Knowledge

Fundamentals and practical knowledge on air-to-air heat recovery with plate heat exchangers - from the team behind the Ærocore configurator.

• Air-to-air heat exchangers: how they work, designs, sizing How gas-to-gas plate heat exchangers recover heat from extract air: the principle, cross-flow and enthalpy, materials, and the route to a sizing.
• Condensate and the risk of freezing in heat recovery Why condensate occurs in heat recovery, when it freezes and what helps: dew point, choice of material, bypass and defrost strategies.
• Cross-flow or enthalpy: which design fits? Cross-flow transfers heat, enthalpy transfers moisture as well. The comparison shows the strengths, limits and selection criteria of both designs.
• Heat recovery in ventilation: efficiency and economics How much heating energy ventilation heat recovery really saves: recovery against fan power, humidity, operating hours, and the limits of the calculation.
• Pressure drop and fan power: the underrated variable Why the permissible pressure drop dominates the sizing: its link to fan power and operating cost, typical values, and how to choose the limit.
• Temperature recovery: what it tells you and what it does not Temperature recovery describes how much of the possible temperature difference a heat exchanger recovers. Definition, influences and the usual pitfalls.