(b) Design an Ocean Thermal Energy Converter (OTEC) in Salalah, Oman. The OTEC moves 200 cubic meters of water per second through a heat exchanger, which results in a 1% reduction in temperature expressed in Kelvins. All the extracted heat is then transmitted to the ammonia boiler. The ammonia's temperature, known as THT, is equivalent to the average temperature of the water in the warm water heat exchanger minus 1 degree Kelvin when it enters the turbine. A cooling effect of 250 cubic meters of cold water per second is utilized to maintain the ammonia's leaving temperature, called TCT, at 10 degrees Celsius. The turbine/generator system operates at 90% efficiency of the maximum efficiency possible for a heat engine, known as Carnot efficiency, when working between the temperatures THT and TCT. 12 MW of the generated electricity is consumed for pumping purposes. (i) Determine the required temperature for the warm water intake to produce a total of 35 MW of electricity available for sale. [11 Marks] (ii) Calculate the intake temperature be so that the OTEC produces exactly equal to the amount of power needed for pumping. [3 Marks]
(b) Design an Ocean Thermal Energy Converter (OTEC) in Salalah, Oman. The OTEC moves 200 cubic meters of water per second through a heat exchanger, which results in a 1% reduction in temperature expressed in Kelvins. All the extracted heat is then transmitted to the ammonia boiler. The ammonia's temperature, known as THT, is equivalent to the average temperature of the water in the warm water heat exchanger minus 1 degree Kelvin when it enters the turbine. A cooling effect of 250 cubic meters of cold water per second is utilized to maintain the ammonia's leaving temperature, called TCT, at 10 degrees Celsius. The turbine/generator system operates at 90% efficiency of the maximum efficiency possible for a heat engine, known as Carnot efficiency, when working between the temperatures THT and TCT. 12 MW of the generated electricity is consumed for pumping purposes. (i) Determine the required temperature for the warm water intake to produce a total of 35 MW of electricity available for sale. [11 Marks] (ii) Calculate the intake temperature be so that the OTEC produces exactly equal to the amount of power needed for pumping. [3 Marks]
Chapter19: Special-purpose Outlets-water Pump, Water Heater
Section19.2: Water Heater Branch Circuit
Problem 8R: For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature...
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![(b) Design an Ocean Thermal Energy Converter (OTEC) in Salalah, Oman. The OTEC
moves 200 cubic meters of water per second through a heat exchanger, which results
in a 1% reduction in temperature expressed in Kelvins. All the extracted heat is then
transmitted to the ammonia boiler. The ammonia's temperature, known as THT, is
equivalent to the average temperature of the water in the warm water heat exchanger
minus 1 degree Kelvin when it enters the turbine. A cooling effect of 250 cubic meters
of cold water per second is utilized to maintain the ammonia's leaving temperature,
called TCT, at 10 degrees Celsius. The turbine/generator system operates at 90%
efficiency of the maximum efficiency possible for a heat engine, known as Carnot
efficiency, when working between the temperatures THT and TCT. 12 MW of the
generated electricity is consumed for pumping purposes.
(i) Determine the required temperature for the warm water intake to produce a total of 35
MW of electricity available for sale.
[11 Marks]
(ii) Calculate the intake temperature be so that the OTEC produces exactly equal to the
amount of power needed for pumping.
[3 Marks]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1818f07c-cbaa-4b69-abbb-b5da7ef9e80f%2F5b3a0838-3ea9-41dd-a615-1b7ea16d5a60%2F0ffs2hd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(b) Design an Ocean Thermal Energy Converter (OTEC) in Salalah, Oman. The OTEC
moves 200 cubic meters of water per second through a heat exchanger, which results
in a 1% reduction in temperature expressed in Kelvins. All the extracted heat is then
transmitted to the ammonia boiler. The ammonia's temperature, known as THT, is
equivalent to the average temperature of the water in the warm water heat exchanger
minus 1 degree Kelvin when it enters the turbine. A cooling effect of 250 cubic meters
of cold water per second is utilized to maintain the ammonia's leaving temperature,
called TCT, at 10 degrees Celsius. The turbine/generator system operates at 90%
efficiency of the maximum efficiency possible for a heat engine, known as Carnot
efficiency, when working between the temperatures THT and TCT. 12 MW of the
generated electricity is consumed for pumping purposes.
(i) Determine the required temperature for the warm water intake to produce a total of 35
MW of electricity available for sale.
[11 Marks]
(ii) Calculate the intake temperature be so that the OTEC produces exactly equal to the
amount of power needed for pumping.
[3 Marks]
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