ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
PHASE-CHANGE DRY/WET COOLING SYSTEM FOR POWER PLANTS
Résumé
A demonstration of an advanced water-conserving
cooling system for power plants is being
tested. The facility condenses 7.5 kg/s of turbine
exhaust steam, equivalent to about 10 MW(e). The
system uses anhydrous ammonia to transport the
reject heat. Ammonia is boiled in the steam condenser,
and then condensed by air in the cooling
tower. The system has projected total costs of
about one-half of those for corresponding commercial
systems. Two advanced air-cooled heat
exchangers that are being tested use limited
amounts of water for supplemental cooling. Water
consumption is about one-quarter the amount required
for an evaporative cooling system. The
objective of the test is to demonstrate performance
and operational feasibility under both
normal steady-state and transient conditions, and
under non-standard conditions. System response
will be determined statistically using industrial-grade
instrumentation and a computerized data
acquisition system. This paper presents pilot and
demonstration test results. System design, construction,
instrumentation, and operations and
testing are also described.