mass flow


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to mass flow: Mass flow hypothesis

mass flow

an hypothesis to explain the movement of solutes in a plant by means of a hydrostatic pressure gradient. The idea is that in one part of the plant (the source) solute particles are actively secreted into sieve cells of PHLOEM, producing a high osmotic concentration which attracts water by OSMOSIS. In another part of the plant (the sink) solute particles are leaving the phloem, thus lowering the osmotic concentration which causes water to leave also. There is, therefore, a pressure gradient set up between the source (e.g. leaf) and the sink (e.g. root) and fluids flow from one to the other, down the gradient. See TRANSLOCATION (1).
Mentioned in ?
References in periodicals archive ?
The "The World Market for Mass Flow Controllers, 3rd Edition" report has been added to ResearchAndMarkets.com's offering.
At the same time, to work, both with the method of measuring mass (to calibrate mass flow meters) and with the method of measuring volume.
[ClickPress, Wed Feb 27 2019] The expanding database of Market Research Reports Search Engine (MRRSE) has been recently updated by the addition of a new study which is titled as " Mass Flow Controller Market Growth Factors Analyzed Until the End of 2026 ".
The enthalpy difference in area 1 at operating points with a large mass flow is composed only of the incidence losses on the blades and the first part of the skin friction loss.
All of the mass flow or pressure controller's data, ncluding: mass flow, volumetric flow, pressure, temperature, selected gas calibration, setpoint, and totalised flow can be output to a central PLC running a compatible automation protocol.
The usual map variables are pressure ratio [[PI].sub.c] = [p02/p01], efficiency [[eta].sub.c], corrected speed [N.sub.c] and corrected mass flow [[bar.W].sub.c].
Typical applications for these mass flow meters will include filling or dosing oils, solvents and chemicals and measuring adhesives or binding materials, coatings and hardeners, dyes, vitamins and other additives.
The mass flow rate can be reduced by 36% with vortex control under the same inlet and outlet conditions.
The move towards the compulsory implementation of mass flow meters, or MFMs, for marine fuel oil bunkering, the first of its kind worldwide, will transform the global maritime industry as bunker suppliers and customers increasingly opt for MFMs to do business.
Initially released in 2001, this compact thermal mass flow meter from Vogtlin Instruments has been completely re-engineered to operate on one single AA battery for up to 6 months, a micro-USB power supply or via a 12-30 VDC power supply.
Largo, Florida-based flow meter designer and maker Onicon Inc has acquired Monterey, California-based thermal mass flow meter developer Fox Thermal Instruments, Inc, the company said.
The world's leading mass flow excavation business, James Fisher Subsea Excavation -- part of James Fisher and Sons plc, has brought the world's most powerful tool to the market to support clients with large scale excavations.