M&V Plan for DG/CHP System

Transcription

1 for DG/CHP System Adelphi University Revised June 21, 2016 Submitted to: New York State Energy Research and Development Authority 17 Columbia Circle Albany, NY Submitted by: CDH Energy Corp Bingley Road Cazenovia, NY

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3 Project Team: NYSERDA Project Manager: Joanna Moore Tel (518) x 3220 joanna.moore@nyserda.ny.gov Developer / Applicant: Simon Lessard Ecosystem th Avenue, Suite 1605 New York, NY Tel (646) x 2217 Simon.Lessard@ecosystem.ca NYSERDA QC Contractor: John Defrees Modern Energy, LLC 5533 State Route 80 Tully, NY Tel (315) john@modernenergyllc.com NYSERDA M&V Contractor: Adam Walburger Jeremy Wade CDH Energy Corp Bingley Rd Cazenovia, NY Tel (315) adam.walburger@cdhenergy.com jeremy.wade@cdhenergy.com CDH Energy Corp. 6/2016 Page i

4 Introduction Ecosystem is in the process of installing a combined heat and power (CHP) system at the Adelphi University campus in Garden City, NY. The CHP system is based on a Jenbacher JMS612, natural gas fueled, reciprocating engine generator set with a nominal electrical output rating of 1,979 kw. The site s electrical demand is sufficient to keep the system operating at or near its rated capacity on a continuous basis. The CHP system will be housed in a container to limit the noise level and allow the radiative heat to be rejected from the space. This will be accomplished by circulating tempered air through the container. The exhaust side of the container air stream will pass through a heat dump coil that will be used to reject excess waste heat from the system. A separate dry cooler will be located outside the building to provide some additional low temperature cooling requirements. The Jenbacher has separate high temperature (HT) and low temperature (LT) heat recovery loops. The HT heat will be recovered as hot water from both the engine jacket and exhaust at a final supply temperature of 205 F and supplied directly to the campus hot water loop to displace boiler operation, with a peak recovery rate of 6.75 MMBtu/h. Excess HT heat will be rejected to the container s exhaust air stream through the HT dump coil with a capacity of 2.75 MMBtu/h and exhausted to ambient. All of the LT heat will be rejected using an external dry cooler rated at MMBtu/h. Peak operation of the CHP system will result in the following performance: Gross Electrical Output: Parasitic Electrical Input (estimated): High Temperature Loop Heat Recovery: Fuel Input: 1,979 kw ~75 kw (estimated) 6.75 MMBtu/h 15.7 MMBtu/h CDH Energy Corp. 6/2016 Page 1

5 Instrumentation In order to quantify the performance of the proposed CHP system, the CHP system fuel input, net electrical output, and useful thermal output must be measured. To capture these energy flows, an instrumentation plan was developed by CDH Energy based on system configuration and information provided by the applicant, Ecosystem. The instrumentation plan covers the location and type of sensors necessary to provide the appropriate measurements of the energy flows of the system. In accordance to the instrumentation plan, Ecosystem will supply the instrumentation listed below in Table 1 for use in meeting the NYSERDA CHP program monitoring requirements. Table 1. Instrumentation Supplied by Ecosystem for CHP Analysis No. Data Point Description Eng Units Instrumentation Output Location 1 WGgross Gross Generator Output kw/ kwh Schweitzer SEL-735 Modbus CTs at Generator Mains 2 WPAR Parasitic Load kw/ kwh Carlo Gavazzi WM30 96 Type AV5 Modbus Parasitic Load MCC 3 FG Gas Consumption cf Utility Pulser Pulse Gas Service Entrance 4 FH HT Loop Flow gpm Endress Hauser Promag L 400, 5L4C1F, DN150 6" 4-20 ma (PLC Analog Input) Between V2 and V3 5 THS HT Loop Temp - After EHR HX ⁰F Siemens 100-OHM Platinum RTD Ohms (PLC Analog Input) Existing before Boiler Loop 6 THR1 HT Loop Temp - After Boiler Loop ⁰F Siemens 100-OHM Platinum RTD Ohms (PLC Analog Input) Existing after Boiler Loop 7 THR2 HT Loop Temp - After HTHC ⁰F Siemens 100-OHM Platinum RTD Ohms (PLC Analog Input) Between V2 and V3 EHR: HTHC: Exhaust Heat Recovery High Temperature Heating Coil CDH Energy Corp. 6/2016 Page 2

