Counterflow plate heat exchangers
Air flow through counterflow plate heat exchanger
Operation
Gotthard plate heat exchangers transfer energy through thin separating plates. This variant is characterised by very efficient heat transfer due to the counterflow and crossflow sections. The warm and cold air streams pass each other in crossflow. Energy is transferred between the air streams purely by heat conduction as a result of the temperature difference.
The exchanger package consists of specially formed aluminium plates. Their profile is an optimum design resulting from detailed tests for temperature efficiency, pressure drop and stability. There are different plate sizes, which are formed with different profile depths, i.e. for different plate spacings and thus different efficiency values.
The plates are connected by a double fold. This gives a several-fold material thickness at the air inlet and outlet, which provides the exchanger package with particularly high stability and leak-tightness.
Counterflow plate heat exchanger design
Gotthard (G type)
The Gotthard is our compact plate heat exchanger using a crossflow and counterflow principle. As is the case with all our plate heat exchangers, it ensures a low pressure drop for energy-saving operation. Its unique stability, compact casing dimensions and the clever plug and play concept enable smaller, compact air handling units that are quick to install. For larger widths, a middle bypass can also be implemented.
Areas of application
Hoval Gotthard plate heat exchangers are energy recovery units for installation in ventilation and air-conditioning units. The suitability of the exchangers for use both in general ventilation technology and in hygiene applications is certified by independent test institutes.
Application limits
- Size: 055–085 (individual), 110–170 (combi)
- Air flow rate from approx. 200 to 24000 m³/h
- Width from 200 to 2850 mm
- Differential pressure max. 2000 Pa
- Temperature
Exchanger: -40…90°C
Dampers: -40…80°C
We remain tight under high pressure.
