residence time

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residence time

[′rez·ə·dəns ‚tīm]
(chemical engineering)
The average length of time a particle of reactant spends within a process vessel or in contact with a catalyst.
(nucleonics)
The time during which radioactive material remains in the atmosphere following the detonation of a nuclear explosive; it is usually expressed as a half-time, since the time for all material to leave the atmosphere is not well known.
References in periodicals archive ?
The principle of the measurement of the residence time distribution was explained in details in a previous article [20].
While the dryer benefits from a simple design, it can require long residence times, that leads to long delay times between the analytical measurement and potential process controls or adjustments.
The effect of residence time on the products yield and properties of shale oil and gases has been investigated.
If carbon has a short residence time in soils, global warming can't speed up the rates too much of exporting carbon to the atmosphere," Galy said.
I compare the results with those of other species in Table 1 and discuss the risks of predation and the role of camouflage in prolonging web site residence times.
Moreover, estimates of in-stream residence time for CWD have rarely been reported for southern Appalachian streams.
A 120 s residence time twin screw extruder run was not accomplished on either of the blend families shown in figure 4.
stc]) = residence time in a single optical pumping cell (storage cell)
The equation, Criss says, gives an accurate interpretation of residence time in a groundwater system and incorporates the impact of more recent rainfall on the isotopic balance.
The go-ahead for a long-term agreement to provide housings for computer processing housings hinged on reduction of Intesys melt residence time on the four, 400-ton injection molding machines slated to be used.
Residence time in the downcomer is about 10 sec and overall cell residence time about 2 min, but retention time is not a design factor.