ᐅ Is a preheating coil necessary – or is an enthalpy exchanger a better option?
Created on: 20 Jul 2018 07:32
W
WickieAccording to our invoice from the plumbing company, a pre-heating coil was installed in the mechanical ventilation with heat recovery system. However, we never discussed this beforehand, and I still find it unnecessary.
We would rather consider installing an enthalpy exchanger afterwards, if possible. If I understand correctly, this also helps prevent the system from shutting down immediately to protect against freezing at around -3°C (27°F).
We built with Poroton blocks and applied double-layered lime plaster, so we are already noticing that the indoor climate is very comfortable – dry, humid, or muggy conditions don’t seem to make much difference. However, we have not moved in yet and are still in the final stages.
That said, we often hear that dryness can become a serious issue without an enthalpy exchanger. Still, we thought we would wait and see how things develop before installing one. But then there is the risk that the system will freeze without a pre-heating coil?
Did I misunderstand something? Do your systems include pre-heating coils and/or enthalpy exchangers?
We would rather consider installing an enthalpy exchanger afterwards, if possible. If I understand correctly, this also helps prevent the system from shutting down immediately to protect against freezing at around -3°C (27°F).
We built with Poroton blocks and applied double-layered lime plaster, so we are already noticing that the indoor climate is very comfortable – dry, humid, or muggy conditions don’t seem to make much difference. However, we have not moved in yet and are still in the final stages.
That said, we often hear that dryness can become a serious issue without an enthalpy exchanger. Still, we thought we would wait and see how things develop before installing one. But then there is the risk that the system will freeze without a pre-heating coil?
Did I misunderstand something? Do your systems include pre-heating coils and/or enthalpy exchangers?
A lot has already been said about this.
Without enthalpy recovery and preheating coil = icing and dry air
Without enthalpy recovery with preheating coil = dry air and high electricity costs
With enthalpy recovery and preheating coil = comfortable air and high electricity costs
With enthalpy recovery without preheating coil = comfortable air and risk of icing
Without enthalpy recovery and preheating coil = icing and dry air
Without enthalpy recovery with preheating coil = dry air and high electricity costs
With enthalpy recovery and preheating coil = comfortable air and high electricity costs
With enthalpy recovery without preheating coil = comfortable air and risk of icing
