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Heat-Exchangers-and-Mass-Transfer

A steam condenser is transferring 250 k W of rmal energy at a condensing temperature of 65 degree Celsius. The cooling water enters condenser at 20 degree Celsius with a flow rate of 7500 kg/hr. Calculate log mean temperature difference


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Exhaust gases (c P = 1.12 k J/kg K) flowing through a tubular heat exchanger at the rate of 1200 kg/hr are cooled from 400 degree Celsius to 120 degree Celsius. This cooling is affected by water (c P = 4.18 k J/kg K) that enters the system at 10 degree Celsius at the rate of 1500 kg/hr. If the overall heat transfer coefficient is 500 k J/m2 hr degree, what heat exchanger area is required to handle the load for parallel flow arrangement?

A steam condenser is transferring 250 k W of rmal energy at a condensing temperature of 65 degree Celsius. The cooling water enters condenser at 20 degree Celsius with a flow rate of 7500 kg/hr. Calculate log mean temperature difference

Consider the above problem, find what error would be introduced if the arithmetic mean temperature difference is used rather than the log-mean temperature difference? Take overall heat transfer coefficient for the condenser surface as 1250 W/m2 K

A steam condenser is transferring 250 k W of thermal energy at a condensing temperature of 65 degree Celsius. The cooling water enters the condenser at 20 degree Celsius with a flow rate of 7500 kg/hr. Calculate the log mean temperature difference

Heat Exchangers and Mass Transfer

Heat-Transfer