Figure 1.

Figure 2.

Figure 3.

Figure 4.

Classification of influence factors on the environmental- energy efficiency and term values as linguistic variables
| Influence factors | Designation and name of the linguistic variable | Terms for evaluating linguistic variables | |
|---|---|---|---|
| Environme ntal, X 1 | The effect of reducing carbon monoxide emissions in exergy units, x 11 | Low (L) | |
| The effect of preventing environmental pollution in exergy units, x 12 | Low (L) | ||
| The effect of using biofuels in exergy units, x 13 | Low (L) | ||
| The effect of the use of organic fertilizers in exergy units, x 14 | Low (L) | ||
| Influence factors | Designation and name of the linguistic variable | Terms for evaluating linguistic variables | |
| Exergy effect from receiving additional thermal energy from traditional sources, x 21 | Low (L) | ||
| Energy, X 2 | Exergy effect of obtaining additional solar energy, x 22 | Low (L) | |
| Exergy effect of receiving additional thermal energy from the heat pump, x 23 | Low (L) | ||
| Fermentation temperature regimes, X 3 | Exergy effect at: | Thermophilic mode, x 31 Mesophilic mode, x 32 Cryophilic mode, x 33 | Low (L) |