Osmotic heat engine

文件类型：PDF文档
文件大小：1258K
(57) Abstract : A method of converting thermal energy into mechanical work that uses a semipermeable membrane to convert osmotic pressure into electrical power. A closed cycle pressure-retarded osmosis (PRO) process known as an osmotic heat engine (OHE) uses a concentrated ammonia-carbon dioxide draw solution to create high osmotic pressures which generate water flux ECP through a semi-permeable membrane against a hydraulic pressure gradient. The depressurization of the increased draw solution volume in a turbine produces electrical power. The process is Draw maintained in steady state operation through the separation of the diluted draw solution into a re-concentrated draw solution and deionized water working fluid, both for reuse in the osmotic heat engine. Hydraulic pressure 4-- PRO mode FIGURE 1 IIIllllllllllllIMllllllllllllllllllllllllIMlllllllllIMllllllllIMIIIlllllllll European (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, Published : FR, GB, GR, HU, 1E, IS, IT, LT, LU, LV, MC, MT, NL, PL, -- with international search report PT, RO, SE, SI, SK, TR), OAPI (BF, B J, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Declaration under Rule 4.17 : (88) Date of publication of the international search report : -- of inventorship (Rule 4.17(iv)) 21 August 2008