Energy productivity of the high velocity algae raceway integrated design (ARID-HV)

Said Attalah, Peter M Waller, George Khawam, Randy D Ryan, Michael H. Huesemann

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The original Algae Raceway Integrated Design (ARID) raceway was an effective method to increase algae culture temperature in open raceways. However, the energy input was high and flow mixing was poor. Thus, the High Velocity Algae Raceway Integrated Design (ARID-HV) raceway was developed to reduce energy input requirements and improve flow mixing in a serpentine flow path. A prototype ARID-HV system was installed in Tucson, Arizona. Based on algae growth simulation and hydraulic analysis, an optimal ARID-HV raceway was designed, and the electrical energy input requirement (kWh ha<sup>-1</sup> d<sup>-1</sup>) was calculated. An algae growth model was used to compare the productivity of ARID- HV and conventional raceways. The model uses a pond surface energy balance to calculate water temperature as a function of environmental parameters. Algae growth and biomass loss are calculated based on rate constants during day and night, respectively. A 10 year simulation of DOE strain 1412 (Chlorella sorokiniana) showed that the ARID-HV raceway had significantly higher production than a conventional raceway for all months of the year in Tucson, Arizona. It should be noted that this difference is species and climate specific and is not observed in other climates and with other algae species. The algae growth model results and electrical energy input evaluation were used to compare the energy productivity (algae production rate/energy input) of the ARID-HV and conventional raceways for Chlorella sorokiniana in Tucson, Arizona. The energy productivity of the ARID-HV raceway was significantly greater than the energy productivity of a conventional raceway for all months of the year.

Original languageEnglish (US)
Pages (from-to)365-375
Number of pages11
JournalApplied Engineering in Agriculture
Volume31
Issue number3
DOIs
StatePublished - 2015

Fingerprint

Algae
Productivity
Ponds
Energy balance
Interfacial energy
Rate constants

Keywords

  • Algae
  • ARID
  • ARID-HV
  • Chlorella
  • Energy
  • Pumps
  • Raceway
  • Simulation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Energy productivity of the high velocity algae raceway integrated design (ARID-HV). / Attalah, Said; Waller, Peter M; Khawam, George; Ryan, Randy D; Huesemann, Michael H.

In: Applied Engineering in Agriculture, Vol. 31, No. 3, 2015, p. 365-375.

Research output: Contribution to journalArticle

Attalah, Said ; Waller, Peter M ; Khawam, George ; Ryan, Randy D ; Huesemann, Michael H. / Energy productivity of the high velocity algae raceway integrated design (ARID-HV). In: Applied Engineering in Agriculture. 2015 ; Vol. 31, No. 3. pp. 365-375.
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