A self-cooling Stirling cycle cooler (1). The cooler (1) includes a conduit (20) for transporting thermal energy from a first location to a second location. The conduit is a closed loop having first and second ends terminating in a first chamber (29). A pump (14) is mounted in the first chamber (29) for moving the heat energy therein from the first location to the second location. The pump (14) includes a piston (40) which reciprocates in the first chamber (29). A first valve (42) is provided fo...

A mechanically refrigerated chiller system for a process coolant has a process coolant circuit which includes a coolant reservoir with refrigerant evaporator coils in it. Coolant returns from the process to the reservoir through several and alternate paths. An additional coolant path is provided through a heat exchanger. An extra hot-gas line from the high pressure side of the refrigerant compressor is coupled through the heat exchanger to the refrigerant condenser. When the temperature of the c...

An air-cooled cooling apparatus for cooling a cooling liquid within a cooling pipe of a refrigeration machine comprising a cooling cycle including a coolant compressor, an air-cooled condenser, an expansion valve, and a cooler, thereby cooling liquid of the refrigeration machine. The apparatus also comprises an air-cooled heat exchanger, outdoor-temperature sensors and three-way valves for controlling the flow of the cooling liquid to be cooled. When the outdoor temperature is high, the cooling ...

An air conditioning system and method wherein a central pumping system circulates a heat-exchange liquid (which is water or a glycol solution or other solution called "water") through heating and cooling paths of a refrigeration system and then to and from air-treating units. The fans or blowers of the air-treating units are positioned upstream of the air cooling and heating coils so that the fan heat and pump heat are discharged through the fluid cooler system during cooling load operation, and...

A closed system and method of cooling and remote dispensing beverages (alcoholic or non-alcoholic) to a remote dispensing tower. The closed system employs a closed and sealed loop of continuously circulating coolant. The continuously circulating coolant is daisy chained through a bank of heat exchangers in the closed and sealed loop. Each heat exchanger flash chills a corresponding one beverage to be dispended at the remote dispensing tower via a primary trunk line. The primary trunk line commun...

An improved thermally responsive freeze actuator for operation of an air conditioning throttle valve between the evaporator and compressor to maintain the pressure and temperature of evaporator refrigerant above a freezing level. The improved actuator includes a rigid-walled tubular portion containing water and an attached axially extendable bellows portion. The water in the tubular portion is separated from the bellows portion by a deep cup shaped member or diaphragm of elastomeric material. Th...

An ice/beverage dispenser is characterized by an ice/beverage dispensing machine having an integral ice making capacity. An icemaker of the dispenser and the ice and beverage dispensing portion share an evaporator that that is utilized both for chilling beverage water for dispensing and for making ice. The evaporator is efficiently utilized in that one side of it is used for making ice and both sides of it are used for chilling water. The present invention uses a processor based control circuit ...

In a method and an X-ray diagnostic installation for storing X-ray images, during a pulsed transillumination, new image datasets are produced averaging a number of temporally successive X-ray image datasets and the new image datasets are stored.

To provide a radiation imaging method using a phase contrast method capable of imaging efficiently with high estimation accuracy of restoring phase. The radiation imaging method includes, the steps of: (a) sequentially detecting intensity of radiation transmitted through an object at plural distances from the object in first order by using radiation having a first wavelength to obtain a first group of image signals; (b) sequentially detecting intensity of radiation transmitted through the object...

Methods for projecting and backprojecting rays with respect to pixels/detector bins to attenuate/eliminate high-frequency artifacts, are disclosed. The first two methods are adaptations of pixel-driven and ray-driven linear interpolation techniques respectively. In these techniques, the window or shadow of each pixel/bin is dynamically adjusted and projected onto the detector bin/pixel to eliminate gaps between the shadows. This allows the effect of each pixel on a given detector bin (or vice ve...