Specific heats of cottonseed and its co‐products

• Published in: Journal of the American Oil Chemists' Society Vol. 80; no. 2; pp. 123 - 126
• Main Authors: Wan, Peter J., Zarins, Zigrida M.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.02.2003; Springer
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; Cotton; delinted cottonseed or black seed; DSC; Economic plant physiology; Fat industries; Food industries; Fundamental and applied biological sciences. Psychology; Generalities and techniques; hulls; kernels; linters; meal; specific heat; white cottonseed; Differential scanning calorimetry; white cottonseed; delinted cottonseed or black seed; Vegetable oil; Edible oil; Cottonseed oil; Cotton; Thermal properties; meal; Specific heat; linters; DSC; Cottonseed meal; hulls; Quality control; Cotton seed; kernels; By product
• ISSN: 0003-021X; 1558-9331
• DOI: 10.1007/s11746-003-0663-7

Most of the annual crop of cotton is harvested and stored for the entire crushing season until the new crop year begins. It is desirable to have specific heat data of agricultural materials so the engineer can manage the heat transfer problem associated with each crop during storage. Thermal properties of agricultural products, such as cottonseed and its oil mill co‐products, are not commonly available. Partially because these materials are bulky and lack uniformity, their thermal properties are difficult to assess precisely. The highly sensitive and large‐sample volume differential scanning calorimeter has made the precise determination of specific heat of agricultural material possible. This report describes a procedure used to obtain the specific heat of white cottonseed and its co‐products as a function of temperature. The materials tested included cotton fiber, whole cottonseed, linters, hulls, meats, and meal. Specific heat values of these materials ranged from 0.32 to 0.6 cal/g/°C at 30°C and 0.42 to 0.72 cal/g/°C at 90°C. When these materials were dried, the values converged to 0.24 to 0.33 cal/g°C at 30°C.