AN-04-1 Symposium on Air-to-Carbon Dioxide Heat Exchangers AN-04-1-1 Experimental Study of Supercritical CO2 Gas Cooling in a Microchannel Gas Cooler Yuan Zhao and Michael M. Ohadi 291 AN-04- 1 -2 Flow Distribution Issues in Parallel Flow Heat Exchangers Pega S. Hrnjak 301 AN-04-1 -3 Two-Phase Refrigerant Distribution in Round Tube Manifolds - Sivert Vist . 307