PDF Publication Title:
Text from PDF Page: 014
Parabolic Trough Solar System Piping Model Final Report NREL Contract No. AAA-2-32432-01 Optimization Process The procedures for calculating the pipe diameters, wall thicknesses, and insulation thicknesses for each header section are outlined below. The only constraint on the design is the fluid pressure at the exit from the hot header must be equal to a minimum value set by the user. This feature is principally used with a synthetic oil heat transport fluid to ensure the fluid pressure always remains above the vapor pressure. Hydraulic and Thermal Development 1. Basic pipe dimension data, such as nominal diameter, wall thickness, and unit weight, for commercial pipe sizes between 2.5 and 48 inches are shown in the worksheet labeled “PipeData”. 2. Allowable pipe stresses as a function of temperature are shown in the worksheet labeled “SvsT”. For fluid temperatures below 399 °C, the data are applicable for ASTM A106, Grade B, seamless carbon steel pipe. For fluid temperatures between 400 °C and 510 °C, the data are applicable for ASTM A335, Grade P91, low alloy steel. 3. For a given nominal pipe diameter, the required wall thickness is calculated using the familiar equation: (Pressure,bar −1)(Outsidediameter,mm)(100,000 Pa ) Wall thickness,mm = bar (2)(Allowable stress,MPa)(1,000,000 Pa ) + (0.4)(Pressure,bar − 1)(100,000 Pa ) MPa bar [3] The allowable stress is a function of the pipe temperature, and is calculated through a curve fit of the data in “SvsT”. 4. The actual wall thickness is calculated from the minimum wall thickness through the Excel function ActualWall(Dia, MinWall), where ‘Dia’ is the nominal pipe diameter in inches, and ‘MinWall’ is the calculated wall thickness from above. ActualWall is, in essence, a lookup table, which searches for the wall thickness that is the greater of the following: the first commercial pipe wall thickness greater than ‘MinWall’, or a minimum wall thickness of ‘STD’. 5. Friction losses through the header sections, the heat collection elements, and the crossover piping, per meter of length, are calculated using the standard Darcy-Weisbach equation: is calculated using the FricFactor(Rough, Reynold) function in Excel, where ‘Rough’ is ⎡(Velocity, m )2 ⎤ h ,m=(f)⎡ 1m ⎤⎢ sec ⎥ f ⎢⎣Pipeinsidediameter,m⎥⎦⎢ (2)(g , m ) ⎥ ⎢c2⎥ ⎣ sec⎦ where f is the friction factor, and gc is the acceleration due to gravity. The friction factor [4] - 9 - September 15, 2002PDF Image | Parabolic Trough Solar System Piping Model
PDF Search Title:
Parabolic Trough Solar System Piping ModelOriginal File Name Searched:
40165.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 |