Abstract: A refrigeration system that induces lubricant-liquid refrigerant mixture flow from a flooded or falling film evaporator by means of the lubricant-liquid refrigerant mixture flow adsorbing heat from an electronic component.

Abstract: A refrigeration system that induces lubricant-liquid refrigerant mixture flow from a flooded or falling film evaporator by means of the lubricant-liquid refrigerant mixture flow adsorbing heat from an electronic component.

Abstract: A falling film evaporator for use in a vapor compression refrigeration chiller preferably employs a two-phase refrigerant distributor that overlies the tube bundle in the evaporator shell. The tube bundle defines at least one vapor lane which facilitates the conduct of refrigerant vapor from the interior of the tube bundle to the exterior thereof in a manner which does not substantially affect the vertically downward flow of liquid refrigerant through the tube bundle and across the vapor lane.

Abstract: Two variable position supply air valves, one for modulating warm airflow to a comfort zone and the other for modulating cool airflow, each have a constant intermediate open position to provide at least a desired minimum airflow, and both can be controlled so that only one valve is open at any one time to minimize any mixing of the airstreams. Potentiometers are used to adjust the intermediate open position of each valve and to adjust at least one valve's relationship of valve opening to zone temperature.

Abstract: A valve assembly is disclosed for use in an air distribution system which includes a plenum chamber (2a, b) having an inlet opening (4) and an outlet (5). Conduit means are provided for admitting air to the plenum chamber through the inlet opening and include a generally cylindrical sleeve (6) having at least a portion thereof disposed within the plenum chamber, which portion includes aperture means (7) passing radially therethrough. A generally cylindrical valve member (9) is disposed within the sleeve and includes an axially extending portion for selectively blocking off the aforesaid aperture means. The valve member (9) is supported for axial movement between a first, closed, and a second, open position and may also be positioned at any point therebetween. Due to a slight clearance between the valve member (9) and the inner periphery of sleeve (6), a small amount of air flow is permitted to pass therebetween, whereby an axial force is imposed upon the valve member.