VENTS PR series for rectangular ducts

PR plate heat exchanger with X-shaped air passage designed for exhaust air heat recovery in conditioning and ventilating systems. The heat exchangers are connected directly to the rectangular ducts both with parallel and perpendicular or diagonal ducting at 45°. Various connection modification are possible due to bend fittings which shall be ordered in the required quantity. The transported air shall not contain solid, fibrous, aggressive and explosive impurities.

The heat exchanger casing is made of galvanized steel. The surface of the heat exchanger appears as a package of thin aluminium plates to ensure the efficient heat exchange. Provision is made for collecting some quantity of the condensate which tends to appear at exhaust surface at the bottom removable panel. PR heat exchangers equipment list includes connecting pipe on the bottom panel for condensate removing.

Efficiency is the basic characteristics of the plate heat exchanger, i.e. performance as well as air resistance in the duct.

The thermal efficiency is calculated as follows:

ts - supply air temperature after heat recuperation;
t_i - intake air temperature before heat recuperation;
t_e - extract air temperature before heat recuperation.

1. PK bend

Designed for easy mounting of the heat exchanger in any modifications of the air duct. Bend designation PK 600 х 300.

2. Summer block VL

For the summer period the heat exchanger can be replaced with the summer block VL which performs no heat recovery but reduces pressure loss by 10%. It is applied in systems without by-pass at the inlet and in systems with no cooling.