Ductless air-conditioning system using a coanda effect and a horizontal panel for herb medicine storage in Yubari project.

This factory was built as base of herb medicine product, process and storage in Yubari, Hokkaido. It has three cold storages where 20m width, 60m depth and 6m height for keeping herb medicine. The Air-Conditioning system for this cold storage was planned based on three concepts, Economical, Reliability and Regionality. In order to achieve the purpose of this Air-Conditioning system such as to eliminate redundant storage space, to keep the room temperature and humidity as less than 15 degree or 60%, and to reduce the running cost, Ductless Air-Conditioning System using Coanda Effect and horizontal panel has been provided. CFD analysis has been used to determine the detail of this system, the number and layout of inducted-draft fans, the length of the horizontal panel, during design stage. And it was verified by actual measurement after the completion of construction. Compared to this system and original one, around 60% of electrical capacity was reduced.