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The designation of a rich or a lean stream is not tied to the composition level of the components to be exchanged.
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A mass exchanger is any direct contact mass-transfer unit that employs a mass separating agent (MSA) (or a lean-stream) to selectively remove certain components (e.g., impurities, pollutants, byproducts, products) from a rich stream.
Such regenerators function by splitting a contaminated water stream into a regenerated lean stream and a low-quality reject stream.
By marrying a lean provision stream to a lean consumption stream (all the actions that must be taken by the consumer to acquire goods or services), providers can usually reduce their costs—and lower prices to consumers.
The synthesis task involves the preferential transfer of a certain species from a set of rich streams to a set of lean streams and at the same time accomplish a specified heat transfer task in a cost effective manner.
The stream from which the targeted components are removed is referred to as the "rich stream," while the stream to which the targeted components are transferred is referred to as the "lean stream" (or MSA).
Although the conversion rates of HCN slightly increases in the fuel lean stream of low-NOx burner due to relatively higher oxygen mass fraction in this stream, the peak value of fuel NOx formation rate curve is still lower than that of conventional burner.
This paper addresses the problem of automatically synthesizing mass-exchange networks in which the mass of a single (key) component is exchanged between a set of rich streams and a set of lean streams.
The proposed method incorporates Pinch Analysis principles into a graphical representation of mass integration problem as composition of target materials in rich streams versus the equivalent corresponding compositions in lean streams.
In the first stage, a linear programming problem is solved to determine the minimum cost of mass-separating agents and to locate thermodynamic bottlenecks (pinch points) which restrict the exchange of mass between the rich and the lean streams.
Netflix is available on a number of devices and screens, including gaming consoles like Microsoft's Xbox, the Sony PlayStation 3 and the Nintendo Wii - all of which hook up to a television for a lean-back streaming experience.
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