Novel Combined-Cycle Turbine Engine with Water Harvesting

A novel combined-cycle turbine engine with water harvesting capability is proposed for development into a commercialy viable product. The semi-closed engine and combined absorption refrigeration cycle is ideally suited to water extraction from the exhaust. Water extraction occurs in a portion of the cycle that has high pressure, low temperature and a near-stoichiometric exhaust stream, all of the conditions neccessary for optimum water yield. In addition, the proposed engine cycle has a low thermal signature due to low temperature exhaust and ultra-low emission of NOx and CO. The cycle has high efficiency and high power density. The proposed Phase I effort features analysis, design, and experimental testing to determine the viability of the combined cycle. An existing analysis code of the combined cycle will be modified to accomodate the water extraction bookkeeping. An existing test engine with exhaust recirculation will be used to demonstrate water extraction at atmospheric pressure. Additional work will include a component matching analysis and a water extraction hardware design component. Testing will be performed at an existing facility at the University of Florida. Analytical and design support will be provided by Concepts NREC.