Abstract: An air handling system for heating, ventilating and air-conditioning systems to provide a variable air flow between an air treatment section and an air bypass section includes selectively sliding panels to vary the air flow between the air treatment section and the bypass section. Positioning of the panels can direct the flow of incoming air to be conditioned from all incoming air flowing through the air treatment section to all incoming air flowing through the bypass section and a mixture of incoming air flowing through the air treatment section and the bypass section.

Abstract: A gas-liquid contact body for use in a gas-liquid contact apparatus is disclosed which is formed of a plurality of facially opposed corrugated sheets with the corrugations in alternate sheets being disposed in parallel to form a plurality of criss-crossing channels for gas and liquid. The contact body has an air inlet side including an air inlet portion which is coated with a water-impermeable hydrophilic material containing an algicide.

Abstract: An improved contact body for use in a liquid gas contact apparatus formed of first and second sets of corrugated sheet material arranged with the sheets of the first set disposed alternately with the sheets of the second set. The corrugations of the sheets define passageways which penetrate the contact body from edge to edge with both vertical and horizontal components of direction. The passageways are simultaneously passed by a flow of gas in one direction and liquid in the other direction in either counterflow or cross-flow in the contact apparatus. The corrugations of the first set of sheets cross the corrugations of the second set of sheets at an acute angle in the range of 15.degree. to 80.degree.. Corrugations of the first set of sheets have a greater inclination to the horizontal plane of the contact apparatus than the corrugations of the second set of sheets and the corrugations of the first set of sheets have a smaller amplitude dimension than the corrugations of the second set of sheets.

Abstract: A gas and liquid contact apparatus in which gas and liquid flow in cross-flow relationship to one another is disclosed. The apparatus includes a contact body formed of a plurality of sheets of corrugated material having first and second opposed edges with corrugations formed in the sheets extending at an angle to the edges and abutting each other at points in adjacent sheets to form through-passing channels for gas and liquid. The first and second edges of the sheets define gas inlet and outlet edges in the contact body. The gas inlet edge has a plurality of rows of generally channel-shaped notches formed therein so that liquid flowing through the contact body will agglomerate at the notches. The agglomerated liquid will flow downwardly along the gas inlet edge of the contact body to clean the sheet at that gas inlet edge.

Abstract: A gas and liquid contact body for use in a gas and liquid contact apparatus in which gas and liquid flow in cross flow relationship to one another is disclosed. The contact body is formed of a plurality of sheets of corrugated material having first and second opposed edges with corrugations formed in the sheets extending at an angle to the edges and abutting each other at points in adjacent sheets to form through-passing channels for gas and liquid. The first and second edges of the sheets define gas inlet and outlet edges in the contact body. Either the gas inlet edge or the gas outlet edge, or both, have a plurality of generally channel shaped notches formed therein so that liquid flowing through the contact body will agglomerate at the notches. The agglomerated liquid will flow downwardly along the gas inlet edge of the contact body to clean the sheet at that gas inlet edge.