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Sustainability 2022, 14, 10125 tive analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenar- tive analysis for the two reference scenarios (ECS and SES) plus the results for six additional sc2e6noafr3-9 ios. ios. 500 Figure 12. Total installed capacities for MGTs, BOIs, CCs, and STp in the 9 users together. Sensitive Figure 12. Total installed capacities for MGTs, BOIs, CCs, and STp in the 9 users together. Sensitive ECS SES ICE (kW) ICE (kW) SE30a SE60a SE30b ABS (kW) HP (kW) ABS (kW) HP (kW) SE60b SE30c SE60c PV panels (kWp) PV panels (kWp) Figure 11. Total installed capacities for engines, ABSs, HPs, and PVp in the 9 users together. Sensi- Figure 11. Total installed capacities for engines, ABSs, HPs, and PVp in the 9 users together. Sensi- 500 400 400 300 300 200 200 100 100 0 0 ECS ECS SES SE30a SES SE30a SE60a SE60a SE30b SE30b CC (kW) CC (kW) SE60b SE30c SE60b SE30c STp users (m2) STp users (m2) SE60c SE60c MGT (kW) MGT (kW) BOI (kW) BOI (kW) Figure 12. Total installed capacities for MGTs, BOIs, CCs, and STp in the 9 users together. Sensitive analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenarios. analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenarios. analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenarios. 70,000 70,000 60,000 60,000 50,000 50,000 40,000 40,000 30,000 30,000 20,000 20,000 10,000 10,000 0 0 ECS SES ECS SES Tstor users (kWh) SE30b SE30b STp central (m2) SE60b SE30c SE60b SE30c Tsto central (kWh) SE60c SE60c SE30a SE60a SE30a SE60a Tstor users (kWh) STp central (m2) Tsto central (kWh) Figure 13. Total installed capacities for heat storage in the 9 users together, ST panels in the central Figure 13. Total installed capacities for heat storage in the 9 users together, ST panels in the central unit, and heat storage in the central unit. Sensitive analysis for the two reference scenarios (ECS and Figure 13. Total installed capacities for heat storage in the 9 users together, ST panels in the central unit, and heat storage in the central unit. Sensitive analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenarios. unit, and heat storage in the central unit. Sensitive analysis for the two reference scenarios (ECS and SES) plus the results for six additional scenarios. SES) plus the results for six additional scenarios. The reference scenarios (ECS and SES) installed around 1340 kWp of PVp each. How- ever, the scenarios SE30a and SE60a did not consider the installation of PVp in their optimal solution, as observed in Figure 11 also. These are the scenarios with alterations only in the price of electricity sold. Therefore, there is no advantage in putting PVp when such a low price for selling electricity is considered, since it is possible to obtain more electricity from the engines. Moreover, installing any additional component means higher costs in purchase, operation, and maintenance. On the contrary, the scenarios SE30b, SE60b, SE30c, and SE60c suggest a lot more PVp compared to the reference scenarios. The reason for this is the increase in the price required to buy gas and electricity. Now, the disadvantage is to install more CHP components and/or buy electricity from the grid. Even with the men- tioned costs related to any additional component, producing a percentage of the electricity demand from PVp is now more advantageous since the objective function (total EC annual cost) can be kept at the lower possible value, given the imposed gap. The installed capacity of ABSs did not present a substantial variation (Figure 11). Comparing the reference scenarios (ECS and SES) with the six sensitive scenarios, the ABS-installed capacity increased by approximately 9% on average, while its produced cooling increased by around 5% (Table 9). Bearing in mind the same comparison, the installed capacity of CCs increased, on average, by 23% (Figure 12), and its produced cooling increased by 44% (Table 9). This is consistent with the same explanation for HPs,PDF Image | Optimal Sharing Electricity and Thermal Energy
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