Vacuum Tube Paper Thermomax（真空管纸Thermomax）.pdf

Vacuum Tube Liquid-Vapor (Heat-Pipe) Collectors Dr. F. Mahjouri Thermo Technologies 5560 Sterrett Place, Suite 115 Columbia, Maryland 21044 WWW.THERMOTECHS.COM e-mail: mahjouri@ ABSTRACT The high temperature operation of Evacuated Heat Pipe condenser is constrained. Secondly, the condensed heat transfer Tubes (EHPT) and their very low radiant heat losses make fluid is partially captured in the condenser. As a result, the them ideal for solar water heating, solar space heating, amount of effective heat transfer fluid inside the heat pipe is desiccant air conditioning, thermal driven cooling and proportionally reduced. Thus this thermodynamic valve controls industrial process heating applications. The tubular, iron- the operating temperature at the collector level. free cover glass tube and vacuum within protect the absorber coating and all structure materials from corrosion and adverse weather conditions. The vacuum tube envelope 1. HEAT PIPE TECHNOLOGY minimizes heat loss and ensures high collector durability and steady performance. The basic heat pipe is a closed container consisting of a capillary wick structure and a small amount of vaporizable fluid. The heart of the EHPT is a heat pipe. The heat pipe is an evaporating-condensing device for rapid heat transfer. The latent heat of vaporization is transferred by means