@Article{hmt.v3.2.3003,
AUTHOR = {Nikola Stosic, Ian K. Smith, Ahmed Kovacevic},
TITLE = {NUMERICAL AND EXPERIMENTAL RESEARCH IN  HEAT TRANSFER TO SCREW COMPRESSOR ROTORS*},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {3},
YEAR = {2012},
NUMBER = {2},
PAGES = {1--7},
URL = {http://www.techscience.com/fhmt/v3n2/55680},
ISSN = {2151-8629},
ABSTRACT = {Due to fast rotation of screw compressor rotors, temperature is uniform in the rotor cross section and temperature field is a function of the axial 
coordinate only. Apart of that the rotors in one cross section the rotors are simultaneously heated by hot gas on one side while cooled at another side 
by cold gas. As a result of identification of the main modes of heat transfer both in the rotors and between the rotors and their surroundings and the 
relative significance of each, a novel procedure is suggested to cool the rotors by injection of minute quantities of a volatile fluid. By this means the 
compressed gas should attain higher temperatures without rotor distortion. To confirm these concepts and quantify both the heat transfer rates and the 
rate of liquid injection required for rotor cooling, both a one dimensional flow study and a more complex 3-D numerical analysis were performed, the 
latter with the aid of a CFD code. The results indicated that the rotors could be maintained at a far lower temperature than that of the discharged gas 
by flash evaporative cooling, as a result of injecting a fractional percentage by mass of a volatile fluid. This was confirmed by experiment. This 
technique may be used to operate dry compressors at substantially higher pressure ratios than are currently possible in such machines. It is also 
shown that only minor design changes are needed to implement it.},
DOI = {10.5098/hmt.v3.2.3003}
}