Recirculation


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.
Related to Recirculation: enterohepatic recirculation

Recirculation

 

the repeated return of all or part of a stream of gas, liquid, or solid substance to, for example, a technological process, plant, or apparatus. Recirculation is used for various purposes, such as the regulation of component concentration in mixtures and temperature in heat exchangers. In chemical engineering, the yield of the final product can often be increased by a recirculation of the raw materials.

REFERENCES

Nagiev, M. F. Teoriia retsirkuliatsii i povyshenie optimal’nosti khimicheskikh protsessov. Moscow, 1970.
Kasatkin, A. G. Osnovnye protsessy i apparaty khimicheskoi tekhnologii, 8th ed. Moscow, 1971.
References in periodicals archive ?
The California Code of Regulations also requires the recirculation pump to be in operation whenever the public pool is available for use (6).
The 800 K experimental PIV results are shown to follow similar phases as the 573 K results, however, a major difference is that the recirculation velocity is quite low and the axial velocity becomes positive very quickly.
For the DFT system the reduction of the frequency of recirculation of the nutrient solution impaired the dry matter production of lettuce 'Taina' when using brackish water.
In air performance modeling, it is picked up as a form of recirculation.
For additional protection of personnel inside the room, the CleanZone Recirculation System lets you adjust the percentage of air recirculated into the containment room.
We asked the boiler operator to close the isolation valves in the recirculation line on both pumps.
Let us examine the velocity and recirculation issue more closely.
The supply flow decreased and the supply and recirculation pressures increased because both domestic cold water (makeup water) and domestic hot water had little usage or consumption.
As the name suggests, the EGR valve regulates the recirculation of exhaust into the engine.
However this would require even more recirculation, boosting CO2 by 5%- 6%;
Volvo Trucks North America recently announced that its 2007 Volvo D11, D13 and D16 model engines will employ high-efficiency cooled exhaust gas recirculation (EGR) in combination with a diesel particulate filter (DPF) to reduce emissions of nitrogen oxide (NOx) by 50 percent and particulate matter (PM) by 90 percent from current levels to help meet new environmental standards slated for introduction next year.
Better airflow in the new design allowed elimination of an exhaust-gas recirculation cooler.