Wageningen University & Research developed a model, the “Energy Balance in a Mushroom Production Unit”, which calculates the energy use per m2 per hour as a function of the ambient temperature, the Relative Humidity (RH) and the ventilation airflow, as well as the required conditions inside the production unit (temperature, RH and CO2-concentration). Thus, energy use can be calculated per production phase, per production cycle and per year. Results are in line with data from companies participating in the Energy Monitor of the Dutch Mushroom Sector from 2007 to 2018. The model explains the observed huge differences between companies as well: small variations in ambient temperature and RH and in conditions in the production unit, including the activity of the compost (in terms of CO2-production), result in big differences in energy use for cooling or heating, amounting to a factor of 2 – 5. Some findings are that during mycelium growth energy use is lowest when ambient temperature is 2oC. During the first flush energy use is lowest when the ambient temperature is 14oC. At a higher or lower temperature energy use is increased strongly due to cooling and heating respectively.
|Name||Rapport / Stichting Wageningen Research, Wageningen Plant Research, Business unit Glastuinbouw|