ᐅ Mechanical ventilation with heat recovery instead of solar thermal energy?
Created on: 6 Jun 2018 01:41
K
Kabelmodem87
Hello,
We are planning a new build that will be heated with a natural gas boiler, and we would like to install a mechanical ventilation system with heat recovery.
For natural gas heating, regulations require that 15% of the heating demand must be covered by “renewable energy.” Is it possible to meet this requirement with a mechanical ventilation system, thereby possibly avoiding the need for solar thermal panels on the roof?
Has anyone had experience with this? Would such a system even qualify as “renewable energy”? After all, heating costs are reduced, although the electricity demand increases slightly...
Thanks in advance.
We are planning a new build that will be heated with a natural gas boiler, and we would like to install a mechanical ventilation system with heat recovery.
For natural gas heating, regulations require that 15% of the heating demand must be covered by “renewable energy.” Is it possible to meet this requirement with a mechanical ventilation system, thereby possibly avoiding the need for solar thermal panels on the roof?
Has anyone had experience with this? Would such a system even qualify as “renewable energy”? After all, heating costs are reduced, although the electricity demand increases slightly...
Thanks in advance.
K
Kabelmodem8710 Jul 2018 22:59EdStark schrieb:
So someone was trying to sell you an expensive mechanical ventilation with heat recovery system, right? I wasn’t aware that such a system is mandatory under the energy saving regulations.I think she means that even with a mechanical ventilation with heat recovery system and natural gas, they still had to install solar thermal.
K
Kabelmodem8710 Jul 2018 23:00ufr123 schrieb:
I find the idea very interesting since we are in a similar situation.
Have you had it calculated in the meantime?No, but it will happen in the next 8 weeks. I’m happy to share the details here then. Hopefully, we can manage without solar power.
Kabelmodem87 schrieb:
I think she means that despite having controlled residential ventilation with natural gas, they still had to add solar thermal.Exactly, but we are very happy with the controlled residential ventilation. I didn’t expect that, first, the system would be so quiet, and second, that the air would be so fresh without it feeling cold. It’s really great to have fresh air in the bedroom in the morning without having to ventilate for hours.
Best regards
Sabine
K
Kabelmodem8711 Jul 2018 20:36Curly schrieb:
Exactly, but we are very happy with the controlled residential ventilation system. I didn’t expect 1. the system to be so quiet and 2. the air to be so fresh without it getting cold. It’s really great to have fresh air in the bedroom in the morning without having to ventilate for hours.
Best regards
SabineYes, exactly for this reason I really want to have one. I will probably be working night shifts for another 30 years, with windows closed and external blinds during the mornings. The oxygen level drops significantly after 3–4 hours... I’m already looking forward to better nights than in my rented apartment.
Why couldn’t you leave out the solar system? Did you try? Did the calculations not add up?
K
Kabelmodem8711 Jul 2018 22:04Mycraft schrieb:
Omitting solar is rare because houses are often calculated very tightly beforehand, and with solar included in the "basic equipment," they barely meet the minimum requirements.Ah, okay. Our architect, who is also a building energy consultant, says it’s generally possible... well, we’ll see how he plans to do it.
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