Abstract:
In order to overcome the limitations and problems that earlier apparatus and methods for determining physiological effects of heat flux with a cryogenic substance applied to an organism have experienced, it is proposed that the apparatus (10) comprises:- a heat flux sensor (12);- a cryogen delivery apparatus (16) spaced apart a distance (D1) from the heat flux sensor (12); and- at least one organism culture (28) supported on the heat flux sensor (12) in a path of delivery of the cryogenic substance from the cryogen delivery apparatus (16) to contact the at least one organism culture (28).The corresponding method for determining physiological effects of heat flux with a cryogenic substance applied to an organism comprises:- testing at least one organism culture (28) for heat flux with a cryogenic substance; and- establishing an amount of heat transfer required at the organism for achieving maximum destruction of said organism.
Abstract:
An apparatus for providing a liquid cryogen with pulsed flow includes a first tank 14 containing liquid cryogen; a second tank 16 containing gaseous cryogen under pressure, the second tank in fluid communication with the first tank and including an outlet; and a pair of valves including a first valve 70 disposed to alternate between interruption and continuance of the fluid communication between the first and second tanks, and a second valve 74 disposed for coaction up to 180 out-of-phase with the first valve to repetitively cycle between pressurizing and releasing pressure of the liquid cryogen for providing discrete pulses of the liquid cryogen from the outlet. A related method is also provided.
Abstract:
An apparatus for providing a liquid-gas entrained cryogen mixture onto a food product includes a first pipe through which is provided a flow of liquid cryogen; a second pipe through which is provided a flow of gaseous cryogen, the second pipe in fluid communication with the first pipe at a mixing region; and a pulsing valve disposed at an interior of the second pipe upstream of the mixing region, the pulsing valve adapted for releasing the gaseous cryogen into the liquid cryogen at select intervals of time to provide a pulsating flow of the liquid-gas entrained cryogen mixture downstream of the mixing region for contacting the food product. A related method is also provided.
Abstract:
Die Erfindung betrifft eine Gefriermaschine (150) zum Gefrieren von Proben, umfassend eine Gefriereinrichtung (140) zum Gefrieren einer in der Gefriermaschine (150) aufgenommenen Probe, einen Behälter (100) zur Aufnahme der gefrorenen Probe mit einem Reservoir (105) für flüssigen Stickstoff, und eine Transfervorrichtung zum Transferieren der gefrorenen Probe aus der Gefriereinrichtung (140) in den Behälter (100), wobei der Behälter (100) wenigstens zwei voneinander getrennte Aufnahmeeinrichtungen (104) für jeweils wenigstens eine gefrorene Probe aufweist, wobei eine Auswählvorrichtung zum Auswählen einer der Aufnahmeeinrichtungen (104) für eine in den Behälter (100) zu transferierende, gefrorene Probe vorgesehen ist, wobei die Gefriermaschine (150) dazu eingerichtet ist, den Transfer der gefrorenen Probe mittels der Transfervorrichtung in die ausgewählte Aufnahmeeinrichtung (104) des Behälters (100) durchzuführen, sowie ein Verfahren zum Transferieren von gefrorenen Proben in einen dafür vorgesehenen Behälter.
Abstract:
A cooling system (2) for an interior space of a vehicle comprises a main cooling system (4) coupled with an air inlet (6) for receiving air (10) and coupled with the interior space (12, 14, 16, 18, 20) for providing cooled air to the interior space (12, 14, 16, 18, 20), at least one air (8, 22, 24, 26) duct arranged between the air inlet (6) and the interior space (12, 14, 16, 18, 20), a reservoir (30) for liquid nitrogen having a nitrogen outlet (34) and a valve (36) arranged between the outlet (34) and an injection port (38) of the at least one air duct (8, 22, 24, 26). The reservoir (30) is couplable with the injection port (38) of the at least one air duct (8, 22, 24, 26) via the valve (36) on demand for evaporating nitrogen in the at least one air duct (8, 22, 24, 26). With the injection of liquid nitrogen the main cooling system (4) is supported in case it is not able to provide a sufficient cooling power.
Abstract:
Cooling of a meter by liquid flowing in a flow that is reverse from dispensing flow is described. A plurality of tubes is configured to transport a plurality of fluids comprising a first fluid and a second fluid. Dispense valves attached to corresponding tubes are configured to open when the first fluid is dispensed from a pump to a first outlet. Recirculation valves attached to respective tubes are configured to open when the second fluid is transported from the pump to a second outlet. A meter attached to a tube of the plurality of tubes is configured to measure properties of a fluid when the fluid flows through the tube, wherein the fluid is one of the first fluid and the second fluid. The meter is configured to sense reverse flow when the second fluid flows from the outlet section to the inlet section.
Abstract:
A blanket (12) for cryogenically cooling at least a portion of a workpiece (10) is provided. The blanket includes a body having an interior surface (14) configured to face the workpiece. The blanket also includes a plurality of nozzles (16) located on the interior surface of the body. The blanket further includes one or more tubes (20) configured to deliver cryogenic liquid (18) to the plurality of nozzles for spraying upon at least a portion of the workpiece. A method and system for cryogenically cooling at least a portion of a workpiece utilizing a blanket are also provided.
Abstract:
An impingement plate atomizer apparatus includes a longitudinal member having an upper surface sized and shaped to receive a liquid cryogen thereon, a lower surface opposite to the upper surface, and at least one hole extending through the longitudinal member; and an ultrasonic transducer in contact with the longitudinal member for providing ultrasonic energy thereto for atomizing the liquid cryogen at the upper surface into a cryogen fog.
Abstract:
The present invention relates to a pump (15) for pumping a coolant (9) within a Dewar vessel (1) and to a corresponding Dewar vessel (1) for storing samples in a coolant (9). The Dewar vessel (1) comprises a thermally insulated reservoir (3) for the coolant (9) and a sample vessel (11) provided separately and arranged in the thermally insulated reservoir (3). The reservoir (3) is connected to the sample vessel (11) in such a way that the level of coolant (9) is constant in the sample vessel (11). Pump (15) may help in keeping the level of coolant (9) in the sample vessel (11) constant. For this purpose the pump (15) comprises a chamber (17) with an inlet (19) and an outlet (21), a closing element (23) and a pressure increasing device (25). Therein, the inlet (19) is connectable to the reservoir (3) and the outlet (21) is connectable to a sample vessel (11) of the Dewar vessel (1). The chamber (17) is adapted to fill with coolant (9) through the inlet (19) by gravity and the closing element (23) is adapted to automatically close the chamber (17) when it is full of coolant (9). The pressure increasing device (25) is adapted to increase the pressure within the chamber (17), after the chamber (17) is closed, until the coolant (9) is released through the outlet (21).