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Product Line

Product Line
Product Line Capacity (RT)
ETI VSD 150 to 700
AART 230 to 5,000 (2,500 to 5,000 Dual Compressor)
AART-I VSD 230 to 4,000 (2,000 to 4,000 Dual Compressor)
Low Temperature Use (-5°C)
AART-H / AART-H-I VSD
190 to 2,200 (1,100 to 2,200 Dual Compressor)
Heat Recovery Use
AART-HR / AART-I-HR VSD
210 to 1,700

VSD: Variable Speed Drive

Meeting the diverse needs of customer

Temperature
Chilled Water Leaving Temperature AART & AART-I (Note 1)
Lower Limit Minus 5°C(Low Temperature Use(Brine)
Cooling Water Entering Temperature AART & AART-I (Note 1)
Lower Limit 12°C
Hot Water Leaving Temperature AART & AART-I (Note 1)
Higher Limit 45°C (Note 1) (Heat Recovery Use)

Note 1: As Option

Load
Load Control Range in a Continuous Run AART-I & ETI 100% to close to 0% (Note 1)
AART 100% to 10% (Note 1)

Standard: ETI 100% to 10%, AART & AART-I 100% to 20%
Note 1: As Option

Flow Rate
Chilled Water / Cooling Water Flow Rate Control Range AART, AART-I & ETI (Note 1)
100% to 50% (Variable Flow Rate)
Standard: 100%
Chilled Water Flow Rate Control Range AART, AART-I (Note 1)
100% to 150% (Excess Flow Rate)
Standard: 100%

Note 1: As Option

HFC-134a Refrigerant

MHI centrifugal chillers use refrigerant, HFC-134a that is chlorine free refrigerant with zero ozone depletion potential.

HFC-134a Refrigerant
Refrigerant HCFC-123 HCFC-22 HFC-245fa HFC-134a
Ozone Depletion Potential ODP (Note 1) 0.012 0.034 0 0
Global Warming Potential GWP (Note 2) 77 1,810 1,030 1,430
Total Equivalence Warming Impact TEWI (Note 3) (ton CO2) 9,773 10,854 9,475 8,481
Theoretical COP 7.41 6.93 7.39 7.30
Note Low pressure
Refrigerant
Low pressure
Refrigerant
  • Note 1: UNEP 2000 total record
  • Note 2: IPCC 2007
  • Note 3: Total equivalence warming impact, 750 RT, 4,000 hours run per years for 15 years, sum of the direct (chemical emissions) and indirect (energy use) emission of greenhouse gases
  • COP: HCFC-123=5.4, HFC-134a=6.4, HCFC-22=5.0

Idealized Refrigeration Cycle

System & P-h DiagramIdeal desing of refrigeration cycle with two-stage compressor, Economizer and Sub-cooler contributes to improved efficiency.

 



Business contact: Air-Conditioning & Refrigeration Systems , Air-Conditioning & Refrigeration Solutions Division +81-3-6716-4272

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