Water 25c 45c by hot water cp 419 kjkg c that enters

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: as a result of taking daily showers. 7–110 Steam is to be condensed in the condenser of a steam power plant at a temperature of 50°C with cooling water from a nearby lake, which enters the tubes of the condenser at 18°C at a rate of 101 kg/s and leaves at 27°C. Assuming the condenser to be perfectly insulated, determine (a) the rate of condensation of the steam and (b) the rate of entropy generation in the condenser. Answers: (a) 1.595 kg/s, (b) 1.10 kW/K 7–111 A well-insulated heat exchanger is to heat water (Cp 4.18 kJ/kg · °C) from 25°C to 60°C at a rate of 0.50 kg/s. The heating is to be accomplished by geothermal water (Cp 4.31 kJ/kg · °C) available at 140°C at a mass flow rate of 0.75 kg/s. Determine (a) the rate of heat transfer and (b) the rate of entropy generation in the heat exchanger. Water 25°C 45°C by hot water (Cp 4.19 kJ/kg · °C) that enters at 100°C at a rate of 3 kg/s. Determine (a) the rate of heat transfer and (b) the rate of entropy generation in the heat exch...
View Full Document

This document was uploaded on 11/28/2012.

Ask a homework question - tutors are online