Calculation of the Average Irradiance and the Microalgae Growth for a Year at CUET, Bangladesh

Khanam, Ismot Ara; Deb, Ujjwal Kumar

doi:10.4236/ajcm.2016.63024

Cited by 9 publications

(4 citation statements)

References 13 publications

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“…al. [3] has given an average data of solar irradiance for 12 months of a year. So in the future, we would extend our work by applying the average irradiance for a month in a year as controlling parameter to observe the growth of microalgae cells for a large scale outdoor culture.…”

Section: Discussionmentioning

confidence: 99%

“…To overcome this problem plant based biofuels has become a potential resource which is carbon neutral and can replace petro based fuel. Even though biofuel production from crops still costly compared to fossil fuel as they require large amount of arable land [3]. So a new feedstock is required to mitigate the global demand and produce the biofuel commercially.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Irradiance Related Temperature on Microalgae Growth in a Tubular Photo Bioreactor for Cleaner Energy

Deb¹,

Shahriar²,

Bhowmik³

et al. 2017

AJCM

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In microalgae based biofuel technology, the light is one of the important factors for the proper growth of microalgae cells as microalgae is a photosynthetic microorganism. For a large scale outdoor culture the irradiance of sunlight and associated temperature is also need to consider. In this study aims to present computational model of microalgae growth taking effect of solar irradiance and corresponding temperature in a tubular photo bioreactor for an outdoor culture system. We consider the transient behavior of temperature inside the photo bioreactor for a microalgae culture. The optimum range of temperature for outdoor cultivation of microalgae is about 22˚C -27˚C and out of this range the microalgae cell growth inhibits. Many correlations have already been established to investigate the algal productivity based on the dynamic conditions of temperature in case of full scale outdoor cultivation. However, none of them are validated yet numerically considering the model as a function of weather conditions, operational behavior and design criteria. A tubular photobioreactor (PBR) with length 20.5 m and radius 0.05 m has taken account as a simulation model. The PBR is horizontally placed as temperature variations can be observed with greater accuracy. As the solar irradiance varies at any geographic latitude for a year and so thus temperature, equations and parameters are established relating the irradiance with the temperature to simulate the effect. We observed some significant effects of temperature on the growth of microalgae. Moreover, for the maximum growth of the cells we should control the surrounding temperature.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Irradiance Related Temperature on Microalgae Growth in a Tubular Photo Bioreactor for Cleaner Energy

Deb¹,

Shahriar²,

Bhowmik³

et al. 2017

AJCM

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show abstract

“…(3) Where Ф is latitude and δ represents the declination angle (δ) represents the angle between a line passing from the center of the sun to the center of the earth and the line's projection upon the equatorial plane of the earth. Declination angle varies from 23.45 degrees to -23.45 degrees can calculation using equation (4) [10], as shown in figure (8). (4) where DOY represents the (Day of Year)…”

Section: Estimation Of Ddl (Duration Day Length)mentioning

confidence: 99%

Air Temperature Modelling Depended on Remote Sensing Techniques

Mohammed¹,

AL-Anbari²,

Jasim³

2020

ETJ

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Air temperature (T air) near the land surface is a fundamental descriptor of physical environmental conditions and one of the most widely used climatic variables in global change studies. In this study, the researcher trying to suggest a model for estimating air temperature in summer season for any region through integrating of Iraqi Agrometeorological network daily (T air) with the moderate resolution imaging spectroradiometer (MODIS) land surface temperature (LST), Duration Day Length (DDL) and Digital Elevation Model (DEM). In this model, using satellite images for the study area and data of air temperature for four weather stations located in Babylon governorate from 1- June to 30- September on year 2017 for modeling and accuracy assessment air temperature estimation. The standard error of this model is 1.72887° C, and the correlation equal to 0.69698.

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“…They require small cultivable area, but the disadvantages are complicated mechanism to construct, operational cost and investment is high. Open pond facilitates mass cultivation of microalgae with cheap investment and operational expenses compared to closed system [8]. Between them the open pond systems are easy to construct and capital expense is low [9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Flow Dynamics for a Microalgae Suspension in an Open Pond System

Singha¹,

Deb²,

Shahriar³

2017

AJCM

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In the microalgae based biofuel technology, two main cultivation methods are available such as the Open pond system and the Closed photo bioreactor (PBR). The primary advantages of utilizing open raceway ponds are low production and maintenance cost. Though the open raceway ponds have been adjudged potentially cost effective, so many surrounding issues are involved to produce microalgae at a large scale that could make microalgae fuel cost competitive with the conventional petro oil. Many researchers have been studied so far to increase the efficiency of the cultivation methods without providing a proper mathematical model of flow dynamics inside the open raceway ponds. This paper presents a mathematical model to analyze the flow behavior of an open pond culture focusing the mixing factors by using a paddlewheel while the paddlewheel have its own unique dynamic characteristics. From our simulation we observed that the paddlewheel plays a vital role in mixing and the growth of microalgae. The velocity profiles, shear stress distributions are also studied at different parts of an open pond culture for a microalgae suspension.

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Calculation of the Average Irradiance and the Microalgae Growth for a Year at CUET, Bangladesh

Cited by 9 publications

References 13 publications

The Effect of Irradiance Related Temperature on Microalgae Growth in a Tubular Photo Bioreactor for Cleaner Energy

The Effect of Irradiance Related Temperature on Microalgae Growth in a Tubular Photo Bioreactor for Cleaner Energy

Air Temperature Modelling Depended on Remote Sensing Techniques

Investigation of Flow Dynamics for a Microalgae Suspension in an Open Pond System

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