PDF Publication Title:
Text from PDF Page: 050
5.2 High Speed Spin Test Spin Test 22, (October 17, 2008), had a peak shaft speed of 65,000 rpm and pumped 5.25 lb/s (2.4 kg/s) at a compressor inlet of 92.6°F (306.8 K) and 1154 psia (7956 kPa). The maximum measured pressure ratio was 1.58 and the measured motor power was 53 kWe. Power level, compressor outlet temperature, pressure values, and other compressor performance values agree well with the predicted performance maps that were generated by Barber Nichols for these operating speeds (rotor windage losses are included). The results also agree with the Sandia mean-line flow analysis compressor model. The early agreement between models and measurements provides early confirmation of the design basis and performance predictions for the system. More detailed plots of the measured data are shown in Figure 5-7 and Figure 5-8. Figure 5-7 shows the measured shaft speed (blue, rpm), power (magenta, W), and mass flow rate (green, lb/s). The mass flow was measured by the Coriolis flow meter. Before the test began, the gas chiller flow was started, and the orifice control valve was set to a fixed open fraction. The test began by starting the motor/controller and rapidly increasing speed to 10,000 rpm. The shaft speed was kept at this speed for several minutes to allow the loop to approach steady-state conditions. During this time the gas booster pumps were turned on to reduce the gas pressure in the rotor cavity. The reduced cavity pressure provides two functions. First it provides cooling to the bearings, and second it reduces the windage losses on the rotor. Once equilibrium temperatures were reached the shaft speed was increased in increments of 10,000 or 5,000 rpm. At each shaft speed the compressor outlet temperature was allowed to approach steady-state conditions before going to the next shaft speed. The test was stopped after reaching 65,000 rpm to allow Sandia and Barber-Nichols to evaluate the performance of the turbomachinery and the loop before proceeding to the final 75000 rpm. A peak power of 53 kWe was measured in the motor controller, and a peak mass flow rate of 5.25 kg/s (2.38 kg/s) was measured by the Coriolis flow meter. The Coriolis flow meter also provides a real time measure of the compressor inlet density. This measurement shows that the inlet density remains constant (as expected) at 35.5 lb/ft3 (0.567 kg/liter) regardless of the shaft speed. Figure 5-8 shows the measured pressures and shaft speed as a function of time during this test. The compressor exit pressure P500 is shown as the purple curve while the dark blue line shows the static pressure at the tip of the compressor blade (P100). The inlet pressure (P400) is the cyan curve. Knowing the static pressure at the compressor tip and the total pressure at the compressor exit allows one to estimate the CO2 velocity at the exit of the wheel, which helps confirm the compressor performance. The CO2 fluid velocity was on the order of 85 m/s and the tip speed was 125 m/s. 50PDF Image | Operation and Analysis of a Supercritical CO2 Brayton Cycle
PDF Search Title:
Operation and Analysis of a Supercritical CO2 Brayton CycleOriginal File Name Searched:
Infinity_100171.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |