Circulating Block Heater

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Circulating Block Heater. Alfredo Gutierrez Cal TF Work Paper Presentation October 23, 2014. Agenda. Objective: Seeking TF approval of draft workpaper Measure Description Work Paper Methodology Results Issues and Concerns Questions or Comments. Measure Description. Base Case - PowerPoint PPT Presentation

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Circulating Block HeaterAlfredo GutierrezCal TF Work Paper PresentationOctober 23, 2014

EDISON INTERNATIONALSMInternal Use OnlyPage #1AgendaObjective: Seeking TF approval of draft workpaperMeasure DescriptionWork Paper MethodologyResultsIssues and ConcernsQuestions or CommentsEDISON INTERNATIONALSMInternal Use OnlyPage #Measure DescriptionMeasure CaseCirculating block heaterIntegrated pump circulates heated coolant through engine blockLeads to more uniform temperaturesRequires a smaller heating element due to improved temperature mixingBase CaseThermo siphon heaterRelies on temperature variation to drive circulation which leads to non-uniform temperaturesGenerates waste heatOnly contains an electric resistance heater

EDISON INTERNATIONALSMInternal Use OnlyPage #Measure DescriptionUnits: Per unit

Measure Application and Delivery TypeDownstream Deemed (ER or ROB depending on existing equipment age)

EligibilityClimate zones: AllBuilding types: All Non-Residential

Target MarketIndustrial sectorCommercial sector

Market PotentialEstimated at 300 installations in 2014 though SCEs customized program by years end.EDISON INTERNATIONALSMInternal Use OnlyPage #Measure DescriptionMeasure CostsBaseline cost (material + labor): $750 $1,500Measure cost: $1,000 - $1,800Incremental cost: $250 - $600

EUL15 years (DEER EUL ID: Motors-pump)

Net-to-Gross0.85 (DEER EUL ID: ET-Default)EDISON INTERNATIONALSMInternal Use OnlyPage #Work Paper MethodologyBaseline/Measure data collectionBaseline/Measure methodologykWh vs OA was collected, on average, for 2 months pre and postRegression models were then created from site dataAverage yearly temperature found for each climate zone2013 CEC TMY2 weather filesAssumed 334 days of operation for the heaterOne month of downtime for maintenanceBonneville Power Administration (BPA) Emerging Technology Case Studies17 SitesWaste Water PlantsData CentersParametersDaily Average kWhOutside Air (OA) TemperatureDuty CycleEDISON INTERNATIONALSMInternal Use OnlyPage #Work Paper MethodologyBaseline Regression ModelBaseline MethodologyEDISON INTERNATIONALSMInternal Use OnlyPage #Work Paper MethodologyMeasure Regression ModelMeasure MethodologyEDISON INTERNATIONALSMInternal Use OnlyPage #Work Paper MethodologyYearly Average TemperatureSensitivity AnalysisBin MethodUsed to find the savings associated with a daily average temperature instead of yearly average temperatureSavings found and compared between daily and yearly average temperatures for climate zone 6 and 15Climate ZoneAverage Yearly Dry Bulb Temperature (F)6 61.5 8 63.4 9 63.5 10 63.9 13 63.8 14 62.4 15 75.2 16 51.5 EDISON INTERNATIONALSMInternal Use OnlyPage #ResultsSensitivity Analysis ResultsClimate Zone 6

Climate Zone 15

MeasureSensitivity Analysis Savings (kWh)Original Savings (kWh)% Difference in Savings37-199 kW Generator with Circulating Block Heater1,6101,6180.50%200-799 kW Generator with Circulating Block Heater3,2733,2860.39%800-1099 kW Generator with Circulating Block Heater8,2778,3090.39%1100-2500 kW Generator with Circulating Block Heater12,19812,6363.46%MeasureSensitivity Analysis Savings (kWh)Original Savings (kWh)% Difference in Savings37-199 kW Generator with Circulating Block Heater1,8181,8300.65%200-799 kW Generator with Circulating Block Heater3,6003,6190.52%800-1099 kW Generator with Circulating Block Heater9,0979,1440.51%1100-2500 kW Generator with Circulating Block Heater23,41124,0542.67%EDISON INTERNATIONALSMInternal Use OnlyPage #ResultsTable of results

*Averages for all SCE climate zones are shown above.MeasureAverage kWh Savings*Average kW Reduction*Average Therm Savings*37-199 kW Generator with Circulating Block Heater 1,641 0.20630200-799 kW Generator with Circulating Block Heater 3,321 0.41630800-1099 kW Generator with Circulating Block Heater 8,398 1.047501100-2500 kW Generator with Circulating Block Heater 13,859 1.73000EDISON INTERNATIONALSMInternal Use OnlyPage #Issues and Concerns Cal TF CommentsAbstract Review Comments from the Cal TF

Perform a sensitivity analysisA bin analysis using daily average temperatures was performed for two climate zones (6 & 15)The savings from the bin analysis and the original methodology are within 4% (and 1% for 3 of the 4 measures)

Verify if savings will be impacted by thermostatic controlsAs SCE is still awaiting monitored data from customized projects, the impact of thermostatic controls is not yet known. They will be verified as soon as data is received from custom projects installed within SCE territory.EDISON INTERNATIONALSMInternal Use OnlyPage #Equipment CostPreliminary costs were taken from one customerWith more customers, we will have a better set of data to establish equipment/labor costs

SCE Specific DataCurrently, BPA data is used. This data source has been questioned whether it is appropriate for SCE territory.Data for 10 sites is scheduled to be provided by early December. The work paper will then be updated with this new data.Issues and Concerns Future UpdatesEDISON INTERNATIONALSMInternal Use OnlyPage #Questions or Comments?EDISON INTERNATIONALSMInternal Use OnlyPage #