PDF Publication Title:
Text from PDF Page: 007
D.Maksiuta, L.Moroz, M.Burlaka, Y.Govorushenko / Energy Procedia 00 (2017) 000–000 7 For this purpose, axial high-pressure (HPT) and low-pressure (LPT) turbines were designed with the boundary conditions specified in Table 1. RIT for aforementioned boundary conditions were designed in paper [3]. In this article they are also presented and are turbines regarding to which performance comparison was carried out. Main characteristics of all aforementioned turbine types are collected in Tables 2, 3. It should be noted that in common practice, axial turbines for ORC are limited to 3 stages due to mechanical or compactness restrictions. The same conclusion can be drawn regarding ROT. Despite this it should be noted that aerodynamic efficiency changes unequally for axial turbines and ROT with the changing of number of stages. In Fig.6 are comparative charts of how number of stages affects a turbine’s total-to-static efficiency for axial turbine and ROT (both turbines were designed using HPT boundary conditions). 0.90 0.80 0.70 0.60 0.50 ROT axial 2 4 6 8 10 Number of stages Fig. 6. Dependence of the efficiency on the turbine stage number for axial turbine and ROT Obviously, the maximum efficiency for axial turbine’s and ROT are almost the same. However, in order to achieve maximum efficiency, the axial turbine should be performed with the high number of stages. The ROT efficiency slightly changes with decreasing of number of stages. For example, for considered ROT, efficiency of the seven-staged design is 2.8% lower than of the three-staged design, while for axial turbine this difference achieves 30%. Such efficiency benefit is a big advantage of ROT, especially when the maximum number of stages is limited. In present paper we do not consider any particular restrictions: mechanical or compactness limitations. Therefore, further analysis is performed using only one design criterion – turbine aerodynamic efficiency. Table 2. Performance data and crucial dimensions of the HPTs Parameter Internal t-s efficiency Power Shaft rotational speed Number of stages Max Mach number Min machine diameter Max machine diameter1 Axial length Machine volume2 Unit Axial – 0.9047 kW 269.5 rpm 18305 – 10 – 0.529 mm 62.48 mm 114.7 mm 86.1 dm3 (liter) 0.89 RIT 0.8518 211.4 40 000 1 1.142 45.2 106.1 37.7 0.333 ROT 0.8953 266.5 27 129 5 0.949 56.3 114 12.8 0.131 Table 2 shows that different HPT types have significant differences in efficiency. The highest efficiency (and power respectively) has the 10 staged axial turbine. Radial-outflow turbine efficiency is slightly lower because of the stage number limitation. Wherein, efficiency of both the axial and the radial-outflow turbines are superior far from RIT performance values. Due to reduced shaft rotational speed in ROT and axial turbine, maximum Mach number is also reduced, that is obviously beneficial to the flow in the flowpath. 1 without volute 2 approximate value calculated as multiplication of the circle area of maximal radial dimension to the axial length Efficiency (t-s)PDF Image | radial-outflow turbine type for 3 MW WHR organic Rankine cycle
PDF Search Title:
radial-outflow turbine type for 3 MW WHR organic Rankine cycleOriginal File Name Searched:
Applicability-ROT-for-3-MW-Waste-Heat-Recovery-Organic-Rankine-Cycles.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)