An ice plant of 200 tons refrigeration capacity makes use of the shell and tube superheat remover. The temperature of discharge is 112 OC and vapor is cooled to 52 OC. Water enters at 24 OC and is heated during the counterflow with the vapor to 70 OC. The compressor operates at 1352.2 kPaa condenser pressure and 247.14 kPaa evaporating pressure. The overall coefficient of heat transfer is 390 kJ/hr-m2-C. Calculate the LMTD.

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Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.