Heat Pump Air-Conditioning System

DENSO

Cooling
Dehumidification heating
Gas injection heating

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Outer heat exchanger

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Electric expansion valve

Electric expansion valve
Compact gas-liquid separator
Accumulator

The compact gas-liquid separating valve separates gas and liquid using the cyclone turbulence effect and the device can be made compact since refrigerant reservoir is not necessary.
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Electric compressor with gas injection function

The compressor is a scroll-type Denso unit with a refrigerant gas injection port added. The high-density vapor refrigerant is injected into the compressor to increase the mass flow rate and thus improves heating performance.

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