PDF Publication Title:
Text from PDF Page: 025
SRI/USEPA-GHG-VR-27 September 2003 Results from the extended test are used to report total electrical energy generated and used on site, total thermal energy recovered, greenhouse gas emission reductions, and electrical power quality. Greenhouse gas emission reductions are estimated using measured greenhouse gas emission rates, emissions estimates for electricity produced at central station power plants, and emissions estimates for the Munters unit gas- fired burners. 1.4.1. Heat and Production Performance Electrical efficiency determination was based upon guidelines listed in ASME PTC-22 [5], and was calculated using the average measured net power output, fuel flow rate, and fuel lower heating value (LHV) during each 30-minute test period. The CHP system has two primary parasitic loads at this facility: (1) the gas-pressure booster compressor, and (2) the PG fluid circulation pump. This verification includes measurement of these two parasitic loads to report the net system efficiency. For potential users with access to has high-pressure gas and/or PG circulation facilities, the gross power output and electrical efficiencies are also reported here. The electrical power output (in kW) was measured continuously throughout the verification period with a 7600 ION Power Meter (Power Measurements Ltd.). A second power meter (7500 ION) was used to simultaneously monitor parasitic power consumption by the gas compressor. The power consumed by the PG circulation pump was not independently monitored by the GHG Center, but is continuously logged by site operators at one-minute intervals. The corresponding one-minute data logged by the operators were used to determine pump draw. The accuracy of the pump draw data was not verified but is stated by the manufacturer to be within ± 1 percent of reading. The reported parasitic load, at approximately 0.75 kW during all test periods, represents a small portion of total CHP system heat and power production. Therefore, a true assessment of watt-meter accuracy is not expected to impose a significant impact on the net efficiency determination. Fuel input was measured with an in-line orifice-type flow meter (Rosemount, Inc.). Fuel gas sampling and energy content analysis (via gas chromatograph) was conducted according to ASTM procedures to determine the lower heating value of natural gas. Ambient temperature, relative humidity, and barometric pressure were measured near the turbine air inlet to support the determination of electrical conversion efficiency as required in PTC-22. Electricity conversion efficiency was computed by dividing the average electrical energy output by the average energy input using Equation 1. η = 3412.14 kW HI where: η circulation pump) HI= average heat input using LHV over the test interval (Btu/hr); determined by multiplying the average mass flow rate of natural gas to the system converted to standard cubic feet per hour (scfh) times the gas LHV (Btu per standard cubic foot, Btu/scf) 3412.14= converts kW to Btu/hr (Eqn. 1) = efficiency (%) kW= average net electrical power output measured over the 30-minute interval (kW), (Capstone 60 power output minus power consumed by gas compressor and PG 1-9PDF Image | Environmental Technology Verification Report
PDF Search Title:
Environmental Technology Verification ReportOriginal File Name Searched:
Capstone-ETV-Report.pdfDIY PDF Search: Google It | Yahoo | Bing
Capstone Turbine and Microturbine: Capstone microturbines used and new surplus for sale listing More Info
Consulting and Strategy Services: Need help with Capstone Turbine, sizing systems, applications, or renewable energy strategy, we are here to assist More Info
Container Lumber Dry Kiln: Since 1991 developing and innovating dry kilns using standard shipping containers More Info
Supercritical CO2 Lumber Dry Kiln: Compact fast drying in 3 days or less for small amounts of wood and lumber drying More Info
BitCoin Mining: Bitcoin Mining and Cryptocurrency... More Info
Publications: Capstone Turbine publications for microturbine and distributed energy More Info
FileMaker Software for Renewable Energy Developing database software for the renewable energy industry More Info
CO2 Gas to Liquids On-Demand Production Cart Developing a supercritical CO2 to alcohol on-demand production system (via Nafion reverse fuel cell) More Info
Stranded Gas for low cost power Bitcoin Mining Using stranded gas for generators may provide breakthrough low power costs for cryptocurrency miners. More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)