Chemical Engineering

Download Energy Conservation in the Process Industries by W. F. Kenney PDF

By W. F. Kenney

Power Conservation within the strategy Industries presents perception into methods of choosing extra vital strength potency advancements. This ebook demonstrates how the foundations should be hired to sensible advantage.

Organized into 12 chapters, this ebook starts with an summary of the power state of affairs and a historical past in thermodynamics. this article then describes a staged way to more desirable strength use to appreciate the place the strength is going and the way to calculate the price of losses. different chapters think of bettering amenities in keeping with an realizing of the general website power method. This publication discusses besides the basic procedure and gear advancements. the ultimate bankruptcy bargains with systematic and complex layout equipment in addition to presents a few instructions and checklists for strength conservation items.

This e-book is a precious source for mechanical, lead strategy, and plant engineers excited about strength conservation. approach designers, plant managers, procedure researchers, and accountants also will locate this booklet super helpful.

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Extra info for Energy Conservation in the Process Industries

Example text

This new viewpoint will be trained to focus on practical profit (cost reduction) opportunities through a variety of approaches. Notes to Chapter 2 1. R. Gaggioli, Second Law Analysis for Process and Energy Engineering. Paper presented at the AIChE Meeting, November, 1980. 2. C. A. Berg, A technical basis for energy conservation. Mechanical Engineering 96, 30 (1974). 3. M. Sussman, "Availability (Exergy) Analysis," Milliken, Boston, Massachusetts, 1980. 4. R. B. D. Dissertation, Department of Engineering, New Hampshire, Dart­ mouth College, 1969.

In the real world the fuel is fired in a furnace or boiler and then the heat in the flue gas (products of combustion) is recovered by heat transfer. Figure 2-1 shows the impact of eliminating the membranes, Carnot engines, and fuel cells from the process. Assuming the stoichiometric ratio of air to fuel, the flame temperature should be 4300 °F (point b in Fig. 2-1). Because there is no fuel cell delivering work directly from the combustion reaction, about 88,000 Btu, or 27% of the available energy of the fuel, is immediately lost.

Thus, the direction given the engineer charged with improving the process is also markedly different. This difference in viewpoint is the key element in obtaining profitable energy saving ideas. Engineers must con­ centrate on recovering energy that is useful to their industrial processes. In the end, recovered energy must save fuel or its equivalent to be valuable. Much more will be said about this in Chapter 9. " In a thermomechanical process, A A and various "work" terms will be interchangeable.

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