Considering the large amount of work that goes into the design of LNG processes there is surprisingly little attention to the subsequent operation. This probably comes from the misconception that optimal design and optimal operation is the same, but this is usually not true. In this paper we are studying optimal operation of a relatively simple LNG process, namely the PRICO process.

The computational effort involved in solution of real-time optimization problems can be very demanding. Hence, simple but effective implementation of optimal policies are attractive. A formal definition of simplicity is presented for a certain class of systems. Some Heat Exchanger Network problems can be formulated as Linear Programs. For this class of problems, a simple and effective implement...

What is the optimal operation of metabolic networks? This question is interesting to answer, as it would provide information on which underlying principles have shaped metabolic networks during evolution, and it may allow us to identify some simple rules governing the operation of metabolic networks under different growth conditions. Such rules might be important for metabolic network engineeri...

Abstract: In this study, the design and simulation of a combination of a photovoltaic (PV) array with an alkaline electrolyzer is performed to maximize the production of hydrogen as a reliable power resource. Detailed electrical model of PV system, as long as thermal and electrochemical model of electrolyzer is used. Since an electrolyzer is a non-linear load, its coupling with PV systems to ge...

this workshop features, (live) demonstration of sonographic technique of the upper extremity joints; patient positioning; transducer choices, operation and position on the anatomic landmarks; optimal evaluation of the anatomic structures in shoulder, elbow and wrist; hopefully on thursday or friday.

The focus of this chapter is on describing procedures for the optimal design and operation of man-portable power generation processes. For a given power demand, or a power demand varying in a specified range, the design and operation problem is to determine values of the design variables (e.g., sizes of the individual components such as fuel processing reactor and fuel cell) as well as operatio...

Against a backdrop of healthy domestic and foreign demand, the steel industry is continuing its fundamental trend of increasing production for the manufacturing industry. Meanwhile, since the steel industry accounts for approximately 11% of final energy consumption in Japan, efforts to improve the efficiency of energy usage have been pursued actively for a long time. Since the first oil crisis,...