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Definitions-and-Basic-Concepts

1. A two pass surface condenser is required to handle exhaust from a turbine developing 15 MW with specific steam consumption of 5 kg/k W h. The quality of exhaust steam is 0.9, condenser vacuum is 66 cm of mercury while bar meter reads 76 cm of mercury. The condenser tubes are 28 mm inside diameter, 4 mm thick and water flows through tubes with a speed of 3 m/s and inlet temperature 20 degree Celsius. All steam is condensed, condensate is saturated water and temperature of cooling water at exit is 5 degree Celsius less than condensate temperature. Assuming that overall coefficient of heat transfer is 4 k W/m2 degree, determine mass of cooling water circulated
A two pass surface condenser is required to handle exhaust from a turbine developing 15 MW with specific steam consumption of 5 kg/k W h. The quality of exhaust steam is 0.9, condenser vacuum is 66 cm of mercury while bar meter reads 76 cm of mercury. The condenser tubes are 28 mm inside diameter, 4 mm thick and water flows through tubes with a speed of 3 m/s and inlet temperature 20 degree Celsius. All steam is condensed, condensate is saturated water and temperature of cooling water at exit is 5 degree Celsius less than condensate temperature. Assuming that overall coefficient of heat transfer is 4 k W/m2 degree, determine mass of cooling water circulated\r\n


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2. Which of following is not an example of recuperators type heat exchanger?


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3. Which one is having highest value of specific heat?


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4. A company is heating a gas by passing it through a pipe with steam condensing on outside. What percentage change in length would be needed if it is proposed to triple heating capacity?


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5. In a gas turbine recuperator, expression for effectiveness for parallel flow configuration reduces to


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6. A cold fluid (specific heat 2.95 k J/kg K) at 10 kg/min is to be heated from 25 degree Celsius to 55 degree Celsius in a heat exchanger. The task is accomplished by extracting heat from hot water (specific heat 4.186 k J /kg K) available at mass flow rate 5 kg/min and inlet temperature 85 degree Celsius. Identify type of arrangement of heat exchanger


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7. In how many categories heat exchangers are classified on basis of mechanical design of heat exchanger surface?


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8. Which one is having highest value of specific heat?


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9. What is value of specific heat for coal in J/kg K?


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10. Which one is having lowest value of specific heat?


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Heat Exchangers and Mass Transfer

A two pass surface condenser is required to handle exhaust from a turbine developing 15 MW with specific steam consumption of 5 kg/k W h. The quality of exhaust steam is 0.9, condenser vacuum is 66 cm of mercury while bar meter reads 76 cm of mercury. The condenser tubes are 28 mm inside diameter, 4 mm thick and water flows through tubes with a speed of 3 m/s and inlet temperature 20 degree Celsius. All steam is condensed, condensate is saturated water and temperature of cooling water at exit is 5 degree Celsius less than condensate temperature. Assuming that overall coefficient of heat transfer is 4 k W/m2 degree, determine mass of cooling water circulated
A two pass surface condenser is required to handle exhaust from a turbine developing 15 MW with specific steam consumption of 5 kg/k W h. The quality of exhaust steam is 0.9, condenser vacuum is 66 cm of mercury while bar meter reads 76 cm of mercury. The condenser tubes are 28 mm inside diameter, 4 mm thick and water flows through tubes with a speed of 3 m/s and inlet temperature 20 degree Celsius. All steam is condensed, condensate is saturated water and temperature of cooling water at exit is 5 degree Celsius less than condensate temperature. Assuming that overall coefficient of heat transfer is 4 k W/m2 degree, determine mass of cooling water circulated\r\n

;

Which of following is not an example of recuperators type heat exchanger?

;

Which one is having highest value of specific heat?

;

A company is heating a gas by passing it through a pipe with steam condensing on outside. What percentage change in length would be needed if it is proposed to triple heating capacity?

;

In a gas turbine recuperator, expression for effectiveness for parallel flow configuration reduces to

;

A cold fluid (specific heat 2.95 k J/kg K) at 10 kg/min is to be heated from 25 degree Celsius to 55 degree Celsius in a heat exchanger. The task is accomplished by extracting heat from hot water (specific heat 4.186 k J /kg K) available at mass flow rate 5 kg/min and inlet temperature 85 degree Celsius. Identify type of arrangement of heat exchanger

;

In how many categories heat exchangers are classified on basis of mechanical design of heat exchanger surface?

;

Which one is having highest value of specific heat?

;

What is value of specific heat for coal in J/kg K?

;

Which one is having lowest value of specific heat?

;