Influence of the solution heat exchanger efficiency on the performance of a single effect H2O-LiBr adiabatic absorption system Articles uri icon

publication date

  • June 2011

start page

  • 107

end page

  • 112

issue

  • 2

volume

  • 19

international standard serial number (ISSN)

  • 2010-1325

electronic international standard serial number (EISSN)

  • 2010-1333

abstract

  • This work analyzes the effect that particular operating conditions of a single effect H2O-LiBr adiabatic absorption system have on a plate-type solution heat exchanger efficiency. The corresponding influence of such efficiency on the performance of facility under study is evaluated. As a result of the design of experimental test facility, the functioning of the strong solution circuit leads to take into account some particular operating conditions which affect the correct performance of the solution heat exchanger. For some experimental conditions, the strong solution side is not completely filled by the solution fluid. As a consequence of this, the heat transfer process is affected, reducing the solution heat exchanger efficiency and changing greatly the resulting coefficient of performance (COP) of the absorption facility. In order to illustrate this phenomenon, this paper offers graphical results including: solution working temperatures, solution heat exchanger efficiency and COP in a time sequence of an experiment, as well as for fixed steady-state operating conditions. These results show the importance of a correct functioning of the solution heat exchanger on the performance of an absorption system. The results are useful for researchers interested in new absorption cycle designs. Keywords: Solution heat exchanger; absorption; water/lithium bromide.

keywords

  • solution heat exchanger ; absorption ; water/lithium bromide