From Sensidyne, LP
Most large electrical generating equipment has a pressurized direct or indirect hydrogen cooling system for the generator. Hydrogen conducts heat 7 times better than aire, making it an ideal coolant for the generators. Its low density (0.07 relative to air of 1.0) minimizes windage losses, as long as purity is maintained above 90%.
Analytical equipment is used to measure and control h2 purity, as well as measure CO2, which is used to purge the generator of air during start-up, and purge the hydrogen during shutdown. This prevents the formation of a flammable mixture.
Direct h2 cooling systems circulate the hydrogen through the generator shell for heat dissipation, although, and external heat exchanger is sometimes employed.
Products & Services
Topics of Interest
The low density and high thermal conductivity of hydrogen make it superior to air for use as a cooling fluid in electric power generators. Hydrogen significantly reduces the windage friction losses...
Making the gas cheaply will get around the first roadblock to widespread hydrogenpoweredcars The Titan H2 generator from Teledyne Energy Systems Inc., Hunt Valley, Md., electrolyzes an alkaline...
2.2 Psychrometry of Inlet Air Cooling The two most prevalent types of inlet air cooling are direct contact evaporative cooling and indirect cooling using refrigerant or fluids with cooling coils.
GENERATOR SYSTEMS The following sections describe the excitation, cooling, and lubricating systems associated with the generator. Excitation The excitation system controls the output voltage...
INTRODUCTION TO MACHINERY PRINCIPLES (CHAP. 2) 1. How can a generator act as a motor? 2. What is the sum of the torques on the shaft of a turbine generator or a pump...