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Abstract: A micro turbo-expander capable of high working speed was specially manufactured for use in an organic Rankine cycle (ORC). A series of tests were executed to examine the performance of the machine. In the experiment, the machine was tested under different inlet pressure conditions (0.2–0.5 MPa). Data such as the compressed air pressure, temperatures of the inlet and the outlet, rotational speed, and electric power generation were analyzed to discover underlying relationships. During the test, the rotational speed of the machine reached as high as 54 000 r/min, the peak value of the temperature drop between the inlet and the outlet reached 42 °C, the maximum electric power generated by the motor-generator attached to the machine reached 630 W, and the efficiency of the machine reached 0.43.

[1]Canada, S., Cohen, G., Cable, R., Brosseau, D., Price, H., 2004. Parabolic Trough Organic Rankine Cycle Solar Power Plant, NREL/CP-550-37077. DOE Solar Energy Technologies Program Review Meeting, Denver, USA.

[2]Chacartegui, R., Sanchez, D., Munoz, J.M., Sanchez, T., 2009. Alternative ORC bottoming cycles for combined cycle power plants. Applied Energy, 86(10):2162-2170.

[3]Dipippo, R., 2004. Second law assessment of binary plants generating power from low-temperature geothermal fluids. Geothermics, 33(5):565-586.

[4]Dong, L.L., Liu, H., Riffat, S., 2009. Development of small-scale and micro-scale biomass-fuelled CHP systems—a literature review. Applied Thermal Engineering, 29(11-12):2119-2126.

[5]Drescher, U., Bruggemann, D., 2007. Fluid selection for the organic Rankine cycle (ORC) in biomass power and heat plants. Applied Thermal Engineering, 27(1):223-228.

[6]Engin, T., Ari, V., 2005. Energy auditing and recovery for dry type cement rotary kiln systems––a case study. Energy Conversion and Management, 46(4):551-562.

[7]Franco, A., Villani, M., 2009. Optimal design of binary cycle power plants for water-dominated, medium-temperature geothermal fields. Geothermics, 38(4):379-391.

[8]Hung, T.C., 2001. Waste heat recovery of organic Rankine cycle using dry fluids. Energy Conversion and Management, 42(5):539-553.

[9]Kane, M., Larrain, D., Favrat, D., Allani, Y., 2003. Small hybrid solar power system. Energy, 28(14):1427-1443.

[10]Mago, P.J., Chamra, L.M., 2008. Exergy analysis of a combined engine-organic Rankine cycle configuration. Proceedings of the Institution of Mechanical Engineers, Part A-Journal of Power and Energy, 222(8):761-770.

[11]NDRC (National Development and Reform Commission), 2007. The National Long-Term Plan of the Development of the Renewable Energy. NDRC, Beijing, China, p.18-19 (in Chinese).

[12]Persson, J.G., 1990. Performance Mapping vs Design Parameters for Screw Compressors and other Displacement Compressor Types. VDI Berichte, nr. 859, Düsseldorf, Germany.

[13]Qi, M., 1992. Refrigeration Accessories. Aviation Industry Press, Beijing, p.28-30 (in Chinese).

[14]Quoilin, S., Lemort, V., 2009. Technological and Economical Survey of Organic Rankine Cycle Systems. European Conference on Economics and Management of Energy in Industry, Vilamoura, Portugal.

[15]Saleh, B., Koglbauer, G., Wendland, M., Fischer, J., 2007. Working fluids for low-temperature organic Rankine cycles. Energy, 32(7):1210-1221.

[16]Tchanche, B.F., Papadakis, G., Lambrinos, G., Frangoudakis, A., 2009. Fluid selection for a low-temperature solar organic Rankine cycle. Applied Thermal Engineering, 29(11-12):2468-2476.

[17]Yanagisawa, T., Fukuta, M., Ogi, Y., Hikichi, T., 2001. Performance of an Oil-Free Scroll-Type Air Expander. Proceedings of the IMECHE Conference Transactions on Compressors and Their Systems, London, UK, p.167-174.

[18]Zanelli, R., Favrat, D., 1994. Experimental Investigation of a Hermetic Scroll Expander-Generator. Proceedings 12th Internnational Compressor Engineering Conference, Purdue, USA, p.459-464.