TY - GEN
T1 - Experimental investigation on the thermodynamic performance of turbo-expander in two phases
AU - Lai, T.
AU - Hou, Y.
AU - Niu, L.
AU - Liu, J.
PY - 2012
Y1 - 2012
N2 - Experiment has been carried out on a two-phase air turboexpander under pre-cooling operation in order to enhance the efficiency of expander working in two-phase state. The temperature at the inlet of turboexpander is controlled through regulating the heat transfer rate of front heat exchanger. The outlet temperature, rotating speed and thermodynamic efficiency of the tested turboexpander with respect to inlet temperature have been instrumented and studied. When the turboexpander stepped into two-phase state, the outlet temperature tends towards stability which is independent with air inlet temperature. The isotropic efficiency of turboexpander with relative low liquid ratio maintains a high level and a system hysteresis shows up in the experiment. The working principle of turboexpander transiting from single phase to two phases has been investigated which may provides more reliable design criteria for turboexpanders working in two-phase. Keywords: two-phase, turboexpander, thermodynamic efficiency, low liquid ratio.
AB - Experiment has been carried out on a two-phase air turboexpander under pre-cooling operation in order to enhance the efficiency of expander working in two-phase state. The temperature at the inlet of turboexpander is controlled through regulating the heat transfer rate of front heat exchanger. The outlet temperature, rotating speed and thermodynamic efficiency of the tested turboexpander with respect to inlet temperature have been instrumented and studied. When the turboexpander stepped into two-phase state, the outlet temperature tends towards stability which is independent with air inlet temperature. The isotropic efficiency of turboexpander with relative low liquid ratio maintains a high level and a system hysteresis shows up in the experiment. The working principle of turboexpander transiting from single phase to two phases has been investigated which may provides more reliable design criteria for turboexpanders working in two-phase. Keywords: two-phase, turboexpander, thermodynamic efficiency, low liquid ratio.
UR - https://www.scopus.com/pages/publications/84899409551
M3 - 会议稿件
AN - SCOPUS:84899409551
SN - 9782913149939
T3 - Refrigeration Science and Technology
SP - 462
EP - 465
BT - 12th CRYOGENICS 2012 - IIR International Conference, Proceedings
PB - International Institute of Refrigeration
T2 - 12th International Institute of Refrigeration Conference on Cryogenics, CRYOGENICS 2012
Y2 - 11 September 2012 through 14 September 2012
ER -