Publication detail

ADDITIONAL AUXILIARY LINES FOR P-T-X DIAGRAM OF AMMONIA-WATER SYSTEM

POSPÍŠIL, J. SKÁLA, Z.

Original Title

ADDITIONAL AUXILIARY LINES FOR P-T-X DIAGRAM OF AMMONIA-WATER SYSTEM

English Title

ADDITIONAL AUXILIARY LINES FOR P-T-X DIAGRAM OF AMMONIA-WATER SYSTEM

Type

conference paper

Language

en

Original Abstract

Absorption cycles designers often utilize p-t-x diagrams of working mixtures for first suggestion of new absorption cycles. The p-t-x diagrams enable fast correct determination of saturate states of liquid (and gaseous) mixtures of refrigerants and absorbents. The working mixture isn't only at saturated state during a real working cycle. If we know pressure and temperature of an unsaturated mixture, exact position determination is possible in the p-t-x diagrams too. But there are still processes uneasy to draw in the p-t-x diagrams, namely adiabatic sorption. The adiabatic sorption is very interesting phenomenon that occurs when vapor of refrigerant is in contact with unsaturated liquid absorbent-refrigerant mixture and exchange of heat is forbid between the system and an environment. This contribution introduces new auxiliary lines that enable correct position determination of the adiabatic sorption process in the p-T-x diagram of ammonia-water system. The presented auxiliary lines were obtained from common functions for fast calculation of water-ammonia system properties.

English abstract

Absorption cycles designers often utilize p-t-x diagrams of working mixtures for first suggestion of new absorption cycles. The p-t-x diagrams enable fast correct determination of saturate states of liquid (and gaseous) mixtures of refrigerants and absorbents. The working mixture isn't only at saturated state during a real working cycle. If we know pressure and temperature of an unsaturated mixture, exact position determination is possible in the p-t-x diagrams too. But there are still processes uneasy to draw in the p-t-x diagrams, namely adiabatic sorption. The adiabatic sorption is very interesting phenomenon that occurs when vapor of refrigerant is in contact with unsaturated liquid absorbent-refrigerant mixture and exchange of heat is forbid between the system and an environment. This contribution introduces new auxiliary lines that enable correct position determination of the adiabatic sorption process in the p-T-x diagram of ammonia-water system. The presented auxiliary lines were obtained from common functions for fast calculation of water-ammonia system properties.

Keywords

adiabatic sorption, auxiliary lines, p-t-x diagram, ammonia-water systém

RIV year

2005

Released

01.06.2005

Publisher

Center for Environmental Energy Engineering (CEEE)

Location

Denver, USA

ISBN

80-248-0834-X

Book

International Sorption Heat Pump Conference 2005

Pages from

083

Pages to

86

Pages count

4

Documents

BibTex


@inproceedings{BUT20542,
  author="Jiří {Pospíšil} and Zdeněk {Skála}",
  title="ADDITIONAL AUXILIARY LINES FOR P-T-X DIAGRAM OF AMMONIA-WATER SYSTEM",
  annote="Absorption cycles designers often utilize p-t-x diagrams of working mixtures for first suggestion of new absorption cycles. The p-t-x diagrams enable fast correct determination of saturate states of liquid (and gaseous) mixtures of refrigerants and absorbents. The working mixture isn't only at saturated state during a real working cycle. If we know pressure and temperature of an unsaturated mixture, exact position determination is possible in the p-t-x diagrams too. But there are still processes uneasy to draw in the p-t-x diagrams, namely adiabatic sorption. The adiabatic sorption is very interesting phenomenon that occurs when vapor of refrigerant is in contact with unsaturated liquid absorbent-refrigerant mixture and exchange of heat is forbid between the system and an environment. This contribution introduces new auxiliary lines that enable correct position determination of the adiabatic sorption process in the p-T-x diagram of ammonia-water system. The presented auxiliary lines were obtained from common functions for fast calculation of water-ammonia system properties.",
  address="Center for Environmental Energy Engineering (CEEE)",
  booktitle="International Sorption Heat Pump Conference 2005",
  chapter="20542",
  institution="Center for Environmental Energy Engineering (CEEE)",
  year="2005",
  month="june",
  pages="083",
  publisher="Center for Environmental Energy Engineering (CEEE)",
  type="conference paper"
}