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116. Techno-Economic Assessment of a Biomass-Based Cogeneration Plant with CO2 Capture and Storage

Author

Uddin, N. and Uddin, N.

Abstract

Reduction of CO2 emissions from energy systems could be achieved through: CO2 capture and storage, energy savings, fuel switching among fossil fuels, increased use of renewable energy sources, and nuclear power. In addition, atmospheric CO2 reduction could also be achieved through increasing the carbon stock in soils and standing biomass. The CO2 capture and storage option for mitigating CO2 emissions from biomass-based cogeneration plants, considering critical aspects such future development of technologies, economies of scale. carbon price, site-specific analysis, and future energy systems has received little attention in scientific studies. With the overall objective of improved understanding of the potential scope for its large-scale implementation, a techno-economic assessment of biomass-based cogeneration plants with CO2 capture and storage was carried out. Most of the above-mentioned critical aspects have been considered for the techno-economic assessment of cogeneration plants with CO2 capture and storage technology. The results show the optimal scale of the conversion systems with respect to cost of electricity (COE). The optimal size for steam turbine-based cogeneration (CHP-ST) technologies without CO2 capture lies in the range 98-106 MWe (COE is 5.7 USD/MWh) when fueled by forest/logging residues, but the optimal size increases to 200-227 MWe for integrated gasification combined cycle based cogeneration (CHP-IGCC) (COE is 16.73 USD/MWh). The optimal size increases considerably to 249-288 MWe (COE 15.70 USD/MWh) for Salix fueled CHP-ST technology without CO2 capture and 441-504 MWe (COE 27.52 USD/MWh) for CHP-IGCC technology. With the additional feature of CO2 capture, transport, and storage (here we assume 100 km CO2 transport distance from the plant site) the unit capital cost for CHP-ST and CHP-IGCC technology increases around 70 and 30 percent, respectively. If one considers revenues from trading emission quotas earned through negative emissions one c

Published
2004

130. Occurrence of Infected Amoebae in Cooling Towers Compared with Natural Aquatic Environments: Implications for Emerging Pathogens

Author

Berk, S. G., primary, Gunderson, J. H., additional, Newsome, A. L., additional, Farone, A. L., additional, Hayes, B. J., additional, Redding, K. S., additional, Uddin, N., additional, Williams, E. L., additional, Johnson, R. A., additional, Farsian, M., additional, Reid, A., additional, Skimmyhorn, J., additional, and Farone, M. B., additional

Published
2006
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141. A Development of Web Application for Hydroponic Monitoring Systems

Author

Hermawan Hendi, Uddin Nur, and Darajat Teddy Mohamad

Subjects
Environmental sciences, GE1-350
Abstract

A development of web application for a hydroponic monitoring system (HMS) is presented. The HMS is to collect data of hydroponic plants such as quality and quantity of nutrient solution. The HMS is integrated to internet such that the collected data is stored in a cloud server. The data can be accessed by users through a web application. This study is to develop the web application as an interface for accessing the HMS data in real time. The web development is done by implementing the user centred design (UCD) method. A study case of monitoring hydroponic temperatures is presented in this development. It resulted in a web application that presents real-time data of the temperatures in numerically as well as graphically. This web application provides an informative, attractive, and user-friendly interface of the HMS.

Published
2022
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146. Vibration Response of 3-D Space Accessible Sandwich Composite.

Author

VAIDYA, A. S., UDDIN, N., and VAIDYA, U. K.

Subjects
*VIBRATION of sandwich construction, *VIBRATION (Mechanics), *REINFORCED plastics, *PLASTIC foams, *STRENGTH of materials, *FREQUENCY response, *COMPOSITE materials, *FATIGUE (Physiology)
Abstract

A 3-D sandwich composite comprising of E-glass core piles which are woven to the facesheets is considered in this work. This arrangement creates interstitial spaces in the core which can be used for foam infusion for sound/vibration damping, fluid storage, or for routing wires or inserts, in addition to providing strength. The vibroacoustic response of such multi-functional materials has received little attention and is an important issue when the structure witnesses mechanical vibrations. This article presents the vibration related studies carried out on the 3-D sandwich composite, infused with SC-15 resin. The frequency response function (FRF) and the damping ratios are the parameters of interest for this study. In this study the experimental data is presented for the unfoamed (as received) core configuration and the core filled with the polyurethane (PUR) foam. The average damping ratio of the unfoamed sandwich panel was found to be 0.55%. An increase of 150% in the damping ratio was observed for the PUR foam filled panels for a 77% increase in weight when compared to an unfoamed sandwich panel. Use of vibration as a non-destructive damage detection technique is demonstrated for beam specimens damaged by flexural loading. A reduction of 35% in the resonant frequency and 193% increase in the damping ratio was observed for approximately 6% core damage of the sandwich composite. [ABSTRACT FROM AUTHOR]

Published
2009
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