Heat Capacities of the Water + Lithium Bromide + Ethanolamine and Water + Lithium Bromide + 1,3-Propanediol Systems

• Published in: Journal of chemical and engineering data Vol. 42; no. 2; pp. 371 - 373
• Main Authors: Kim, Jin-Soo, Park, Young, Lee, Huen, Yu, Sun Il
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 10.03.1997
• Subjects: Applied sciences; Devices using thermal energy; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Heat pumps; Alkali metal Compounds; Correlation; Absorption heat pump; Electrolyte solution; Concentration effect; Heat capacity; Temperature effect; Aqueous solution; Experimental study; Lithium Bromides; Thermodynamic properties
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je9602879

Heat capacities of the water + lithium bromide + ethanolamine (LiBr/H2N(CH2)2OH mass ratio = 3.5) and water + lithium bromide + 1,3-propanediol (LiBr/HO(CH2)3OH mass ratio = 3.5) systems were measured by using an isoperibol solution calorimeter at four temperatures (283.15, 298.15, 313.15, and 333.15 K) and absorbent (LiBr + H2N(CH2)2OH and LiBr + HO(CH2)3OH) concentration ranges of (29.2 to 70.7)% and (30.7 to 68.3)%, respectively. The measured values were fitted with a simple equation by a least-squares method and the average absolute deviations between experimental and calculated values were 0.21% for the water + lithium bromide + ethanolamine system and 0.15% for the water + lithium bromide + 1,3-propanediol system, respectively.