PDF Publication Title:
Text from PDF Page: 143
C1. Introduction Appendix C. PCHE Codes Manual The PCHE models developed by Hejzlar [Hejzlar et al., 2007] are based on a simple convective heat transfer model which uses fluid properties from NIST to calculate the heat transfer inside the semi-circular channel of a PCHE. The codes included the option of a formed plate containing detection gas channels for heat exchangers like the S-IHX where exothermic reactions occur between the two fluids. There is considerable room for improvement in the PCHE codes, such as combining them into one user-friendly code with a common input and output file. Also, heat transfer coefficients for boiling water in zig-zag semi-circular channels are not developed well enough to use in heat exchanger design with confidence. Experimental work with this geometry would advance the use of PCHEs as steam generators in SFRs. C.2 Inputs and Outputs The PCHE codes are easy to run and the outputs are easy to read. The main caution for a new user is to ensure that none of the inputs are unphysical. For instance, the plate thickness cannot be narrower than 1⁄2 the channel diameter. Also, water pressures must remain below 21.0 MPa for the heat transfer correlations to be appropriate. The user need not remember to use straight channels for sodium; the code is hardwired to do so. Each PCHE code is wholly contained in its own file. The names of the files, and their individual purposes for calculations, are listed in Table C.1. Each code can be run by replacing the file in the workspace with the desired code and compiling again. Table C.1: Files needed for each PCHE code Sodium-Sodium Heat Exchangers Sodium-CO2 Heat Exchangers Sodium-Water Heat Exchangers Program File ihxNa.f90 ihxNa_Hyb.f90 ihxNa_Hyb2.f90 Input File ihxNa.in IhxNa_Hyb.in ihxNa_Hyb2.in Output File ihxNa.out ihxNa_Hyb.out IhxNa_Hyb2.out The input and output files require the user to specify the geometry of the plates at the entrance to the channels. Then the code will determine the necessary length of channels to achieve the desired heat transfer. As an example, the input file for a hybrid Na-CO2 heat exchanger is given in Figure C.1 and the output file is in Figure C.2. 143PDF Image | Supercritical Carbon Dioxide Cycle Analysis
PDF Search Title:
Supercritical Carbon Dioxide Cycle AnalysisOriginal File Name Searched:
547500498.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 |