Title: Steam compression with inner evaporative spray cooling: a case study

Authors: Jian Qui, Zhaolin Gu, Guoguang Cai

Addresses: School of Environmental and Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. ' School of Environmental and Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. ' School of Environmental and Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Abstract: An adiabatic dry saturated steam compression process with inner evaporative spray cooling in screw compressors for steam heat pump systems is studied. Thermodynamic model and simulation of this variable-mass compression process are devised. Differential equations are formulated and used to calculate the amount of liquid injected and the work to drive the compressor on the basis of simplification, taking into consideration the factors such as the isentropic efficiency of the compressor and the degree of superheating. Compared with the ordinary adiabatic compression, an example of steam compression with water injection is illustrated. The results show that the compression work is reduced and the discharge temperature decreases.

Keywords: inner evaporative spray cooling; steam compression; screw compressors; steam heat pumps; thermodynamic modelling; simulation; variable-mass compression; water injection.

DOI: 10.1504/IJCAT.2004.006643

International Journal of Computer Applications in Technology, 2004 Vol.21 No.4, pp.189 - 193

Available online: 31 Mar 2005 *

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