A compact adsorption chiller applied in the automobile with the vapor valve is proposed. • The vapor valve is controlled by the pressure difference at both sides.

Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface .

Adsorption process is usually studied through graphs know as adsorption isotherm. A graph between the amounts of adsorbate and pressure at const temp.