Crossflow plate heat exchangers
Air flow through counterflow plate heat exchanger
Operation
Krivan and S-type plate heat exchangers transfer energy through thin separating plates. 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.
Crossflow plate heat exchanger designs
Krivan (K type)
The Krivan crossflow plate heat exchanger was developed on the basis of our tried-and-tested S plate heat exchanger. No other crossflow plate heat exchanger is as efficient as the Krivan.
Developed specifically to meet requirements for ErP compliance, it provides the best ratio on the market between high thermal efficiency and low pressure drop. Its unique stability ensures a constantly low pressure drop for energy-saving operation.
As with all of our plate heat exchangers, the clever plug and play concept helps to ensure easy planning and assembly: with identical dimensions, the Krivan is the ideal replacement for or supplement to the tried-and-tested S heat exchanger.
S type
Areas of application
Hoval Krivan and S-type plate heat exchangers are energy recovery units for installation in ventilation and air-conditioning units. They are available in different sizes. The suitability of the exchangers for use both in general ventilation technology and in hospitals
is certified by independent test institutes.
Application limits
- Size 050–120 (individual), 140–240 (block of 4)
- Air flow rate from approx. 200 to 100 000 m³/h
- Width from 200 to 4100 mm
- Differential pressure max. 2500 Pa
- Temperature
Exchanger: -40…90°C
Dampers: -40…80°C
We remain tight under high pressure.
