Ocean thermal energy conversion is a process that uses the temperature difference between the warm surface water of trop

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Ocean Thermal Energy Conversion Is A Process That Uses The Temperature Difference Between The Warm Surface Water Of Trop 1 (29.12 KiB) Viewed 72 times

Ocean thermal energy conversion is a process that uses the temperature difference between the warm surface water of tropical oceans and the cold deep- ocean water to run a heat engine (Eigure 1) shows a typical decrease of temperature with depth below the surface in tropical oceans. In the heat engine, the warmer surface water vaporizes a low-boling-point fluid, such as ammonia. The heat of vaporization of ammonia is 260 cal/g at 27°C, the surface-water temperature. The vapor is used to tum a turbine and is then condensed back into a liquid by means of cold water brought from deep below the surface through a large intake pipe. A power plant producing 10 MW of useful power would require a cold seawater flow rate of about 30,000 kg/s Figure 0 5 10 15 20 25 30 100 200 300 400 500 600 700 NOO 900 1000 Depth (m) C 1 of 1 Part A What is the change in entropy of the ammonia vaporized per second in the 10 MW power plant, assuming an ideal Camot efficiency of 6.5%? O+6x10⁰ J/K per second O +5x10 J/K per second O +1x10 J/K per second 00 Submit Request Answer Provide Feedback Next >