278results about How to "Change flow rate" patented technology

Methods and apparatuses for sorting and isolating individual microparticles (e.g., cells) by bulk sorting groups of microparticles into groups containing one or more microparticle having a desirable characteristic (e.g., a label such as a florescent label, shape, size, etc.), and then sorting the individual microparticles with this desired characteristic individual particles.

The present invention provides an apparatus and a method for fractionating gypsum slurry which can surely control the density of the gypsum slurry fractionated from the mixer (fractionated slurry), which can restrict change of the flow rate of the fractionated slurry, and which can reduce the consumption of foam or foaming agent. The fractionation apparatus (30) fractionates the gypsum slurry from a mixer (4) for mixing calcined gypsum and water. The mixer has a hollow connector section (50), which allows the gypsum slurry to flow from a mixing area inside of the mixer into a chute section (5), and the chute section (5) discharging the inflow of gypsum slurry through its slurry discharge port onto a gypsum board liner paper. The fractionation apparatus has a slurry fractionation port (33) opening to the chute section or the hollow connector section, and causes a part of the gypsum slurry in the chute or hollow connector section to be delivered to a slurry delivery conduit (11,13,19).

A cooling unit (10) comprising a first passageway (26) through which coolant fluid is pumped when the unit is in use, and a second passageway (43) through which coolant fluid is pumped when the unit is in use. Portions of the first and second passageways are thermally coupled to one another so as to constitute a heat exchanger (24). The coolant fluid which passes through the said second passageway (43) when the unit is in use is passed to at least one heat exchanger (142) associated with heat- generating electronic equipment or other equipment which is to be cooled. The unit (10) is provided with a temperature and humidity sensor or sensors (260 and 262) connected to a control processor (52) of the unit (10) and located in the space (100) occupied by such equipment when the unit (10) is in use to enable the control processor (52) to determine the ambient dew point of that space (100). The control processor (52) is connected to control operation of the unit (10) in dependence upon that ambient dew point. The unit (10) further comprises a variable control valve (36) or a variable pump in the said first passageway (26) connected to the control processor (52) to enable the latter to control operation of the unit in dependence upon the said ambient dew point. It does this by adjusting the variable control valve (36) or variable pump in the said first passageway (26) to alter the rate of flow of coolant therein, so as to reduce the likelihood of condensation occurring on or near such electronic equipment or other equipment when the unit is in use. Also, a method of cooling the air in a data centre (100) or other centre, room or space using such a cooling unit (10).

The invention relates to a flow guide plate of a fuel cell. The flow guide plate (1) is provided with a plurality of fluid channels (3); the single fluid channel is branched, diffused and converged, the width and depth of each section of the same fluid channel are changed, the flow velocity and pressure of the fluid are adjusted, the flowing quality is improved, the fluid is forced to flow along the fluid channel at a variable speed, and meanwhile, the fluid can enter a diffusion layer to form three-dimensional multi-layer flowing. Compared with the prior art, by changing the flow velocity andpressure of the fluid at each position point in the fluid channel, a reaction medium can be transferred more effectively, the generated water can be discharged more effectively, and the method has the advantages of improving the performance of a stack, improving the reaction efficiency, prolonging the service life of the stack and the like.