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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Figure 10. Heating COP of the integrated system (HR) compared to that of a standalone heat pump (HPs). 26 27 28 29 30 31 32 33 34 35 36 37 38 39 5.2. 40 Table 5. Annual electrical energy consumption for the selected configuration [MWh/year] Configuration B BHR B+HPs DX+ HPs C+HPs Climate 1 Climate2 448.5 393.7 458.4 429.8 459.3 432.2 496.4 480.5 487.0 475.6 Climate 3 329.5 451.7 472.2 539.4 538.9 Comparison between BHR and alternative systems As stated above, the performance of the integrated R744 system (BHR) is compared also to traditional stand- 41 42 43 44 these systems are intended to fully meet refrigeration, DHW and heating loads, with the support of heat 45 pumps. alone systems which totally (DX+HPs) or partially (C+HPs) make use of hydrofluorocarbon refrigerants. All 46 47 48 49 the BHR system at intermediate climate conditions. It can be noticed how efficient is heat recovery from 50 In Figure 11 the monthly energy consumption of the DX+ HPs and C+HPs configurations are compared to R744 booster system in wintertime, as the total energy consumption for the configuration with stand-alone 51 52 53 54 refrigeration system integrated by heat pumps (C+HPs) seems less promising as it is more efficient only in 55 refrigeration and heating systems (DX+HPs) exceeds up to 25% the BHR one. Furthermore, the cascade the summertime and leads to a total energy consumption slightly higher than DX+HPs. The influence of 56 57 58 59 summertime, where the C+HS system is better performing even if the heat pump contribution is required to 60 61 62 63 64 65 outdoor conditions on the performance of the R744 system is clear looking at the comparison in the supply DHW at 60 °C.PDF Image | R744 BOOSTER INTEGRATED SYSTEM
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