Two-Stage Systems
CO 2 System
TWO-STAGE MATCHING RACKS
ADVANTAGES OF CO 2 SYSTEM
1980 HCFCs
1990 HFCs
Compressor
Compressor
R123a | R507
R22 | R123
R410A | R32
Condenser
1930 CFCs
2010 HFCs
Intercooler
Evaporator
Liquid
R1234ze R1234yf 2020 Natural Refrigerant CO 2 | NH 3 R290 | R600a
R11 | R12
Subcooler
1900 Natural Refrigerant CO 2 | NH 3
| System Features
Tailored System › Based on various customer needs, matching the most fit two-stage compression system › Flexible matching of intermediate loads based on system load characteristics › Adjust the model and quantity of high and low pressure compressors for different application types
HT & LT Loads › Just one rack for MT storage and LT quick freezers › Rapid cooling, more energy-saving
Available Parallel Racks › Application that requires large cooling capacity › Unequal parallel for precise matching › Saving initial investment
0 1
A1
| Current Non-Standard Order Scope
Natural non-toxic
ODP* = 0 Does not destroy the atmospheric ozone layer
GWP = 1 Global Warming Potential
ASHRAE safety class
Refrigerant
R507A/R404A
Carlyle- TT/TS 50HP~150HP Bitzer-HSKB 50HP~110HP 1~6 Parallel Carlyle- TS/TT/TU 50HP~188HP Bitzer-HSK 60HP~320HP 1~6 Parallel
Low pressure side
› Adopt the natural refrigerant CO 2 › Compliant with EU F-Gas regulations, not subject to refrigerant phase-out regulations › CO 2 has better heat transfer capacity and improves evaporating temp. by 2K, with higher energy efficiency › Benefit from the high cooling capacity per unit volume of CO 2 , the compressor, separator, and other equipment can be small in size, with a lower refrigerant amount required. › CO 2 is a safe medium for entering operation rooms and storages, which minimizes the risks brought by the NH 3 system, ensuring the safety of the staff and food.
High pressure side
Low pressure side evaporating temp.: -50 ° C ~ -25 ° C
Application temp. range
* ODP: Ozone Depleting Potential
15 | Industrial Heating & Cooling – Comprehensive Solutions
Industrial Heating & Cooling – Comprehensive Solutions | 16
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