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Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture (Water +Ammonia)

By Tlllner-Hoth, Reiner

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Book Id: WPLBN0000661687
Format Type: PDF eBook
File Size: 1.97 MB.
Reproduction Date: 2005
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Title: Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture (Water +Ammonia)  
Author: Tlllner-Hoth, Reiner
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Language: English
Subject: Technology., Reference materials, Technology and literature
Collections: Techonology eBook Collection
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Tlllner-Hoth, R. (n.d.). Survey and Assessment of Available Measurements on Thermodynamic Properties of the Mixture (Water +Ammonia). Retrieved from http://hawaiilibrary.net/


Description
Technical Reference Publication

Excerpt
Introduction: The mixture (water and ammonia) is of special interest as a working fluid in absorption cycles, refrigeration, and heat recovery. Recently, such mixtures have been proposed for use in the Kalina cycle for increased efficiency in power generation. Water and ammonia are natural fluids which do not harm the environment. Therefore, they are also considered as alternative refrigerants to replace chlorofluorocarbons in some refrigeration applications. From the thermodynamic point of view, water and ammonia are strongly polar substances.

Table of Contents
Contents Introduction. ............................... 46 2. Survey of Experimental Data.. ................ 46 2.1. Vapor-Liquid Equilibrium. ............... 47 2.2. Single-Phase Properties. .................. 48 2.3. Solid-Liquid-Vapor Boundary and Critical Locus. ................................ 49 3. Data Comparisons. ......................... 49 3.1. The Triple-Point Line. ................... 49 3.2. Fluid Properties. ........................ 49 3.2.1.VLEData ........................ 50 3.2.2. Saturated Liquid Densities. .......... 57 3.2.3. ( p , v , ~ , x )D ata. . . . . . . . . . . . . . . . . . . 57 3.2.4.CaloricProperties ................... 57 4. Conclusion.. .............................. 59 5. Acknowledgements .......................... 60 6. Appendix.. ................................ 60 7. References.. ............................... 60 List of Tables I. Summary of expe.rimenta1 data for {water+ammonia} .......................... 47 2. Summary of experimental data for the triple-point line of {water + ammonia}. ................... 5 1 3. Corrected VLE data of Wucherer.. ............ 55 01998 by the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. This copyright is assigned to the American Institute of physics and the American Chemical Society. Reprints available from ACS; see Reprints List at back of issue. a)~uthotro whom correspondence should be addressed; Permanent address: Universitit Hannover, Institut fiir Thermodynamik, Callinstrasse 36, 30167 Hannover, Germany. List of Figures 1. Distribution of measured (p,T,x) data (a), (p,T,x,y) data (XI, and (T,x,y) data ( 0 ) in a T,x diagram. .......................... 50 2. Distribution of measured (p,T,y) data (@), (p,T,x,y) data (XI, and (T,x,y) data ( 0 ) in a T,y diagram. .......................... 50 3. Distribution of measured (p, v, T,x) data in a p,Tdiagr am ............................... 50 4. Distribution of liquid caloric data in a T,x diagram ................................... 51 5. Triple-point.temperatures of {watertammonia). Triple-point temperatures T, in (b) are calculated from Eq. (1). . . . . . . . . . . . . . . . . . . . . . 51 6. (a)-(f) Deviations hetween measured liquid mole fractions x and values calculated from Eq. (2) at tabulated values of pressure p and temperature T ............................. 52 7. (a)-(d) Deviations between measured vapor mole fractions y and values calculated from Eq. (2) at tabulated values of pressure p and temperature T ............................. 53 8. Relative deviations of vapor mole fractions y from values calculated from Eq. (2) at tabulated values of temperature T and vapor mole fraction y.. ............................... 54 9. Deviations between measured saturated liquid densities and values calculated from Eq. (2). .... 58 10. Deviations between measured compressed liquid densities and values calculated from Eq. (2). .... 58 11. Deviations between measured vapor densities and values calculated from Eq. (2). ............ 58 12. Deviations between liquid enthalpies and value

 

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