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Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the
The concept of overall coefficient of heat transfer is used in heat transfer problems of
Sohana's mathematics test had 75 problems i.e. 10 arithmetic, 30 algebra and 35 geometry problems each carrying I mark She answered 70% of the arithmetic, 40% of the algebra and 60% of the geometry problems correctly. She did not pass the test as she got less than 60% marks. How many more questions she would have needed to answer correctly to earn a 60% passing grade?
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
Which of the following plays an important role in photosynthesis?
Which part of the brain plays an important role in motor control?
....parent plays a dirrerent but important role in a child's life.