This document describes tests of a refrigeration system that uses flooded evaporation in the evaporator. Key aspects of the new system include a bubble expansion valve to control liquid flow, an ejector pump to circulate refrigerant, and a method to recover pressure drop losses. Testing showed the new system improved evaporator temperature by 3.5K and reduced power consumption by 10% compared to a standard direct expansion system. Operating data and test results are presented, showing the flooded evaporator system significantly improved heat exchanger efficiency.