For Mushroom bed cooling, heat exchangers are placed directly underneath the compost layer. At the beginning of the cultivation period, the heat exchangers cool the compost directly at the bottom of the cultivation bed, which means the air temperature in the cultivation cell can remain higher than when no bed cooling is used. As a result, the mycelium grows faster through the casing soil, shortening the growing time. At the end of the cultivation period, the compost can be heated with the heat exchangers to increase the growing activity.
The best temperature for mycelium to grow is 25ºC. Due to the compost's own activity, and by adding supplements to the compost, the temperature of the compost rises above 25°C. Mushroom growers correct this by lowering the temperature of the cell air to 18°C. However, this is not optimal because mycelium grows better if the cell air temperature is around 22°C. Using mushroom bed cooling, the temperature of the compost layer can be controlled directly so the cell air temperature can be higher. As a result, the mycelium grows faster through the casing soil, and mushroom cultivation time is reduced by a few days.