div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Use Vortex Tubes For Fuel-Free Thermal Energy Heating Sep 09 2002 · Created Date: 992002 12:07:55 PM src=https:reader034vdocumentsmxreader034viewer20220501145f4b3bcfc0b4de709e6e89bdhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv