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Title: ARID Raceway Temperature Model Evaluation

Abstract

The ARID (Algae Raceway Integrated Design) raceway temperature model, written in Visual Basic for Applications, calculates algae culture temperature in ARID and conventional raceways as a function of meteorological data from agricultural weather stations. The model is an atmospheric boundary layer model and uses energy balance terms from the Penman-Monteith equation. The original model used evapotranspiration, as calculated by the weather station, and assumed an average daily albedo. In this research, equations for albedo and for direct calculation of evaporation from atmospheric parameters were added to the ARID model. Albedo was calculated with the Fresnel equations. The Penman-Monteith model was adjusted for algae raceway evaporation rather than reference evapotranspiration. The new model components were calibrated with data from a 21-day algae growth experiment in the ARID raceway during winter 2011. The model was also adapted to model variable circulation times and heat transfer through a canal cover. In summary, this research improved and calibrated the ARID temperature model for future use.

Authors:
 [1];  [1];  [1];  [1]
  1. Univ. of Arizona, Tucson, AZ (United States)
Publication Date:
Research Org.:
Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1592741
Grant/Contract Number:  
EE0006269
Resource Type:
Accepted Manuscript
Journal Name:
Transactions of the ASABE
Additional Journal Information:
Journal Volume: 57; Journal Issue: 1; Journal ID: ISSN 2151-0032
Publisher:
American Society of Agricultural and Biological Engineers
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 59 BASIC BIOLOGICAL SCIENCES; 09 BIOMASS FUELS; Algae; ARID raceway; Conventional raceway; Open pond; Reflectance; Temperature model

Citation Formats

Khawam, George, Waller, Peter, Attallah, Said, and Ryan, Randy. ARID Raceway Temperature Model Evaluation. United States: N. p., 2014. Web. doi:10.13031/trans.57.10198.
Khawam, George, Waller, Peter, Attallah, Said, & Ryan, Randy. ARID Raceway Temperature Model Evaluation. United States. doi:10.13031/trans.57.10198.
Khawam, George, Waller, Peter, Attallah, Said, and Ryan, Randy. Fri . "ARID Raceway Temperature Model Evaluation". United States. doi:10.13031/trans.57.10198. https://www.osti.gov/servlets/purl/1592741.
@article{osti_1592741,
title = {ARID Raceway Temperature Model Evaluation},
author = {Khawam, George and Waller, Peter and Attallah, Said and Ryan, Randy},
abstractNote = {The ARID (Algae Raceway Integrated Design) raceway temperature model, written in Visual Basic for Applications, calculates algae culture temperature in ARID and conventional raceways as a function of meteorological data from agricultural weather stations. The model is an atmospheric boundary layer model and uses energy balance terms from the Penman-Monteith equation. The original model used evapotranspiration, as calculated by the weather station, and assumed an average daily albedo. In this research, equations for albedo and for direct calculation of evaporation from atmospheric parameters were added to the ARID model. Albedo was calculated with the Fresnel equations. The Penman-Monteith model was adjusted for algae raceway evaporation rather than reference evapotranspiration. The new model components were calibrated with data from a 21-day algae growth experiment in the ARID raceway during winter 2011. The model was also adapted to model variable circulation times and heat transfer through a canal cover. In summary, this research improved and calibrated the ARID temperature model for future use.},
doi = {10.13031/trans.57.10198},
journal = {Transactions of the ASABE},
number = 1,
volume = 57,
place = {United States},
year = {2014},
month = {3}
}

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Works referenced in this record:

A Comparison of Nannochloropsis salina Growth Performance in Two Outdoor Pond Designs: Conventional Raceways versus the ARID Pond with Superior Temperature Management
journal, January 2012

  • Crowe, Braden; Attalah, Said; Agrawal, Shweta
  • International Journal of Chemical Engineering, Vol. 2012
  • DOI: 10.1155/2012/920608