1) DVI compressor
Efficient and reliable DVI (Digital Vapor Injection) compressor
coupled with vapor injection technology has been applied to
improve cooling and heating performance and energy
efficiency.
2) Vapor injection technology
Improved cooling and heating performance and COP by a new technology of two stage compression.
As injecting optimized mid-range pressure refrigerant, this technology achieved the high heating
performance and COP under the lowest temperature, which leads the industry.
3) Turbo intercooler
Turbo intercooler (Shell & tube type) improves cooling and heating COP and secures reliable operation of
installation with long piping (200m).
I-11
2
2
New technology of
DVM PLUS III, DVM PLUS III HR
P
RODUCTS
2-1. Digital hybrid system
DHS (Digital Hybrid System) is a brand new concept system composed of DVI (Digital Vapor Injection)
compressor, vapor injection technology and turbo intercooler. These 3 factors together provide highly efficient
performance.
• Increase refrigerant flow rates with a new vapor injection technology.
• Improved sub-cooling necessary for long piping installation while increasing cooling and heating performance and COP.
Â
Evaporator (ID)
More mass flow passing Indoor
unit increases heating capacity.
1st Expansion
Enthalpy (kJ/kg)
2nd
Expansion
Vapor injection reduces the liquid enthalpy in flash
tank, facilitating heat exchanger to absorb heat more.
Condenser (OD)
DVI compressor
Vapor injection
Vapor injection
Flash tank
Injection
point
Solenoid Valve
2nd
EEV
1st
EEV
❷ Subcooling liquid refrigerant
❹ Low temperature gas
refrigerant
❸ Low temp. liquid
refrigerant
❶ Saturated liquid
refrigerant
Temperature
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