What can the minimal temperature of the closed loop drop to (32F or less)?
It is not common for a closed loop to drop below 32F (0C) but we would size the loop and system to try and keep the temperature above 32F(0C). Remember the warmer the ground in the start of the winter the better and the reverse is true for summer. What happens is that the ground around the loop is cooled all winter then when you go into the summer season and air conditioning is needed the ground will be very cool thereby increasing the efficiency for cooling. Then all summer you would be heating the same ground area then again when you start the winter season the ground will be warm again increasing the efficiency for the winter season.
Related Questions
- For me its not clear why it is not common to drop closed loop temperature below 32F (because equipment efficiency or something else) and how closed loop length depends on it?
- What can the minimal temperature of the closed loop drop to (32F or less)?
- What are other examples of open and closed loop control systems?
