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50 TRG-TRC010-EN
notes
period six
Review
Period 4 described the general maintenance requirements of a centrifugal water
chiller, including:
■ Recommended data for a daily log
■ Required and recommended maintenance for mechanical components
■ Recommended maintenance for heat transfer surfaces
■ Required analyses for the oil and refrigerant
Period 5 presented several considerations in the application of centrifugal water
chillers. These included condensing temperature control for water-cooled
chillers, constant or variable evaporator-water flow, short evaporator-water
loops, heat recovery, free cooling, and equipment certification standards.
Review—Period 4
▲ Maintenance considerations
◆ Operating log
◆ Mechanical components
◆ Heat-transfer surfaces
◆ Fluid analysis
Figure 68
Review—Period 5
▲ Application considerations
◆ Condensing temperature control
◆ Constant or variable evaporator-water flow
◆ Short evaporator-water loops
◆ Heat recovery
◆ Free cooling
◆ Equipment certification standards
Figure 69
trgtrc010_book.book Page 50 Wednesday, September 1, 1999 10:42 AM