PDF Publication Title:
Text from PDF Page: 004
1228 X.R. Zhang, H. Yamaguchi / Applied Thermal Engineering 28 (2008) 1225–1233 1.0 0.8 0.6 0.4 0.2 0.0 5:00 7:00 9:00 11:00 Time 15:00 35 30 25 20 15 10 5 0 17:00 19:00 Solar radiation Air temperature Fig. 3. Variations in the solar radiation and atmosphere temperature measured with time. 13:00 and flow rate of 0.03 kg/s, respectively. A Coriolis effect mass flow meter (CT9401-KIMM30) is used to monitor and record the mass flow of liquid CO2, which also has a maximum permissible operating pressure of 12 MPa. The flow meter is installed in the downstream side of the CO2 feed pump, as shown in Fig. 1. It provides a measurement range of 0.09–2.0 kg/min with an accuracy of ±0.1%. Five T-type thermocouples and five pressure transmit- ters are mounted at different positions in the CO2 flow to measure its temperatures and pressures, with an accuracy of ±0.1 °C for temperature measurements and ±0.2% for pressure measurements. The measuring points of these sen- sors are also shown in Fig. 1. The heat exchanging compo- nents are intended to dissipate heat from the CO2 loop, and cool CO2 to temperature low enough becoming liquid state to be pumped back into the collector. There are simulta- neous high-temperature heat exchanger (heat exchanger 1) and low-temperature heat exchanger (heat exchanger 2) installed in the CO2 loop in order to achieve CO2 liquid state at the inlet of the CO2 feed pump. In the present study, higher-temperature water (hot water) and lower- temperature water (cold water) are, respectively supplied to the heat exchangers 1 and 2 (CO2/water heat exchanger) to dissipate heat from the CO2 loop in the experimental set- up, as shown in Fig. 1. A mechanical-draft water cooling tower (CTA-5 NE) is used as a heat sink, dissipating heat collected from the CO2 cycle to the ambient. In order to achieve a good heat exchange between CO2 and water, shell 200 150 100 50 0.0 0.2 200 150 100 50 0 9:00 11:00 0.4 0.6 I (kW/m2) 0.8 1.0 Measured data Polynomial fit curve (T =51.6+282.3I-151.5I2) 1 Solar collector inlet Solar collector outlet 13:00 15:00 Time 17:00 Fig. 4. Variations in the CO2 temperature measured with the solar radiation (a) and with the time (b). 10 9 8 7 6 5 0.0 10 8 6 4 2 0 9:00 0.2 0.4 0.6 I (kW/m2) 0.8 1.0 Measured data Polynomial fit curve 2 (P =4.3+10.4I-5.6I ) 1 11:00 13:00 Time 15:00 17:00 Fig. 5. Variations in the CO2 pressure measured with the solar radiation (a) and with the time (b). Temperature (°C) T1 (°C) Pressure (MPa) P (MPa) 1 Solar radiation (kW m2) Air temperature (°C)PDF Image | study on evacuated tube solar collector using supercritical CO2
PDF Search Title:
study on evacuated tube solar collector using supercritical CO2Original File Name Searched:
evac_tube_CO2.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 (Standard Web Page)