Radiator Performance Enhancement using a LiBr-H
O Absorption Cooler and Microchannel Technology: A Portable Life Support System Example
Portable life support systems must be capable of performing thermal management in a wide variety of environments. A microchannel-based LiBr-H2O absorption cooler may make radiator cooling more attractive than water sublimation in high temperature environments by increasing the temperature and in turn reducing the required surface area of the radiator. This study showed that such a heat pump can lift the radiator temperature from 15°C to 60°C with a coefficient of performance of 0.65 and reduce the radiator area by up to 60%. Proof-of-concept testing using microchannel technology has been demonstrated. This technology should enable the LiBr-H2O absorption cooler by reducing its overall mass and improving heat and mass transfer rates in the absorber.
Citation: Brooks, K. and TeGrotenhuis, W., "Radiator Performance Enhancement using a LiBr-H2O Absorption Cooler and Microchannel Technology: A Portable Life Support System Example," SAE Technical Paper 2006-01-2267, 2006, https://doi.org/10.4271/2006-01-2267. Download Citation
Kriston P. Brooks, Ward E. TeGrotenhuis
Pacific Northwest National Laboratory
International Conference On Environmental Systems