6 FROM GAS UTILITY WG TO ELECTRIC UTILITY WPAR TO PARASITIC LOADS COGEN CONTAINER FROM BUILDING Bypass THS Exhaust Heat Recovery HX FG WG gross FROM RETURN Bypass High Temp HX Jenbacher Gen Set 2 MW TOTAL Low Temp HX Bypass Dry Cooler THR1 THR2 FH AIR DILUTION FROM BOILER ROOM Bypass High Temp Dump Coil TO BOILERS TO RETURN TO EXHAUST Figure 1. Energy Flow Schematic for Adelphi University CHP CDH Energy Corp. 6/2016 Page 3

7 Figure 2. CHP P&ID with Locations for the Heat Recovery Instrumentation Readings for the installed instrumentation will be recorded by an Obvius AcquiSuite data logger provided and installed by CDH Energy. All field point sensors will report to a Siemens plant control system (PCS), and the CDH data logger will interface with the PCS system via a BACNET MS/TP connection, which is translated to a MODBUS RTU connection via a Control Solutions BB gateway. The data logger will sample all sensors via the PCS connection approximately once per minute and record the resulting register values. The one minute readings of heat recovery temperatures and flows will be used to provide an accurate calculation of the heat transfer on the heat recovery loop. In addition, if integrated heat transfer calculations are performed by the PCS, the data logger will collect these point for comparison to the fundamental flow and temperature difference readings. Based on the number of monitored data points, the logger will have sufficient memory to store 30-days of data if communications with the logger are interrupted. The data will be CDH Energy Corp. 6/2016 Page 4

8 downloaded from the data logger once per day via an internet connection provided by the site/applicant. The data will be loaded into a database, checked for validity, and posted on the NYSERDA web site. On Site Installation The CDH data logger and MODBUS gateway are installed in the Siemens PCS control panel. The PCS control panel provides 24 VDC power, Ethernet connection to the Internet, and BACNET MS/TP connection to the PCS. Communications The data logger will require a connection to the internet. A dedicated external static IP address will be provided by the facility that will allow access to the logger remotely for configuration purposes. The logger will upload data every night to the CDH servers. The logger has the following static IP address and network configuration. IP Address: Netmask: Gateway DNS #1 DNS #2 XXX.XXX.XXX.XXX XXX.XXX.XXX.XXX XXX.XXX.XXX.XXX XXX.XXX.XXX.XXX XXX.XXX.XXX.XXX On Site Support CDH Energy will communicate with the site and applicant for access to all areas necessary to complete the monitoring installation, as well as any return trips for verification of sensors or service to the monitoring system. CDH Energy Corp. 6/2016 Page 5

9 Data Analysis The collected data will be used to determine the net power output of the system as well as the fuel conversion efficiency (FCE). Table 2. Full Data Point List Used for CHP Energy Balance and Analysis No. Data Point Description Eng Units Notes: 1 WGgross_KW Gross Generator Output kw 2 WGgross_KWH Gross Generator Output kwh 3 WPAR_KW Parasitic Load kw 4 WPAR_KWH Parasitic Load kwh 5 WG_KW Net Generator Output kw Calculated 6 WG_KWH Net Generator Output kwh Calculated 7 FG Gas Consumption cf 8 FH HT Loop Flow gpm 9 THS HT Loop Temp - After EHR HX ⁰F 10 THR1 HT Loop Temp - After Boiler Loop ⁰F 11 THR2 HT Loop Temp - After HTDC ⁰F 12 QU Useful Recovered Heat MBtu Calculated 13 QR HT Loop Rejected Heat MBtu Calculated EHR HTDC Exhaust Heat Recovery High Temperature Dump Coil Peak Demand or Peak kw The peak electric output or demand for each power reading will be taken as the average kw in a fixed 15-minute interval (0:00, 0:15, 0:30, etc.), or Δ 0.25 The power meter measures the gross output of the generator and the net power output from the CHP system is defined as: The parasitic power is measured by a single power transducer installed in MCC-2, the CHP plant parasitic panel. The panel contains all necessary parasitic loads for operation of the CDH Energy Corp. 6/2016 Page 6

10 CHP plant. Table 3 lists the parasitic loads for the CHP system. An estimated total of kw of parasitic loads are identified. Table 3. MCC-2 Parasitic Load Panel Schedule Loads Power (HP) Power (KW) RLA (A) MCC Location Note Supply Fans : 1 VFD for 2x15 hp fans C1 2 Power from 80% LF Exhaust Fans : 1 VFD for 3x20 hp fans C2 1 Power from 80% LF Dry cooler Fan 4fans MCA 17,85 MOP C3 3 Power from 0.8 PF Boiler air make up fan 9900CFM C1 3 Power from 80% LF Scavenging fan M.02 M C4 3 Primary Oil pump # C3 1 Power from 0.85 PF Primary Oil pump # C3 2 Power from 0.85 PF HT pump 385 gpm (cold side) C2 2 Power from 80% LF Engine jacket water pump M.04 M C3 4 LT pump 110 gpm (cold side) C3 5 Power from 80% LF Prelubrification oil pump M.03 M C4 1 Suppy gearcooling water pump M.18 M C4 2 Supply 480V auxiliares 1.0 C5 4 Supply battery charge C4 4 Power from 1.0 PF Supply battery charge C4 5 Power from 1.0 PF Supply heating rods M.04 W C5 2 Gas booster C5 3 Power from 0.85 PF Lubrification Oil Pump C3 6 Power from 80% LF Maximum Parasitic Power CDH Energy Corp. 6/2016 Page 7

