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This book deals with the modeling and simulation of spiral coil heat exchanger, one of the most promising compact heat exchanger. Its design provides the advantages of high turbulence, high heat-transfer coefficients and high fouling resistance. High heat-transfer coefficients allow smaller heat-transfer areas compared to traditional shell-and-tube heat exchangers used for the same duty. This ultimately results in significant size reductions and weight savings as less material is needed to construct the unit.In this book firstly various type of compact heat exchanger used in industries are...

The famous saying "beauty lies in the eye of the beholder" holds true for a seemingly simple procedure like for example; selection of denture teeth in patients with few or all teeth missing. Given the social significance of dental aesthetics and the varying perception of aesthetics in the modern dental patient, this scientific study explores the relationship between ethnicity and dental aesthetics. It involves subjects from differing ethnic backgrounds to see that while choosing teeth for themselves from a manufacturer's mould guide and shade guide do they choose the appropriate teeth for...