Abstract
AbstractThis work introduces the concept of a compact high-speed rotation heat pump combining rotation-driven hydrostatic compression and intermediate heat exchange in one compact device with two working fluids. The full system consists of the rotating part and external heat exchanger, compressor and turbine forming two separate closed gas loop cycles connected through the intermediate heat exchanger. This separates the addition and extraction of work/heat for the two cycles: Compressor work and cold environment heat is added to the cooling cycle, heat is transferred from cooling cycle to heating cycle, turbine work is extracted to alleviate some of the compressor work, and the warm environment extracts heat from the heating cycle. The necessary compressor work and achievable turbine work is determined based on a heat transfer generated imbalance between hydrostatic fluid columns. This is like two heat-transfer-coupled normal-reversed Brayton cycles without phase change, differing from conventional vapor-compression cycles.Keywordsenergy systemsgas cycleheat pumphydrostaticrotation
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