I would have thought good ventilation would bring much colder air in from the outside thereby mitigating the benefits of good insulation. How do modern houses deal with this issue or is good ventilation much less important and I expect? (I’m in the UK so we don’t have blown air heating/cooling as standard here)
In: Engineering
One way is a heat exchanger.
If you let two fluids com in contact with the same heat conducting object without mixing heat is transfered between them. The warmer fluid get coolare and the cooler get warmer. Optimalt they both reach the same temperature.
If the two fluids are the inside and outside air you have now heated the outside air a bit and save energy.
You can also use a heat pump that extract heat from the air you let out it use electricity but will be mor efficient compared to if you use outside air as the heat source.
This works in reverse too if the i side is cooler then the outside and you use a AC
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