Abstract
Fan performance (PQ curve) of new fan suitable for narrow space is examined. To do this measurement apparatus for small fan is newly assembled. The PQ curves of thin new fan and commercial small side flow fan are measured with different upper space. As a result, the upper space of 3mm or more is required in order to give full performance of the side flow fan. When upper space is 0mm performance of side flow fan is significantly reduced. For thin new fan, it is possible to operate under the condition of the upper space of 0mm. And, with the upper space of 0mm, fan performance of new fan is higher than commercial side flow fan.
