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인자 분석을 통한 플라즈마 디스플레이 패널(Plasma Display Panel) 텔레비전에서의 냉각 홴 시스템 소음 저감
김규영(Kim, Kyu-Young),최민구(Choi, Min-Goo),이덕주(Lee, Duck-Joo) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.2
The present experimental study deals with noise reduction and improvements in cooling performance in a plasma display panel (PDP) television (TV). The main ideas of the fan system noise reduction are maintenance of uniform inflow condition and reduction of the system loss, ${\Delta}P.$ The discrete noise is mainly related with the inflow condition therefore removing the structure which distorts inflow makes the discrete noise reduction. The broadband noise in PDP TV is related with the system losses which result from the presence of the fan downstream obstacle, PDP rear case. Through the modification of the distance and preventing the leakage flow between the fan and rear case, we can obtain the system loss and broadband noise reduction. Additionally we can reduce fan rotating speed because of increased flow rate which obtains from the reduction of system loss (resistance). Finally, 4.2 dB(A) noise reduction and $10\%$ increase in flow rate are achieved. From these results, we show that the reduction of system loss is the most effective way of the fan system noise reduction.