The heat exchanger in aluminium plate with turbulence-treated surfaces is a component that creates heat exchange between two different-temperature cross flows. The exhaust fan draws exhausted air from the tunnel, forcing it through the exchanger. The heat exchange with the fresher air aspirated from workplace takes place inside the exchanger unit. The airflow from the exchanger exit tunnel is mixed with air from the tunnel’s extractor hoods and it is immediately input again into the spray booth. The air extracted from the exchanger can be fed directly into the finishing room to heat the workplace in winter season or alternatively fed back into the tunnel in summer months.
Advantages:
- Heat recovery, resulting in energy savings through use of the exchanger unit. In fact, recovery of around 50% is possible of heat that would otherwise be dispersed into the atmosphere, and its reuse to warm the air in the finishing room (in winter) or feed it back into the tunnel (in summer).
- A drop in the relative humidity rate inside the spray booth (especially in winter months), through the intake of hot air from the exchanger back into the booth, with a subsequent improvement in finished product quality.
- Air conditioned on entry into the spray booth, exploiting the temperature of the air discharged from the exhaust fan.
- Reduced low pressure in the finishing room resulting in an improved workplace microclimate.