Ken Gotberg Complements on exploring options. One review of water purification costs is:
Evaluating the costs of desalination and water transport Yuan Zhoua, Richard S.J. Tol December 9, 2004 https://www.fnu.zmaw.de/fileadmin/fnu-files/publication/working-papers/DesalinationFNU41_revised.pdf Encourage you to compare radiative cooling and water condensation vs deliquescent absorption, condensation & regeneration. See thesis by Torbjorn M.J. Nilsson Optical Scattering Properties of Pigmented Foils for Radiative Cooling and Water Condensation: Theory and Experiment Chalmers Tekniska Hogskola, Dept. Physics, Goteborg Sweden 1994 ISBN 91-7032-941-9 Bibliotekets Reproservice Goteborg 1994 "A 390 um thick foil with TiO2 and BaSO4 pigments was produced and was found to have a fairly high emittance in the thermal infrared; it was therefore used in outdoor experiments. During drought months in Tanzania, the foil condensed 1.19 litre/m2 in a semi-desert." See also: Radiative cooling during the day: simulations and experiments on pigmented polyethylene cover foils NILSSON T. M. J. <http://www.refdoc.fr/?traduire=en&FormRechercher=submit&FormRechercher_Txt_Recherche_name_attr=auteursNom:%20%28NILSSON%29> ; NIKLASSON G. A. <http://www.refdoc.fr/?traduire=en&FormRechercher=submit&FormRechercher_Txt_Recherche_name_attr=auteursNom:%20%28NIKLASSON%29> ; Solar energy materials and solar cells <http://www.refdoc.fr/?traduire=en&FormRechercher=submit&FormRechercher_Txt_Recherche_name_attr=listeTitreSerie:%20%28Solar%20energy%20materials%20and%20solar%20cells%29> *ISSN* 0927-0248 <http://www.refdoc.fr/?traduire=en&FormRechercher=submit&FormRechercher_Txt_Recherche_name_attr=identifiantsDoc:%20%280927-0248%29> 1995, vol. 37, n^o 1, pp. 93-118 (68 ref.) (Caution: In tropical areas, cloud cover would reduce the radiative cooling.) Regards David L. Hagen HagenDL {at} ASME.org On 8/1/2010 3:00 PM, [email protected] wrote: > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 31 Jul 2010 22:15:09 -0700 (PDT) > From: Ken Gotberg <[email protected]> > To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Subject: [Gasification] Can use some help with stoves > Message-ID: <[email protected]> > Content-Type: text/plain; charset=utf-8 > > . . . > > I can use help on a system I'm developing to take water out of the > air using a deliquescent salt that is subsequently boiled off where > the salt stays behind and the water is re-condensed and saved. I'm > using CaCl2 as the deliquescent salt and everything works > fine on getting water out of the air. It's the boiling side that I > need help with. > > Water takes on the order of 2.2 Mega Joules/liter to boil at 100 > degrees Celsius and more with the salt present. This mixture can take > up to 130 0C to boil and the options available to me as I > see them are: 1. rocket stove, 2. gasification stove, 3. charcoal > stove, 4. solar thermal concentrator, etc. The 130 0C is > no problem for the stoves, but I'm curious about what the maximum > efficiency of any of these is. . . . . . Ken Gotberg -- _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
