Frictional losses in shaft bearings

Aleksandrov, I. K.; Rakov, Vyacheslav

doi:10.3103/s1068798x12040041

Cited by 1 publication

(1 citation statement)

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“…Unbalance and vibration in aerator driver shafts observed at the farms would further increase energy loss (Estupinan, Espinoza, & Fuentes, 2008; Bulsara, Hingu, & Vaghasiya, 2016). Observed misalignment of aerator shafts on their supports because of instability of floats would cause energy loss (Aleksandrov & Rakov, 2012; Pietrowski, 2006). The actual drivetrain efficiency of farm‐made, long‐arm aerators would be difficult to measure, and each would likely have a different efficiency.…”

Section: Discussionmentioning

confidence: 99%

Aerator energy use in shrimp farming and means for improvement

Boyd

McNevin

2020

J World Aquaculture Soc

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Estimates of aeration energy use in shrimp farming varied from 11.4 to 41.6 GJ/t shrimp (average = 19.8 GJ/t). Several opportunities for reducing energy use in aeration are available. Many farms adopt an excessive yield to installed aeration capacity ratio. Moreover, the proportion of installed aerator capacity in use and duration of aerator operation per day are often more than necessary during the initial two-thirds of grow-out, because adjustment is not made for the quantity of shrimp biomass. Farm-made, long-arm aerators used in Asia have several features leading to energy inefficiency and could be replaced by more efficient factorymade, long-arm aerators. Asian aquaculture aerator manufacturers should redesign aerators to include design features shown in research to improve efficiency. Dissolved oxygen concentration monitoring essential for verification of aeration performance is seldom performed by shrimp farmers. With good aeration technique, energy use for aeration should not exceed 10-15 GJ/t shrimp.

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Section: Discussionmentioning

confidence: 99%