Wet-dry cooling demonstration: A transfer of technology: Final report
Wet-dry cooling using the ammonia phase-change system, designated the Advanced Concepts Test, was tested on a large-scale at Pacific Gas and Electric Company's Kern Station at Bakersfield, California. The facility is capable of condensing 60,000 lb/h of steam from a small house turbine. Two different modes of combining dry and evaporative cooling were tested. One uses deluge cooling in which water is allowed to flow over the fins of the dry (air-cooled) heat exchanger on hot days; the other uses a separate evaporative condenser in parallel to the dry heat exchanger. A third mode of enhancing the dry-cooling system, termed capacitive cooling, was tested. In this system, the ammonia-cooled steam condenser is supplemented by a parallel conventional water-cooled condenser with water supplied from a closed system. This water is cooled during off-peak hours each night by an ammonia heat pump that rejects heat through the cooling tower. If operated over the period of a year, each of the wet-dry systems would use only 25% of the water normally required to reject this heat load in an evaporative cooling tower. The third would consume no water, the evaporative cooling being replaced by the delayed cooling of the closed system water supply.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Electric Power Research Inst. (EPRI), Palo Alto, CA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7173655
- Report Number(s):
- EPRI-CS-5016; ON: DE87005169
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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COOLING SYSTEMS
TECHNOLOGY TRANSFER
EVAPORATIVE COOLING
AMMONIA
DEMONSTRATION PROGRAMS
DRYING
WATER
COOLING
ENERGY SYSTEMS
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HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
320303* - Energy Conservation
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