Adsorbents for heat pumps and adsorption refrigerators
Патенты
| Язык: |
Итальянский |
| Тип: |
Патент на изобретение |
| Номер (11) |
IT 1306893 B1 |
| Номер заявки (21): |
IT 1999-RM383 |
| Дата подачи заявки (22): |
11 июн. 1999 г. |
| Дата начала отсчета срока действия патента (24): |
|
| Дата публикации патента (44,45,46): |
11 окт. 2001 г. |
| Дата публикации заявки (43): |
|
The adsorbents having a composite structure include ≥1 porous solid matrix and ≥1 hygroscopic substance. The solid matrix is selected from a group contg. silica gel, Al2O3, polymers, activated C, porous metals, and clay minerals with an expanded structure. The hygroscopic substance is an inorg. salt selected from a group contg. CaCl2, LiBr, LiCl, MgCl2, LiOH, Ca(OH)2, and Mg(OH)2. The pore size of the solid matrix is 3-20 nm. A method for prepn. of the adsorbents involves (1) prepn. of a 30-60 wt.% aq. soln. of the hygroscopic substance and (2) impregnation of the solid matrix to fill the pores. The adsorbents are suitable for heat pumps and adsorption refrigerators.