NYSERDA s s DG/CHP Integrated Data System. chp.nyserda.org

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1 NYSERDA s s DG/CHP Integrated Data System and chp.nyserda.org Protocols for Data Collection from DG/CHP Systems Hugh Henderson, Jr., P.E. CDH Energy Corp. Cazenovia, NY

2 What is DG/CHP? DG/CHP stands for Distributed Generation / Combined Heat and Power DG/CHP systems generate electricity and recover waste heat to displace other fuel purchases Microturbines, Engine Generators, Fuel Cells, Gas Turbines

3 chp.nyserda.org NYSERDA is currently sponsoring 105 DG/CHP sites, totaling 107 MW (86 in database) 13 sites (25 power units) have some monitored data available back to 2001 Performance data for 6 sites are collected each night (10 power units) Descriptive and operational reliability (OR) data are being entered as it becomes available: 4 sites entering OR data 2 page fact sheets

4 Facility Details Facility details on one page: DG/CHP unit descriptions System schematics Links to other pages related to the site and project developers Online monitored data and plots, standardized reports and documentation Utility rate calculations Download monitored data to CSV for further analysis Examine outage and operational reliability reports Emissions data

5 Online Monitored Data Reports Select one or more sites, based on user specified criteria Combine data across multiple sites Comparedata between sites (group by utility, technology type, etc). Createtime series, XY scatter, and daily profile plots Choose hourly, daily, or monthly data aggregation

6 Online Monitored Data Reports Time series plots of daily energy, fuel input, and DG/CHP efficiency for three monitored sites

7 Online Monitored Data Reports Time series plots of previous three power units with data aggregated together XY Scatter plot of DG/CHP and Total Facility Power

8 Standardized Reports Reports are produced detailing total facility consumption and DG/CHP production Standardized reports contain additional plots and analysis not available on the online data system Reports available on a monthly or annual basis Special reports on Power Quality, etc

9 Utility Rate Calculations Calculate DG/CHP economic performance using measured data for ~130 electric utility rate structures Incorporates all electric rate calculations including impacts of demand, ratchets, commodity energy costs, etc Allows user to specify marginal cost of gas for both DG/CHP system and recovered heat value to determine total economic analysis

10 DG/CHP Data Collection Protocols ASERTTI is leading national efforts to develop a DG/CHP Protocols for: Laboratory testing Field testing (short-term) Long-term Monitoring Case Study presentation CDH Energy developed Monitoring and Data Collection Std for NYSERDA Interprets protocols as applied to NYSERDA sites Defines compatibility with NYSERDA CHP web site PDF available under Links at chp.nyserda.org

11 DG/CHP Data Points from Monitoring and Data Collection Std Net Generated Power (WG - WP) WT Purchased Power Generated Power WG WP FGG Fuel CHP System Pump Parasitic Power 180F QD Dump Radiator QHR HX 140F Load FGT Measured Data Points WG - Power Generated (net internal parasitcs) WP - Parasitic Power (external parasitics) FGG - Natural Gas Flow into Generator QHR - Useful Heat Recovery QD - Heat that is Dumped or Unused WT - Total Facility Power FGT - Total Facility Gas Flow /Use Thermal Measurements (to find useful and dumped output) Facility Boundary Fuel

12 Good Monitoring Practice from Monitoring and Data Collection Std Develop a monitoring plan! Schematic & Tag Naming Conventions: Good: T1,T2,T3..or TDI, TDO..or t-digester-out Bad: TA, T2, T-III or the-tmp-from-thing Define engineering units: kwh/interval, cf/h,.. Record data at 15-min or 60-min intervals Record kwh when possible (count pulses) Integrate flow x ΔT measurements Q Consistent file formats (e.g., CSV)

13 Data Points for a Digester biogas flare FGF FGE Loads biogas from Emerling Farms Engine Panel WG WT_exp WT_in exhaust Digester Exhaust HX Low Limit (mixing vlv) Utility Transformer TD High Limit (diverting vlv) TDI Plate HX TRO TRI FR TLO FD TDO TLI FL Radiator Differences: Exported power Flare gas flow Uncertain fuel heating value Digester temperatures Thermal Load

14 CHP Website Conventions for Digester Sites Facility Power (WT) WT = Import Export Total Facility Gas Use (FGT) Flared Biogas Useful Heat Recovery (QHR) QHR = Q digester + Q load Unused Heat Recovery (QD) QD = Q radiator

15 Patterson Farms Data collection started on March 10 Engine generates 200 kw Farm exports about as much as 140 kw Importing Exporting

16 Patterson Farms Engine efficiency is ~20% Implies LHV is lower than assumed 600 Btu/ft3 Total CHP Efficiency is 40-50%

17 Summary DG/CHP website is starting to get digester farm data Protocol and data collection issues similar to other DG/CHP sites Some additional data collection required for digester sites We will add some standardized reports related to digester performance chp.nyserda.org