PDF Publication Title:
Text from PDF Page: 004
Figure 3 shows the TG profiles for the desorption of water from LiNaX, as an example of a common zeolite with a high storage density and a high temperature lift, and the microporous aluminophosphates AlPO4-17, AlPO4-18 and the SAPO-34. As can be seen, at about 400 K the main part of the water is removed from the AlPO4 and SAPO samples different to the zeolite. The first derivative of the curves shows that the main part of the water from AlPO4-5 is desorbed at about 370 K, from AlPO4-17 at 380 K and from AlPO4-18 at about 390 K. Incorporation of Si into the AlPO4-structure increases the maximum of the desorption curve to about 400 K (SAPO-34) and the shape of the curve becomes more similar to the X zeolite. For the LiNaX the main peak is shifted to about 450 K and it takes another 200 K to achieve complete desorption. So, step by step modification of the molecular sieves as storage material seams to be possible to optimize their desorption properties with respect to the temperature level available for the charging of the storage. The position of the water isotherms of the low silica X zeolites on one hand and the SAPO-34 on the other hand support the findings given above (see Figure 4). The isotherms of LiLSX and NaLSX are, compared to the SAPO, shifted by two orders of magnitude towards lower equilibrium pressure. Also the shape of the isotherm, which rise more steeply between 3-5 mbar due to a hydratation of the SAPO (see Jänchen et al., 1993), differs from the common zeolites. Accordingly, the differential molar heats of sorption decreases from LiLSX (100-70 kJ/mol) to SAPO-34 (90-65 kJ/mol) and finally to the CaCl2/attapulgite system (70-50 kJ/mol water) significantly. Further, Figure 4 compares the isotherms of the zeolite-like materials with those of the impregnated active carbon and the attapulgite. Whereas the isotherm of the hydratation of the CaCl2 in the microporous active carbon is comparable with the hydratation of the SAPO, the CaCl2/attapulgite isotherm is again shifted towards higher equilibrium pressure in accordance with the decreasing heat of sorption. Obviously, there is an influence of the pore architecture on the hydatation process of the hygroscopic salt. To discuss this phenomenon in more detail Figure 5 and Table 1 summarize the results of the TG/DSC measurements for the impregnated storage materials with different pore size distributions. Figure 4 Adsorption isotherms of water at 313 K for LiLSX, NaLSX and SAPO-34 (molecular sieves, solid lines) as well as active carbon/CaCl2 and the CaCl2 impregnated attapulgite (dashed lines), from left to right. 7th Workshop of IEA/ECES Annex 17, 8-12 October 2004, Beijing, PR of China 4PDF Image | STORAGE OF LOW TEMPERATURE HEAT BY ZEOLITES
PDF Search Title:
STORAGE OF LOW TEMPERATURE HEAT BY ZEOLITESOriginal File Name Searched:
download2.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 |