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TRG-TRC016-EN 23
period one
Types of Water Chillers
notes
ASHRAE/IESNA Standard 90.1–1999, Energy Standard for Buildings, Except
Low-Rise Residential Buildings, went into effect in October 1999. ASHRAE
is the American Society of Heating, Refrigerating and Air-Conditioning
Engineers and IESNA is the Illuminating Engineering Society of North America.
This standard addresses all aspects of buildings except low-rise residential
buildings. It contains specific requirements for both water chillers and
chilled-water systems.
Standard 90.1 contains minimum full- and part-load efficiency requirements
for packaged water chillers. The table in Figure 27 is an excerpt from Table
6.2.1C of Addendum J to the standard. It includes the minimum efficiency
requirements for electric vapor-compression chillers operating at standard ARI
conditions. The standard also contains tables of minimum efficiency
requirements for these chillers operating at nonstandard conditions. The test
procedure for these chillers is ARI Standard 550/590–1999. Notice that these
requirements go into effect on October 29, 2001.
ASHRAE/IESNA Standard 90.1–1999
▲ Energy Standard
◆ Building design and
materials
◆ Minimum equipment
efficiencies
◆ HVAC system design
Figure 26
standard 90.1-1999 efficiency requirements
Electric Vapor-Compression Chillers
chiller type
air cooled
water-cooled
reciprocating
helical-rotary, scroll
centrifugal
chiller type
air cooled
water-cooled
reciprocating
helical-rotary, scroll
centrifugal
capacity
all capacities
all capacities
< 150 tons [528 kW]
150 to 300 tons [528 to 1,056 kW]
> 300 tons [1,056 kW]
< 150 tons [528 kW]
150 to 300 tons [528 to 1,056 kW]
> 300 tons [1,056 kW]
capacity
all capacities
all capacities
< 150 tons [528 kW]
150 to 300 tons [528 to 1,056 kW]
> 300 tons [1,056 kW]
< 150 tons [528 kW]
150 to 300 tons [528 to 1,056 kW]
> 300 tons [1,056 kW]
minimum efficiency*
2.8 COP 3.05 IPLV
4.2 COP 5.05 IPLV
4.45 COP 5.2 IPLV
4.9 COP 5.6 IPLV
5.5 COP 6.15 IPLV
5.0 COP 5.25 IPLV
5.55 COP 5.9 IPLV
6.1 COP 6.4 IPLV
minimum efficiency*
2.8 COP 3.05 IPLV
4.2 COP 5.05 IPLV
4.45 COP 5.2 IPLV
4.9 COP 5.6 IPLV
5.5 COP 6.15 IPLV
5.0 COP 5.25 IPLV
5.55 COP 5.9 IPLV
6.1 COP 6.4 IPLV
* as of October 29, 2001
* as of October 29, 2001
Figure 27