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This paper presents a two-stage optimisation approach to regional energy planning with biomass utilisation. The aim of the first stage is to determine the optimal energy mix and the bioenergy target, which is to be fulfilled in the second stage when synthesising the optimal biomass supply chain network. The mathematical formulation of the two stages yields two linear models, for which global optimality...
The time variation of phase height from interferometric SAR (InSAR) from TanDEM-X is shown for 3 years, in Tapajos National Forest, Brazil. Its RMS, for one secondary stand, about a model linear in time is 0.5 m. This RMS is compared to that for 30 stands at one epoch. The single-epoch RMS for a model linear in mean field height is 2.2 m. It is suggested that the improved performance of the temporal...
This paper describes the development of a distributed sliding mode control controller to regulate the pH of a tubular photobioreactor using the total inorganic carbon as the controlled variable of the process. The main purpose of the control system is to maintain the pH around a desired reference value and, at the same time, attenuate the undesirable transients caused by the disturbances. To study...
This paper presents a simple mass balance model for plant growth. This basis is in the development of a model intended to enable the prediction and control of a plant production chamber for MELiSSA, a regenerative life support system project developed by the ESA. Photosynthesis and respiration have been selected as key reactions for biomass production. Considering these reactions, the model was developed...
The anaerobic digestion is a wastewater treatment process without oxygen. It is a very complex process with a nonlinear model of six variables. This model is complex for state estimation and automatic control. We propose a nonlinear equivalent model but for which the theories developed for the linear case can be applied easily using the LMI tools.
As a result of different environmental issues, especially global warming and the greenhouse effect, biotechnology using microalgae has become a very promising alternative for carbon dioxide mitigation. Indeed, these unicellular microorganisms reduce efficiently carbon dioxide emissions through their photosynthetic activity. In order to maximize the efficacy of this biological process, one of the challenges...
Microalgae present a very promising alternative for carbon dioxide mitigation strategies. These unicellular photosynthetic microorganisms fix carbon dioxide efficiently, converting it into biomass and high-value compounds. One of the control system challenges is to maximize carbon dioxide consumption by maintaining the cellular concentration to an optimal value in the exponential phase. In this paper,...
In order to copper with the continuing global warming, various innovative plans have been promoted by both the country and also the local levels. However, as the most important local elements, urban and rural areas are always examined in a separate way to find the way to the low-carbon society, especially the low-carbon energy system. In this study, an integrated energy system covering both urban...
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