1. LHC cycle power consumption FCC I&O meeting 23 rd September 2015 D Bozzini & G. Peon EDMS xxxxx

2. Outline D. Bozzini 1.Power consumption June-July-August 2.Summer peak power consumption vs. ambient temperature 3.Draft of power consumption reference table G. Peon 1.LHC cooling and ventilation power (MW)

3. Power consumption June-July-August

4. Summer peak power consumption vs. ambient temperature Hottest day of summer 2015 7 th of July Daily avg 28.7 ºC Peak 36.5 ºC @ 15h00 Colling & ventilation 12 MW

5. Summer peak power consumption vs. ambient temperature Hottest day of summer 2015 7 th of July Daily avg 28.7 ºC Peak 36.5 ºC @ 15h00 No beam during the day and magnets not powered P steady 450 GeV = 66 MW P peak = 68 MW P peak @ 16h00 = 68 MW P steady 450 GeV = 66 MW

6. Draft of power consumption reference table 2015Global consumptionCyogenicsRadio FrequencyMagnets & ConvertersCoolingVentilationGeneral ServicesGlobal limits Max daily avgMin daily avgMontly averagedaily peak Max daily avgMin daily avgMax daily avgMin daily avgMax daily avgMin daily avgMax daily avgMin daily avgMax daily avgMin daily avgMax daily avgMin daily avgSum of maxSum of min June70.247.464.181.038.729.06.50.07.10.27.25.73.82.210.59.473.846.5 July69.560.465.182.038.136.06.51.55.71.07.46.04.32.510.49.272.456.3 August71.258.367.281.037.236.77.31.96.91.67.26.24.33.310.49.373.359.2 September October November December January February March Mai

7. LHC cooling and ventilation power (MW) All CV Equipment Equipment Considered by WEBENERGY under Cooling and Ventilation Equipment Considered by WEBENERGY under general services Installed power in LHC Sum of cooling and ventilation equipment rated power 754175-41=34 Expected (by CV) peak in summer 311931-19=12 Measured by EL Extrapolated: 20 12 10 MW in total but, … how much is from CV? G. PeonFCC I&O meeting 23.09.20157 Peak consumption ~ 1.1 x Average consumption ~ 22 MW

8. FCC I&O meeting 23.09.20158 Possible reasons for discrepancy –7 of July was not the worst possible summer day? High temperature but not for very long time No beam for a long period of time Were all the systems that need cooling working at nominal conditions? –Overestimation in user requirements –Overestimation of consumed power by CV running equipment –Error in the measurements? It seems impossible as these measurements are the basis for electricity suppliers bill G. Peon

9. Thank you for your attention