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SSuustsatianinabaibliltiyty2200222, ,1144, ,1100112255 1615ofof4139 0 64 128 192 256 320 384 448 512 576 10 8 6 4 2 0 10 8 6 4 2 0 10 8 6 4 2 00 Heating Electricity MWh MWh MWh Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec tive days per month. 64 128 192 256 320 384 448 Cooling 512 576 Figure 4. Heating, electricity, and cooling demands for the nine buildings together. Two representative Figure 4. Heating, electricity, and cooling demands for the nine buildings together. Two representa- days per month. Table 3. Sizes of components for each user in accordance with their peak demands [kW] (Adapted As stated in Section 2.1, the installed devices should have fixed and variable sizes, from [6]). depending on the model. The optimization process gives the number of fixed size ma- chines and the final dimension of the variable size ones (CCs, BOIs, TStors). Up to six devicesUosfetrhs e same kind can be installed at each user location, choosing from a look-up MGT ICE ABS HP MGT 200 200 ICE ABS 105 105 HP 7 200 200 105 105 Components table (reported in Table 3) containing the size values which are based on the user peak demands. 1 65 70 70 70 2 100 140 105 105 3 30 50 35 35 Table 3. Sizes of components for each user in accordance with their peak demands [kW] (Adapted from [6]). 4 5 6 Users7 8 19 30 50 35 35 30 50 35 35 30 50 35 35 Components 65 70 70 70 65 100 70 140 70 105 70105 100 140 105 105 2 T3he devices inve3s0tment costs are c5o0mprehensive of tr3a5nsportation, insta3ll5ation, com- missioning, etc., while maintenance costs have been considered proportional to the energy 4 30 50 35 35 produced by the devices. 5 30 50 35 35 Operating costs have been taken into account as proportional to the fuels and electric- 6 30 50 35 35 ity costs, while the investment costs’ amortization factors are based on the components lifespans and on the interest rate. The latter have been set up to 6% as a summation of the 8 65 70 70 70 real interest rate (4%) and of a risk rate (2%). DHCN lifespan duration has been chosen to 9 100 140 105 105 be 30 years long, 20 years for PVp and STp, 15 years for MGTs, ICEs, ABSs, and HPs, and, finally, 10 years for CCs and BOIs. The devices investment costs are comprehensive of transportation, installation, com- Currently, it is not possible to consider the energy market prices because they do missioning, etc., while maintenance costs have been considered proportional to the energy not reflect the common conditions that should be found in a normal dynamic before the produced by the devices. pandemic. Natural gas average market values of 0.06 €/kWh and 0.045 €/kWh have beenPDF Image | Optimal Sharing Electricity and Thermal Energy
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