THE PARTIAL MOLAL HEAT CAPACITY OF THE CONSTITUENTS AND THE SPECIFIC HEAT OF AQUEOUS SOLUTIONS OF SODIUM AND HYDROGEN CHLORIDES

1927 ◽  
Vol 49 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Merle Randall ◽  
William D. Ramage

1981 ◽  
Vol 50 (1) ◽  
pp. 276-280 ◽  
Author(s):  
Shigeo Imaizumi ◽  
Ichiro Hatta ◽  
Takashi Matsuda


1975 ◽  
Vol 53 (23) ◽  
pp. 3634-3636 ◽  
Author(s):  
Carmel Jolicoeur ◽  
Patrick Picker ◽  
Gérald Perron

The direct specific heat measurement on aqueous benzene solutions by flow microcalorimetry have been repeated to elucidate discrepancies among earlier results. Through extensive variations of experimental conditions, the origin of difficulties encountered previously has been investigated and a simple procedure has been devised to circumvent problems inherent to this particular type of measurements.



2016 ◽  
Vol 33 (12) ◽  
pp. 3465-3472 ◽  
Author(s):  
Young Eun Kim ◽  
Jeong Ho Choi ◽  
Soung Hee Yun ◽  
Sung Chan Nam ◽  
Yeo Il Yoon




2015 ◽  
Vol 29 (4) ◽  
pp. 2582-2590 ◽  
Author(s):  
Young Eun Kim ◽  
Soung Hee Yun ◽  
Jeong Ho Choi ◽  
Sung Chan Nam ◽  
Sung Youl Park ◽  
...  


1946 ◽  
Vol 24b (2) ◽  
pp. 51-56 ◽  
Author(s):  
T. Thorvaldson ◽  
E. C. Bailey

The heat capacity of aqueous solutions of hydrofluoric acid varying in concentration from 0.55 to 48% was determined over the temperature range 18° to 20 °C. The respective values for the specific heat varied between 0.996 and 0.718 cal. per gm. The values obtained are consistent among themselves but differ markedly from those found in the literature. The apparent molal heat capacity of the solute over this range of concentration and temperature was calculated and compared with values obtained from the data of other experimenters.



Author(s):  
V.N. Moraru

The results of our work and a number of foreign studies indicate that the sharp increase in the heat transfer parameters (specific heat flux q and heat transfer coefficient _) at the boiling of nanofluids as compared to the base liquid (water) is due not only and not so much to the increase of the thermal conductivity of the nanofluids, but an intensification of the boiling process caused by a change in the state of the heating surface, its topological and chemical properties (porosity, roughness, wettability). The latter leads to a change in the internal characteristics of the boiling process and the average temperature of the superheated liquid layer. This circumstance makes it possible, on the basis of physical models of the liquids boiling and taking into account the parameters of the surface state (temperature, pressure) and properties of the coolant (the density and heat capacity of the liquid, the specific heat of vaporization and the heat capacity of the vapor), and also the internal characteristics of the boiling of liquids, to calculate the value of specific heat flux q. In this paper, the difference in the mechanisms of heat transfer during the boiling of single-phase (water) and two-phase nanofluids has been studied and a quantitative estimate of the q values for the boiling of the nanofluid is carried out based on the internal characteristics of the boiling process. The satisfactory agreement of the calculated values with the experimental data is a confirmation that the key factor in the growth of the heat transfer intensity at the boiling of nanofluids is indeed a change in the nature and microrelief of the heating surface. Bibl. 20, Fig. 9, Tab. 2.



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