Figure 4.8. Observed and predicted temperatures for fans and misters using solar
radiation averaged over June 2011 and using the solar radiation from the same day the
observed values were taken.
Influence of Flue Gas
Based on the validation data, the temperature of the PBR with the introduction of the flue
gas was determined for the fans’ case. The base case was based on the values expected,
based on original design plans for the algae based system for CO2 mitigation at a
Kentucky coal-fired plant. The temperature of the flue gas was assumed to be 316°C
(600°F), which would be the temperature after moderate cooling measures. The flow rate
of the gas inlet was assumed to be 10%. These results are shown in Figure 4.9, where the
base case is too hot for nine hours of the day. By varying the inlet temperature of the flue
gas and flue gas flow rate, the temperature of the PBRs can be kept under the upper limit
of 38.75°C. For example, by using either 10% flue gas at 149°C or 5% flue gas at 316°C,
the temperature of the PBRs is below the upper limit.