Lithium bromide chiller technology has experienced interest and growth worldwide. However, a considerable amount of work needs to be done to bring LiBr chiller technology up to the control sophistication level of electrically driven vapor compression equipment.

Real time, in-situ, low cost and reliable concentration measurement is a critical need in any state-of-the-art control strategy for LiBr equipment. Given the many advances in sensor technology and in the microelectronics field, what is lacking for using these sensors to control LiBr chiller operation is "secondary property" data for aqueous LiBr solutions as a function of temperature and composition.

The objective of this research is a) to formally categorize and evaluate all available secondary property data that has been reported for mixtures of Lithium Bromide and water, b) to evaluate its feasibility of utilizing these properties for control applications in Lithium bromide/water absorption systems, and c) to assess sensor technology available today for the properties selected under a and b.

PRINCAL INVESTIGATOR: Robert Tapscott, Murdoch University
CONDUCTED: September 1996 - June 1997
SPONSORED BY: TC 8.3, Absorption and Heat Operated Machines