A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm...
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (24°C) at the ocean's surface and cooler water (4°C) 1,711 m below the surface. What is the maximum possible efficiency of the system? Enter your answer accurate to two decimal places.
Homework Answers
The maximum possible efficiency of the heat engine is
where the temperatures are in Kelvin
In percentage the answer is
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A proposed ocean thermal-energy conversion (OTEC) system is a
heat engine that would operate between warm...
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm...
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (15°C) at the ocean's surface and cooler water (3°C) 2,000 m below the surface. What is the maximum possible efficiency of the system? Enter your answer accurate to two decimal places.
An ocean thermal gradient electric generating system (OTEC) is proposed for siting in Oman.
(b) An ocean thermal gradient electric generating system (OTEC) is proposed for siting in Oman. This system would operate a heat engine driven by heat flow from warm ocean water (cooled from 27°C to 25 °C in the heating heat exchanger of the system), and cooled by heat flow to cold ocean water (which is heated from 3 °C to 5 C in the cooling heat exchanger of the system). The ocean water used in the different parts of the...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The system uses the temperature gradient between the surface water that is heated by the sun and much colder deep seawater to produce electricity. For more details on how the plant works, click here: OTEC Hydropower Explained a. If the temperature of the surface water is 34.9°C and the temperature of the deep seawater is 6.9°C , determine the maximum (Carnot) efficiency of the system....
A scientist designed a gas turbine based-ocean thermal energy conversion (OTEC) system. Is it a wise...
A scientist designed a gas turbine based-ocean thermal energy conversion (OTEC) system. Is it a wise idea to do so, if not why, suggest an alternative way? Calculate the Carnot (ideal) efficiency of a common OTEC system.
04: An Ocean Thermal Energy Converter (OTEC) pumps 200 m/s through a heat exchanger in which the temperature (expre...
04: An Ocean Thermal Energy Converter (OTEC) pumps 200 m/s through a heat exchanger in which the temperature (expressed in Kelvins) drops by 1 %. All the heat extracted is delivered to the ammonia boiler. The ammonia temperature, THT, at the turbine inlet is equal to the mea temperature of the water in the warm water heat exchanger minus 1 K. The temperature, Tcr, of the ammonia leaving the turbine is kept at 10°C by the cooling effect of 250...
An OTEC plant utilizes the difference between the surface temperature of 30C and dumps 580 kJ...
An OTEC plant utilizes the difference between the surface temperature of 30C and dumps 580 kJ of waste heat to cold deep water of 7C. a) what is the maximum efficiency that can be expected? b) The OTEC system extracts 600kJ of energy from warm surface water of 30C and dumps 580kJ of waste heat to cold deep water of 7C. What is the actual efficiency? c) Estimate the required flow rate yield 1.0MW from an ideal heat engine when...
A heat engine is proposed which is to operate between 2000 C and 500 C with...
A heat engine is proposed which is to operate between 2000 C and 500 C with a real efficiency of 35%. (a) Convert the given temperatures to Kelvin (b) Calculate the maximum efficiency(ideal efficiency) using the given temperatures (c) Will the engine perform as predicted; that is will it have an efficiency of 35%? Explain.
An open-cycle OTEC system operates with warm surface water at 24 C and surface condenser water...
An open-cycle OTEC system operates with warm surface water at 24 C and surface condenser water of 14 C from the deep cold water at 12 C. The evaporator pressure is 0.0264 bar that corresponds to a saturation temperature of 22 C, and the condenser pressure and temperature are 16 C and 0.0182 bar. The turbine efficiency is 0.83. If the turbine is to extract 100 kW, determine the system efficiency and the warm water, cold water, and turbine mass...
(heat engines) Let us propose that we use geothermal energy to drive a heat engine. Let...
(heat engines) Let us propose that we use geothermal energy to drive a heat engine. Let us also assume that we find a geothermal well under the Pacific not too far off shore. We are going to extract hot water from the well (at 940 C) and expel the waste heat at the ocean's surface (at an average constant temperature of 14° C.) a) What is the maximum possible efficiency of a heat engine operating between these two temperatures? b)...
Please answer part D only. [576 Points) DETAILS PREVIOUS ANSWERS SERPSE 10 21.4.P.013. IY NOTES ASK...
Please answer part D only.
[576 Points) DETAILS PREVIOUS ANSWERS SERPSE 10 21.4.P.013. IY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are working on a summer job at a company that designs non-traditional energy systems. The company is working on a proposed electric power plant that would make use of the temperature gradient in the ocean. The system includes a heat engine that would operate between 20.0°C (surface water temperature) and 5.00°C (water temperature at a depth of about 1...
(b) An ocean thermal gradient electric generating system (OTEC) is proposed for siting in Oman. This system would operate a heat engine driven by heat flow from warm ocean water (cooled from 27°C to 25 °C in the heating heat exchanger of the system), and cooled by heat flow to cold ocean water (which is heated from 3 °C to 5 C in the cooling heat exchanger of the system). The ocean water used in the different parts of the...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The system uses the temperature gradient between the surface water that is heated by the sun and much colder deep seawater to produce electricity. For more details on how the plant works, click here: OTEC Hydropower Explained a. If the temperature of the surface water is 34.9°C and the temperature of the deep seawater is 6.9°C , determine the maximum (Carnot) efficiency of the system....
04: An Ocean Thermal Energy Converter (OTEC) pumps 200 m/s through a heat exchanger in which the temperature (expressed in Kelvins) drops by 1 %. All the heat extracted is delivered to the ammonia boiler. The ammonia temperature, THT, at the turbine inlet is equal to the mea temperature of the water in the warm water heat exchanger minus 1 K. The temperature, Tcr, of the ammonia leaving the turbine is kept at 10°C by the cooling effect of 250...
(heat engines) Let us propose that we use geothermal energy to drive a heat engine. Let us also assume that we find a geothermal well under the Pacific not too far off shore. We are going to extract hot water from the well (at 940 C) and expel the waste heat at the ocean's surface (at an average constant temperature of 14° C.) a) What is the maximum possible efficiency of a heat engine operating between these two temperatures? b)...
Please answer part D only.
[576 Points) DETAILS PREVIOUS ANSWERS SERPSE 10 21.4.P.013. IY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You are working on a summer job at a company that designs non-traditional energy systems. The company is working on a proposed electric power plant that would make use of the temperature gradient in the ocean. The system includes a heat engine that would operate between 20.0°C (surface water temperature) and 5.00°C (water temperature at a depth of about 1...
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