Publication detail

Desorption-Absorption Heat Exchanger for Improving of Absorption Cycles Performance

POSPÍŠIL, J. SKÁLA, Z.

Original Title

Desorption-Absorption Heat Exchanger for Improving of Absorption Cycles Performance

English Title

Desorption-Absorption Heat Exchanger for Improving of Absorption Cycles Performance

Type

journal article - other

Language

en

Original Abstract

This paper deals with possibility of substitution of currently used solution heat exchangers for heat exchange between two flows of liquid mixture in absorption cycles. The substitution is based on utilizing of desorption-absorption process. This substitution is applicable at situations where a hot mixture flow is depressurizing during cooling process and a cool mixture is pressurized and heated. This is typical situation for absorption heat pumps cycles and absorption cooler cycles. The desorption-absorption heat exchanger represents a sub-mixing heat exchanger. Where, liquid solution flows are not mixed, but the exchanger enables transfer of vapor between the flows. This results in another advantage of such exchangers. Exchange of vapors causes changes in mass-fraction composition of mixtures. This can help to improve absorption cycles performance and decrease irreversibility during a heat exchange processes. This paper describes processes in the absorption-desorption heat exchanger. Utilizing of current heat exchangers is compared with utilizing of the absorption-desorption heat exchangers on a simple one-stage absorption cycle with an ammonia-water working pair.

English abstract

This paper deals with possibility of substitution of currently used solution heat exchangers for heat exchange between two flows of liquid mixture in absorption cycles. The substitution is based on utilizing of desorption-absorption process. This substitution is applicable at situations where a hot mixture flow is depressurizing during cooling process and a cool mixture is pressurized and heated. This is typical situation for absorption heat pumps cycles and absorption cooler cycles. The desorption-absorption heat exchanger represents a sub-mixing heat exchanger. Where, liquid solution flows are not mixed, but the exchanger enables transfer of vapor between the flows. This results in another advantage of such exchangers. Exchange of vapors causes changes in mass-fraction composition of mixtures. This can help to improve absorption cycles performance and decrease irreversibility during a heat exchange processes. This paper describes processes in the absorption-desorption heat exchanger. Utilizing of current heat exchangers is compared with utilizing of the absorption-desorption heat exchangers on a simple one-stage absorption cycle with an ammonia-water working pair.

RIV year

2005

Released

02.10.2005

ISBN

1790-031X

Periodical

IASME TRANSACTIONS

Year of study

8

Number

2

State

GR

Pages from

1454

Pages to

1461

Pages count

8

Documents

BibTex


@article{BUT46159,
  author="Jiří {Pospíšil} and Zdeněk {Skála}",
  title="Desorption-Absorption Heat Exchanger for Improving of Absorption Cycles Performance",
  annote="This paper deals with possibility of substitution of currently used solution heat exchangers for heat exchange between two flows of liquid mixture in absorption cycles. The substitution is based on utilizing of desorption-absorption process. This substitution is applicable at situations where a hot mixture flow is depressurizing during cooling process and a cool mixture is pressurized and heated. This is typical situation for absorption heat pumps cycles and absorption cooler cycles. The desorption-absorption heat exchanger represents a sub-mixing heat exchanger. Where, liquid solution flows are not mixed, but the exchanger enables transfer of vapor between the flows. This results in another advantage of such exchangers. Exchange of vapors causes changes in mass-fraction composition of mixtures. This can help to improve absorption cycles performance and decrease irreversibility during a heat exchange processes. This paper describes processes in the absorption-desorption heat exchanger. Utilizing of current heat exchangers is compared with utilizing of the absorption-desorption heat exchangers on a simple one-stage absorption cycle with an ammonia-water working pair.",
  chapter="46159",
  journal="IASME TRANSACTIONS",
  number="2",
  volume="8",
  year="2005",
  month="october",
  pages="1454",
  type="journal article - other"
}