Calculate the thermal efficiency of a Carnot-cycle heat engine operating between 500° and 40°e….

Calculate the thermal efficiency of a Carnot-cycle heat engine operating between 500° and 40°e. Compare the result with that of Problem 7.1.

Problem 7.1.

Calculate the thermal efficiency of the steam power plant cycle described in Problem 6.13.

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Problem 6.13

1.The following data are for a simple steam power plant, as shown in Fig. 6.14.

Calculate

(a) The power output of the turbine.

(b) Heat-transfer rates in the condenser, economizer, and steam generator.

(c) The flow rate of cooling water through the condenser, if the temperature of the cooling water increases from 15° to 25°C in the condenser

2.The following data are for a simple steam power plant as shown in Fig. 6.14.

Calculate

(a) The power output of the turbine.

(b) Heat-transfer rates in the condenser, economizer, and steam generator.

(c) The flow rate of cooling water through the condenser, if the temperature of the cooling water increases from 55 to 75 F in the condenser.

 

 

 

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