Dear Mr. Vandecasteele,

Below please find some sources on Specific Heat Cp (“heat capacity”) of Carbohydrates.

In case of tables with heat capacity data of carbohydrates, I only listed the content and the page (p) and/or the table number of the source.

1) Rahman, S. (1995): Food Properties Handbook; CRC; Boca Raton. Chapter 4:

* page 239: sugar 1.255 kJ/(kg K).

* p 242 (table 4.4): sugar solutions at Xw = 0.1330 and

T = 54.7 oC: Cp = 1.298 kJ/(kg K);

T = 58.0 oC: Cp = 1.273 kJ/(kg K);

T = 59.1 oC: Cp = 1.256 kJ/(kg K).

At temperatures below 0 oC:

* p 248 (table 4.11): sucrose solutions with Xwo = 0.90 at temperatures of -31.6 oC to -3.5 oC: values of Cf = 2.142 kJ/(kg K) at T = -31.8 oC to Cf = 12.125 kJ/(kg K) at T = -3.5 oC.

* p 255 (table 4.22): Cp of sugar solutions at temperatures between -39 oC and -5 oC, and Xwo between 0.98 and 0.65.

* p 257 (table 4.27): Dextrose at -40 oC: Cp = 0.963 kJ/(kg K); at -80 oC Cp = 0.770 kJ/(kg K); at -120 oC Cp = 0.544 kJ/(kg K); at -160 oC Cp = 0.469 kJ/(kg K).

* p 259 (table 4.31 + text p. 261): Cp of sucrose solutions below freezing point.

* p 264 (table 4.33): Equation of Choi & Okos (1986) about Cp of carbohydrates, depending on temperature (between -40 oC and +150 oC):

Cca = 1.5488 + 1.9625 x 10^-3 x T - 5.9399 x 10^-6 x T^2.

2) Heldman & Lund (1992): Handbook of Food Engineering; Marcel Dekker; New York

p 286 (table 4): Cp of Carbohydrate at several temperatures:

20 oC Cp = 1.547 kJ/(kg oC); 30 oC Cp = 1.586 kJ/(kg oC); 40 oC Cp = 1.626 kJ/(kg oC); 50 oC Cp = 1.639 kJ/(kg oC); 60 oC Cp = 1.691 kJ/(kg oC); 70 oC Cp = 1.734 kJ/(kg oC); 80 oC Cp = 1.768 kJ/(kg oC); 90 oC Cp = 1.787 kJ/(kg oC); 100 oC Cp = 1.824 kJ/(kg oC)

3) Perry, Green & Maloney (1999): Perry’s Chemical Engineers’ Handbook; McGraw-Hill, New York:

* Table 2-198 (starting p. 2-178): specific heats of organic compounds in the ideal gas state: all types of alcohols, ethers, aldehydes, acetones, organic acids

* p 2-184: specific heat [in cal/(g oC)] of aqueous solutions: table 2-201 on acetic acid at 38 oC and 0 - 6.98 - 30.9 - 54.5 - 100 mol% acetic acid. Cp in

Also tables on Cp of aqueous solutions of aniline, ethyl alcohol, glycerol, methyl alcohol.

* p 2-185 (table 2-213): table on Cp of aqueous solutions of n-propyl alcohol.

* p 2-186 (table 2-219): Table on Cp of Cellulose 0.32 cal/(g oC)

* P 2-186 (table 2-219a): Cp of Castor oil, Citron oil, Olive oil

Please contact me ([email protected]) if you have no access to one of the sources listed above.

Greetings,

Janwillem Rouweler