PSYC 2390 Lecture Notes - Lecture 4: Ideal Gas Law, Stainless Steel, Psychrometrics

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Lana Trick

Document Summary

Another type of heat exchanger used in the food industry is called a scraped surface heat exchanger (sshe). The main design implementation is the addition of a mechanical scraping device (blade) that cleans off any accumulating product on the pipe walls. A plate heat exchanger consists of closely spaced stainless steel plates or fins arranged in parallel, with fluid flow occurring between plates. In deep-fat frying, conduction occurs within a solid food material while convection occurs between the oil and food material. Food materials science: four physicochemical states characterize the movement of water and ingredient molecules in food: (1) crystalline, (2) liquid, (3) amorphous rubbery, and (4) amorphous glassy. Most foods are multiphasic, meaning they consist of both amorphous rubbery and glassy areas, plus water. In polymer science, a glass is defined as any material that has solidified and become a rigid material without forming a regular crystal structure.