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
| 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 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
| 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.
| 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
Ideal desing of refrigeration cycle with two-stage compressor, Economizer and Sub-cooler contributes to improved efficiency.
Business contact: Air-Conditioning & Refrigeration Systems Centrifugal & Absorption Chiller Department +81-3-6716-4288
