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Heat pump assisted distillation. IX: Acceptance trials on a system for separating ethanol and water
Author(s) -
Supranto S.,
Grover G. S.,
Pataskar S. G.,
Holland F. A.
Publication year - 1988
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440120306
Subject(s) - heat pump , distillation , coefficient of performance , fractional distillation , volumetric flow rate , gas compressor , heat exchanger , materials science , lift (data mining) , chemistry , thermodynamics , mechanics , chromatography , mechanical engineering , engineering , physics , computer science , data mining
An experimental study has been carried out on a continuously operated pilot fractional distillation column equipped with an external heat pump. The distillation column was a 153 mm diameter stainless steel unit containing fourty‐four sieve plates. An ethanol‐water mixture was fed to the column and the heat pump working fluid was R114. The actual coefficient of performance (COP) A of the heat pump increased with an increase in the mass flow rate of the working fluid. A maximum value of 4.5 was obtained with a gross temperature lift of 45°C. The performance of two reciprocating compressors was compared. A heat pump effectiveness factor of 0.8 was achieved. A maximum relative contribution of the heat pump of 65 per cent was obtained with minimum temporary insulation. With good insulation it is estimated that the relative contribution of the heat pump should exceed 80 per cent at the design feed rate. No control problems were encountered in the experiments.