skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Save energy, without entropy

Abstract

When we talk about saving energy what we usually mean is not wasting work. What we try to do when we design a process, is to use work as effectively as possible. It's hard to do that if we can't see it clearly. This paper illustrates how work can be seen (or calculated) without imposing entropy as a screen in front of it. We've all heard that the second law tells us that the entropy of the universe is increasing, and we are left with the feeling that the universe is ultimately headed for chaos, but receive little other information from this statement. A slightly more useful statement of the second law is the work potential of the universe is decreasing. However, this statement carries a needlessly negative ring. A simplified definition of the second law is: It takes work to change things. With these two corollaries: We can calculate the theoretical minimum work needed for a given change; and We can express the value of all changes in terms of work.

Authors:
 [1]
  1. Monsanto Co., St. Louis, MO (United States)
Publication Date:
OSTI Identifier:
7179254
Resource Type:
Journal Article
Journal Name:
Hydrocarbon Processing; (United States)
Additional Journal Information:
Journal Volume: 71:10; Journal ID: ISSN 0018-8190
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 29 ENERGY PLANNING, POLICY AND ECONOMY; ENERGY CONSERVATION; PLANNING; HEAT EXCHANGERS; DESIGN; THERMODYNAMICS; CALCULATION METHODS; ENTROPY; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; 420400* - Engineering- Heat Transfer & Fluid Flow; 661300 - Other Aspects of Physical Science- (1992-); 291000 - Energy Planning & Policy- Conservation

Citation Formats

Steinmeyer, D. Save energy, without entropy. United States: N. p., 1992. Web.
Steinmeyer, D. Save energy, without entropy. United States.
Steinmeyer, D. Thu . "Save energy, without entropy". United States.
@article{osti_7179254,
title = {Save energy, without entropy},
author = {Steinmeyer, D},
abstractNote = {When we talk about saving energy what we usually mean is not wasting work. What we try to do when we design a process, is to use work as effectively as possible. It's hard to do that if we can't see it clearly. This paper illustrates how work can be seen (or calculated) without imposing entropy as a screen in front of it. We've all heard that the second law tells us that the entropy of the universe is increasing, and we are left with the feeling that the universe is ultimately headed for chaos, but receive little other information from this statement. A slightly more useful statement of the second law is the work potential of the universe is decreasing. However, this statement carries a needlessly negative ring. A simplified definition of the second law is: It takes work to change things. With these two corollaries: We can calculate the theoretical minimum work needed for a given change; and We can express the value of all changes in terms of work.},
doi = {},
url = {https://www.osti.gov/biblio/7179254}, journal = {Hydrocarbon Processing; (United States)},
issn = {0018-8190},
number = ,
volume = 71:10,
place = {United States},
year = {1992},
month = {10}
}