11 Heat Recovery Rates The heat recovery rates will be calculated offline based on the 1-minute data collected. The piping arrangement at this site allows for multiple heat rates to be determined with three temperature sensors and one flow measurement on the heat recovery loop. Useful Recovered Heat (QU) is defined as the heat transferred to the building boiler loop: 1 1 Rejected Heat (QR) is defined as the unused heat dumped into the container exhaust air stream: N is the number of scan intervals included in each recording interval (e.g., with 1-minute data, N=60). The k-factor is the product of the density and specific heat of the heat transfer fluid. The heat transfer fluid for the high temperature loop is expected to be pure water, which has a k- factor of 500Btu h gpm at an operating temperature of 205 F. CDH Energy Corp. 6/2016 Page 8

12 Calculated Quantities The net power output from the CHP system (WG), will be defined as the gross output of the generator (WG gross )minus the measured parasitic loads (WPAR). The fuel conversion efficiency of the CHP system, based on the higher heating value of the fuel, will be defined consistent with the NYSERDA CHP Systems Manual 2013 as:. 3,413 Where: QU - Useful heat recovery (Btu) Nominal boiler efficiency displaced by useful heat WG - Net generator output (kwh) FG - Generator gas consumption (Std CF) HHV gas - Higher heating value for natural gas (~1,030 Btu/CF). The FCE can be calculated for any time interval. When converting to daily, monthly, or annual values, each value is summed and then the formula below is applied:. 3,413 Where N is equal to the number of intervals in the period of interest. CDH Energy Corp. 6/2016 Page 9

13 Drawings CDH Energy Corp. 6/2016 Page 10

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15 Waldron ecosys Tem

16 Approval manual 15 avril 2011 DRAWER SPECIFICATION TABLE ELKON drawer Identification Customer Identification Fonction Power Fuse size Voltage Phase C1-1 Power meter Energy analyser - 2/10A 480V 3 C1-2 Supply Fans Variable frequency drive 30HP 60A 480V 3 C1-3 Boiler air make up fan Variable frequency drive 20HP 40A 480V 3 C2-1 Exhaust Fans Variable frequency drive 60HP 100A 480V 3 C2-2 HT pump 385 gpm (cold side) Variable frequency drive 20HP 30A 480V 3 C3-1 Primary Oil pump #1 Starter 2HP 15A 480V 3 C3-2 Primary Oil pump #2 Starter 2HP 15A 480V 3 C3-3 Dry cooler Fan Supply 15HP 25A 480V 3 C3-4 Engine jacket water pump M.04-M002 Starter 10HP 15A 480V 3 C3-5 LT pump 110 gpm (cold side) Starter 2HP 15A 480V 3 C3-6 Lubrification oil pump Starter 1/3HP 15A 480V 3 C4-1 Prelubrification oil pump M.03-M002 Starter 3HP 15A 480V 3 C4-2 Supply gearcooling water pump M.18-M002 Starter 3/4HP 15A 480V 3 C4-3 Scavenging fan M.02-M001 Starter 1-1/2HP 15A 480V 3 C4-4 Supply battery charge 1 Supply - 15A 480V 3 C4-5 Supply battery charge 2 Supply - 15A 480V 3 C4-6 SPARE Supply - 60A 480V 3 C5-1 SPARE Supply - 150A 480V 3 C5-2 Supply heating rods M.04-W-001 Supply 12KW 20A 480V 3 C5-3 Gas booster Supply - 20A 480V 3 C5-4 Auxiliary supply Supply 1KW 15A 480V 3 C5-5 SPARE Supply - 60A 480V 3

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18 Site Photos Woodruff Hall CHP Gross Output Meter (WG gross ) SEL-735 (top) MCC-2 Parasitic Power Meter (WPAR) THS CHP Supply to Campus Loop CDH Energy Corp. 6/2016 Page 14

19 THR1 CHP Return From Campus Loop THR2 CHP Return To CHP Unit (After Dump Coil) FHW Flow Meter & HT Circulation Pump CDH Energy Corp. 6/2016 Page 15