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Energies 2022, 15, 6398 9 of 23 A 693 kWp photovoltaic power plant, located on the roof of the current above-ground car park, will provide a complementary source of electricity for the proposed RES instal- lation at ChT. To maximize the company’s use of RES, an energy storage facility will be built to optimize the RES generation system, energy management, and operation of the company’s stuff and customer electric vehicle charging stations. The energy storage will be recharged from the PV power plant and ORC CHP plant during off-peak periods, and the excess energy will be used for ChT’s own facilities. The expected effect of reducing the facility’s electricity demand from the region’s electricity grid is an average of 25% and varies from 19 to 27%, depending on the month. The environmental effect of the HGS system will be an increase in avoided emissions: CO2—1900 t/year, SO2—1691 kg/year, NOx—1567 kg/year, CO—683 kg/year. and dust—89 kg/year (calculated according to the KOBIZE 2019 methodology and indicators [32]). 3.1. Heat and Electricity Demand Based on the technology audit carried out for the existing ChT facility for the develop- ment of the HGS system, the heat streams within the facility were determined (Table 2). The heat power requirements of the existing Termy facility include: (1) the CO central heating system (70/50 ◦C radiators and 38/34 ◦C underfloor heating, with no delineation of heat streams to different parameters); (2) the pool technology (36/34 ◦C in most pools); (3) process needs, mechanical ventilation, and air curtain supply (70/50 ◦C and 30/20 ◦C, in the case of air curtains); (4) DHW preparation (70/50 ◦C and preheating 38/35 ◦C); (5) es- timated thermal power demand for de-icing (low-temperature waste heat < 30 ◦C); and (6) the water make-up in the pools, including B8 (via geothermal water bleed at 37.6 ◦C). The total thermal power demand of the facility adds up to a value of 11,698.9 kW, which is the peak power value. Table 2. Thermal power demand in the Chochołowskie Termy complex. Thermal Power [kW] (1) Central heating (2) Pool heating (3) Process needs (4) DHW (5) De-icing (6) B8 pool supplementation TOTAL Current New Facilities Total 329 56 585 8392 1067 9459 1686 1588 3274 480 300 780 555 - 555 256.9 - 256.9 11,698.9 3211 14,909.9 The planned expansion of the complex includes a leisure and recreation area. To cover the heat demand for the newly designed facilities, the following heat streams are distinguished (Table 2): (1) the CO central heating system, including 26 kW for the changing room and 230 kW for the rest of the building (radiators 50/35 ◦C and underfloor heating 40/30 ◦C, with no delineation of heat streams for different parameters), (2) the swimming pool technology (heated to 36/34 ◦C in most pools); (3) mechanical ventilation, including 36 kW for the changing room and 1552 kW for the rest of the building (60/40 ◦C); (4) DHW preparation (70/50 ◦C and preheating 38/35 ◦C). The total thermal power requirement for the new facility is, therefore, estimated to be 3211 kW. To cover the heat demand for the newly designed facilities, 3211 kW is needed. Elec- tricity generation will come from three sources: a 219.5 kW ORC plant generator turbine, a 46.5 kW hydro turbine, and a 693 kWp photovoltaic installation. The electricity demand of the existing facility will be partly covered by RES (Figure 4). Calculations of the demand and energy coverage from RES were made using 15-minute data from 2018–2019 and computer modeling of PV production, with shadow analysis for the location of the parking shelter installation. Simulations of the operation of the ORC unit with a water turbine were made on the basis of the actual heat demand for 2018.PDF Image | Combined Renewable Energy Resources System Geothermal
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