Analysis
Climaveneta S.p.A

ECONOMISER

The economiser circuit (ECO) enhances compressor efficiency by increasing performance without the need to install a larger compressor.
In practice, the economiser is a heat exchanger installed downline from the condenser which is used to subcool the condensed liquid.
To achieve this, part of the flow of refrigerant from the condenser enters the economiser via an expansion device and evaporates upon absorbing heat from the counterflowing liquid refrigerant (subcooling).
The compressor takes in the heated vapour through a special door located on its body, midway between the main inlets and outlets.
This solution achieves a significantly higher cooling power thanks to the additional subcooling of the liquid.
The power draw of the compressor increases less than efficiency because the overall compression process becomes more efficient, partly due to:
-the increase in suction pressure
-the reduction in temperature due to the main flow being mixed with the flow from the economiser and consequently decreasing the final compressor outlet temperature.
The advantages of using the economiser are particularly evident at elevated condensation temperatures.