Optimization design of large indoor cooling system in edible mushroom cultivating plants

Authors Li Li; Li Hong; Zhao Ruijie; Xiang Qingjiang

Journal Journal of Drainage and Irrigation Machinery Engineering , 2019,11:37

Abstract A better understanding of distribution uniformity of ambient temperature in an edible mushroom cultivating plant is necessary to improve mushroom yield and expand scale of mushroom production.An edible flammulina cultivating plant from Shanghai was selected as study object,its three-dimensional geometrical model was built and steady CFD heat transfer simulations were performed accordingly.The effectiveness and feasibility of these simulations were proved by comparing the simulated results with the experimental data.Four designs were proposed,and the optimal one was decided by comparing their simulation results.It is shown that about 1.0 ℃ difference in ambient temperature predicted from the experimental observations is found at 0.1 m,1.8 m and 3.5 m elevations,suggesting basic agreement between simulation and experiment.Design 1 is mostly favorable to improvement in both air velocity distribution and ambient temperature uniformity.However,the nozzle devices installed in it can consume extra power,thus energy saving purpose is not achieved eventually.The results can provide guidance for production operation of edible mushroom cultivating plant and have significance in increasing the yield of edible mushroom.