(p,ρ,T) properties and apparent molar volumes Vϕ of CaCl2 in methanol at T=(298.15 to 398.15) K and pressure up to 40MPa

High Temperature and High Pressure Volumetric (Density and Apparent Molar Volumes) Properties of (CaCl2 + C2H5OH) Solutions

“…The best description of the present density data for CaCl 2 + C 2 H 5 OH solution was achieved for the functions A = false( a 1 + a 2 m + a 3 m 2 false) T + false( a 4 + a 5 m 2 false) T 2 + a 6 T 3 B = false( b 1 + b 2 m false) T C = false( c 1 + c 2 m false) T 2 The derived values of the coefficients a i , b j , and c i are given in Table . This equation was successfully used previously to represent measured densities for other binary solutions ,,, and pure fluids . Equation reproduced our measured values of density for CaCl 2 + C 2 H 5 OH solution in the temperature range from (298 to 398) K and at molalities from (0 to 1.55045) mol·kg −1 for the pressures up to 40 MPa with an AAD = 0.05 %.…”

“…The efficiency of an absorption heat transfer cycle depends on the physical and chemical properties of the heat transfer fluid. The problems of using conventional aqueous solutions of electrolytes were discussed in our previous publications on methanol solutions of electrolytes. , This work is a continuation of the study of solutions of electrolytes for their future application as heat transfer fluids in absorption systems. These systems (alcohol solutions of electrolyte) could replace aqueous solutions at temperatures below the freezing point of water.…”