PDF Publication Title:
Text from PDF Page: 008
Int. J. Turbomach. Propuls. Power 2020, 5, 19 8 of 17 Considering the above, we can now proceed to the study of the isentropic efficiency, starting from its equation and the loss model adopted here: wout,id2 − win2 − uout2 − uin2 ∆hs−s = 2 , (9) In order to obtain the value of wout,id, Soderberg [14] loss correlation was used: w = w 1 + ξ , (10) out,id out r And after some rearrangement, the formula of the isentropic efficiency for the i-th row, with the exception of the first one, is obtained: 21+χ2ρr cosβout−ρr2 ρr2 ηis,i = While for the first row: maboodviefimcaetniotinosneindtphredciocdtieo,nthmeoldoeslss.cIotewffiacsiefonutnξdcthanatbtheeeavdaolupattioedn ofofrdaifnfeyreonfttlhoessambovdeemlsednotieosnneodt r pnroetdicicetaiobnlyminofdlueelsn.cIet wthaesrfeosunltds,thaaststhoewadnoipntFioignuorfed9iff. erent loss models does not noticeably influence the results, as shown in Figure 9. (a) (b) Figure 9.. IIsentropic effifficiiency:: (a) Varriiattiion offttheeisiseennttrroopiicceeffiffcicieiennccyywitithhρρrffoorrddiffifeferreennttββout and √ , (11) 1+ξr,i −1+χ2 1−1+ξr,i−1+4ρr2−4ρr ρr2 ρr2 2ρr cosβout−ρr2 ρr2 1+ξr,i−1cosβout ηis,1 = 1+ξr,1 2 1 , ρr2 −1+χ 1−cosβ02 (12) The Soderberg loss coefficient is adopted for all the ensuing calculations, but different models were Int. J. Turbomach. Propuls. Power 2019, 4, x FOR PEER REVIEW 8 of 16 tested as well, such as Ainley and Mathieson [15] and Craig and Cox [16] prediction models. With little fifixed χ;; ((b)) Vaarriaiattioionnoofftthheekkinineemaatitciceeffiffcicieiennccyywitihthρρrffoorrdiffifeferreennt tχχaannddfifxixeeddββout.. r out Sinceξ dependsonthefluiddynamicandgeometricconditionsthataredifferentineachrow, Since ξr depends on the fluid dynamic and geometric conditions that are different in each row, it is not possible to choose a single value of ρ for all rows that optimizes η . This justifies the choice it is not possible to choose a single value of ρrr for all rows that optimizes ηisi,si,i. This justifies the choice ofavelocitytrianglesoptimizationbasedontheselectionoftheρ thatmaximizestheη . of a velocity triangles optimization based on the selection of the ρrr that maximizes the ηkkiin,i. As shown in Figure 10, for a fixed geometry (fixed χ and β ) and by varying the velocity, As shown in Figure 10, for a fixed geometry (fixed χ and βout)oaunt d by varying the velocity, and and consequently ξ , the maximum of the isentropic efficiency is close to the range of the maxima consequently ξr, ther maximum of the isentropic efficiency is close to the range of the maxima of the kinematic efficiency. This supports the choice of an optimization procedure based on the velocity triangles. r outPDF Image | Optimal Design of a Ljungstrom Turbine for ORC Power
PDF Search Title:
Optimal Design of a Ljungstrom Turbine for ORC PowerOriginal File Name Searched:
ijtpp-05-00019.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)