mushroom growing

[nh3simman]

I would recommend a chilled water system, or better yet, a four pipe system, with a chiller having heat recovery, so that heating, cooling and dehumidification (if necessary) can take place and be modulated. It may be possible to save money by using relatively high temperature water system in pipes running under the mushroom beds.

This is exactly my thinking.

The chiller system gives a nice capacity buffer in a storage tank and allows mixing to modulate the supply water temperature.

In the current DX system, the low suction causes loss of moisture by condensation and they expect the room to maintain a fixed 85% rh!