day, given the high consumption, excesses are null and important integrations were obtained. In this scenario, the plant appears to be undersized. Figure 11: The total power production of the PV panels and the pyrogasifer, the total power demand, and the power from/to the grid. Figure 9: Thermal flow rate: greenhouse heating demand and biomass auxiliary production and the pyrogasifer. The power production of the pyrogasifier Is not dependent on the weather conditions and it is constant and significant (Figure 11). Both of the systems, the pyrogasifier and the PV panels, are able to reduce the integrations of electricity from the grid; although, the higher power demand in the summer season is due to the irrigation pumps than in the winter season. Note that during the central hours of the day, the pyrogasifier is switched off to carry out the ordinary maintenance of the unit, and the electricity is only provided by the PV panels.