Quote:
Originally Posted by ham789
I think your efficiency measurements are way optimistic for that configuration. Having very low air flow certainly
contributes, but even so...
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No, it's not. It's real data from real measurements with real instruments. For instance here are the temperatures of tonight with my current configuration (the finished one):
Ext T: 3C
Internal stale air: 21,5 C
Fresh air inlet from HRV: 18,9 C
Unless my math is wrong this gives me a 85,95% efficiency. Note that I no longer have small pc fans but (at least) 180m3/h 220V ones. I could definitely declare the system as "efficient"!