Lesson 7 Synchronous Generator Cooling Hydrogen Purity Youtube Synchronous generator, power generation ,طرق تبريد المولدات الكهربائية باستخدام الهيدروجين. Synchronous generator, power system protection,methods of coolbg generators,.
Lesson 5 Synchronous Generator Cooling Hydrogen Purging And Charging Synchronous generator,generator cooling hydrogen,using hydrogen to cool synchronous generator. Hydrogen cooling of a synchronous generator or alternator. hydrogen gas is used as cooling medium for cooling the alternators because of its superior cooling properties. the hydrogen cooling of the alternators requires completely seated circulated system. mainly, oil seated glands are used between shaft and casing of the alternator. Hydrogen purity must be maintained above the ufl (upper flammability limit) of 75%. most generators have alarms set at levels greater than 90% with an automatic trip and purge if purity falls below 88%. additionally, hydrogen purity effects efficiency. air is 14 times denser than hydrogen. when the purity of hydrogen in a power generator casing. In the hydrogen cooling of a synchronous generator, hydrogen gas is used for cooling because hydrogen gas has excellent cooling properties. the power loss (i 2 r loss) in the form of heat loss occurs in a generator when the generator delivers power to electrical equipment. the life of the generator depends on how efficient the cooling system it.
Lesson 2 Hydrogen Cooled Synchronous Generator Youtube Hydrogen purity must be maintained above the ufl (upper flammability limit) of 75%. most generators have alarms set at levels greater than 90% with an automatic trip and purge if purity falls below 88%. additionally, hydrogen purity effects efficiency. air is 14 times denser than hydrogen. when the purity of hydrogen in a power generator casing. In the hydrogen cooling of a synchronous generator, hydrogen gas is used for cooling because hydrogen gas has excellent cooling properties. the power loss (i 2 r loss) in the form of heat loss occurs in a generator when the generator delivers power to electrical equipment. the life of the generator depends on how efficient the cooling system it. The hydrogen cooling system is uneconomical for such applications. direct water cooling is used for the synchronous generator rating 500 mw and above. in very large turbo generators, hydrogen cooling is used for the cooling of the rotor and the stator winding is cooled with direct demineralized water. the centrifugal pump circulates the water. Limitations of hydrogen cooling. the frame of the hydrogen cooled alternator is more costly because of the necessity to provide explosion proof construction and gas tight shaft seals. means are necessary to admit hydrogen to the alternator without creating an explosion. sourcing the air with co 2 and then admitting hydrogen.
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