3 ms·

My parents and grandparents have something ecological, made probably in 1950 or 1960 and in late 1990s https://en.wikipedia.org/wiki/Ground-coupled_heat_exchang

• TeMPOraL 5y ago
  > It doesn't need plastic or electricity to work Not even fans to move the air around? That's neat, fully passive systems are awesome - though not always easy or possible. In context of not blowing hot air out, the useful nugget here is heat exchange with the ground - which can also be used with a heat pump. Plenty of homes are built with such systems. But it's tricky to do in a multi-floor apartment complex, I haven't heard of any using ground-coupled heat exchangers. Perhaps some new constructions? Of course, while the ground has amazing thermal capacity, it has rather poor thermal conductivity - for larger loads, your exchanger will need to be large and buried deep. This might be another factor limiting application in cities.
  • agilob 5y ago
    >Not even fans to move the air around? Only in the hottest days when all room were occupied, as I no longer live there with my siblings, they no longer have fans there. There was one bath-vent-like-fan before. >fully passive systems are awesome - though not always easy or possible. I wouldn't install this in the UK as gardens are tiny, full of concrete and air humidity is high. Works well in central Poland. >or larger loads, your exchanger will need to be large and buried deep. This might be another factor limiting application in cities. yes, you need trees around, and grass not concrete or bricks.