The Swedish innovation Lepido by Enjay, is a heavy duty heat exchanger developed specifically for polluted airstreams. Using Lepido makes energy recovery from hostile environments not only possible, but also profitable.
Efficiency Redefined

Your Industrial Heat Exchanger Solution


Why Lepido?

In challenging ventilation environments – just look at the pictures below - you need a heavy-duty solution to handle all that soot and grease. Lepido, designed to operate robustly in polluted air streams, can be deployed in a wide range of different process ventilation systems. The pollutants may vary, and – to name a few examples – range from grease and soot in restaurant ventilation, to wax and lint in industrial laundries, to residual lackard and sawdust in woodworking industries and back to grease and water vapour in food processing and snacks production.

Lepido is currently being used by commercial kitchens, production facilities around Europe to recapture excess heat in polluted exhaust air. At Europes biggest pancake factory located in the south of Sweden, the system will recover 1,500,000 kWh per year.
Our Patent

Particle Repellent Geometry

Lepido recovers energy from polluted airstreams with up to 68% efficiency thanks to our patented Particle Repellent Geometry  (PRG®)

How PRG works

Lepido, being a heavy-duty heat exchanger, is larger compared to a traditional heat exchanger to make room for our patented geometry of the recovery coils. The space between the coils is much larger than between fins of a traditional heat exchanger.

The result is a unique airflow pattern where most of the particles can pass through the heat exchanger instead of sticking to the coils. This slows down the build-up on the coils and makes the air pressure drop minimal, even if a coating has formed.

Lepido, being coil-based with one hundred percent counter-current and multiple fluid patterns, has the same heat transmission element surface area as a traditional heat exchanger.


Particle Repellent Geometry

The aerodynamic configuration of the recovery coil causes the majority of the particles of grease and soot to pass through the unit without getting stuck to the coils.
Product Data
Brine connections
Counterflow configured brine connections
Universal fitting. Bolted joint or clinch slide guide joined.
Particle Repellent Geometry. The aerodynamic configuration of the coils allows the majority of the particles to pass straight through the battery, without getting stuck to the coils.
Follows the most stringent fire protection regulations. All stainless steel, durable as the house it’s situated in. The housing is simply a part of the grease duct; Installation made easy.
Drains continuous condensation as well as the minuscule amount of grease released by the APC. The grease drains down to the restaurant’s grease trap.
  • Use cases

    Areas of usage

    With our innovative PRG approach, the majority of particles breeze through the heat exchanger effortlessly, avoiding any obstructions.

    The applications of Lepido includes but is not limited to:

    • Restaurants
    • Fast-food establishments
    • Laundries
    • Food processing facilities
    • Woodworking workshops
    • Chemical industries
    • Food courts
    • Join us in revolutionizing and reusing waste heat across diverse industries