Design procedure for hooded surface oxygen absorption systems
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Abstract
A design procedure addressing effluent total dissolved gas pressure limits along with standard performance indicators such as oxygen absorption efficiency (kg absorbed/kg applied), and transfer efficiency (kg/kW.h), is presented for surface agitation equipment operating in an oxygen-enriched atmosphere. Application of this contactor type in closed culture systems is attractive given its insensitivity to biological fouling and ability to operate without the need for a significant hydraulic gradient. Performance algorithms were developed through application of chemical reactor theory, Henry's Law and the Ideal Gas Law. In the analysis, gas and liquid phases were treated as being homogeneous. The design steps presented are unique in that required mass transfer coefficients (KLa), operating pressures (CP), and oxygen feed rates (G/L) are calculated for target changes in both dissolved oxygen and nitrogen without the use of iterative numerical procedures. A second calculation sequence establishes the sensitivity of system performance to changes in G/L when CP and KLa are known.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Design procedure for hooded surface oxygen absorption systems |
| Series title | Journal of the World Aquaculture Society |
| DOI | 10.1111/j.1749-7345.1995.tb00245.x |
| Volume | 26 |
| Issue | 2 |
| Year Published | 1995 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Leetown Science Center |
| Description | 12 pp. |
| First page | 200 |
| Last page | 211 |
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