Abstract: Methods and systems for combination hybrid chiller and air handler for use with data centers. A method to control capacity of two chillers in part load conditions includes forming a cascade system by connecting a first chiller and a second chiller in series. The first chiller includes a first compressor and the second chiller includes a second compressor. The method further includes modulating a capacity of the first chiller, a capacity of the second chiller, or both to control a required supply fluid temperature. In another embodiment, a method to increase a supply cooling fluid temperature of a cascade chiller system close coupled to air handlers includes monitoring positions of control valves on coils of air handlers close coupled connected to the cascade chiller system and increasing a supply cooling fluid temperature of the cascade chiller system as a function of an opening of at least one of the control valves.

Abstract: A system includes a stacked enclosure comprising multiple structural modules arranged in a vertically oriented stack. Each structural module is disposed at a different vertical level, and each structural module has a substantially same footprint. Each structural module is configured to house support equipment for a data center. The system also includes one or more interstitial layers disposed between adjacent structural modules.

Abstract: A control and pressure relief valve for relieving pressure from an automotive vehicle interior to an atmospheric pressure outside the vehicle interior in accordance with the present invention includes a valve mounting location having an inlet in fluid communication with the vehicle interior and an outlet selectively in fluid communication with the atmospheric pressure. At least one relief valve mounted on the valve mounting location allows air to flow from the vehicle interior to atmospheric pressure when the air pressure in the vehicle interior exceeds a first predetermined pressure value that is greater than the atmospheric pressure. At least one control valve mounted on the valve mounting location allows air to flow from the vehicle interior to the atmospheric pressure when an air pressure in the vehicle interior exceeds a second predetermined pressure value that is greater than the atmospheric pressure and less than the first predetermined pressure value.

Abstract: A system is disclosed which includes a transmissive liquid crystal display of the type which may display a line of characters or symbols at a time, or which may display only a raster line in combination with an energy source and a controllable and transportable medium. The medium is exposed by energy from the source of energy passing through the liquid crystal display which acts as a mask for the source of energy. The liquid crystal display may be set by electrical signals manually generated such as by a keyboard or by signals automatically generated by use of other electronic equipment. In one alternate embodiment of the invention a large area two-dimensional liquid crystal display is used as a mask. In another embodiment of the invention a liquid crystal display is used as a mask for the purpose of exposing a photoconductive drum of the type used in xerography. A reflective liquid crystal display is disclosed in yet another embodiment of the invention.