• The KSFM Journal of Fluid Machinery
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• v.14 no.2
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• pp.85-86
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• 2011

• The KSFM Journal of Fluid Machinery
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• v.13 no.1
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• pp.78-80
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• 2010

• The KSFM Journal of Fluid Machinery
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• v.13 no.5
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• pp.58-63
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• 2010

Optimal operation of turbo blowers connected in serial is analyzed by experimental measurements and numerical simulation with three-dimensional Navier-Stokes equations. The turbo blower system considered in the present study is widely used for the refuse collection system. Design optimization of the turbo blower using some design variables is also studied to enhance the performance of the blower. Throughout numerical simulation, it is found that the input energy reduction by optimal operation of the turbo blowers with the proper changes of the rotor's rotating frequency can be reduced a input energy for operating the blower system compared to the conventional on-off operation method theoretically. It is also found that the optimal design method is effective to enhance the performance of the turbo blower.

• Bulletin of Korea Environmental Preservation Association
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• s.400
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• pp.32-35
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• 2012

그간 환경시설분야의 공무원, 공공기관 및 산업체종사자 그리고 연구계 및 학계 전문가들이 해당분야의 기술발전과 제도개선을 위해 부단히 노력하신 분들을 중심으로 유체기계공업학회 생활폐기물 관로이송설비분과와 한국환경기계기술자협회(KEMEA)의 회원들이 모여 효율적인 기술정보 교류체계를 구축하고 서로의 삶의 질을 향상시키고자 협회의 필요성이 대두되었습니다. 협회를 통해 환경자원의 가치와 중요성을 부각시키고 재활용과 신재생에너지로서의 활용방안 및 기술을 선도해 나가고 법적 제도개선을 지원하고 회원사간의 단합된 모습으로 공생발전을 이끌어 나가고자 본 협회가 창립되었습니다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.34 no.9
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• pp.843-850
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• 2010

This In this paper, we describe the performance characteristics of a turbo blower as a function of the shape of the volute casing: expansion diameter and width of the volute casing. The turbo blower considered in the present study is mainly used in a refuse collection system. The flow characteristics inside the turbo blower were analyzed by a three-dimensional Navier-Stokes solver and compared with experimental results. The distributions of pressure and efficiency obtained by numerical simulation were in good agreement with those determined experimentally. Throughout the numerical simulation of the turbo blower, the blower performance was enhanced by decreasing the local losses in the blade passage and the outlet flow. The efficiency and pressure for the design flow condition were enhanced by about 3% and 2%, respectively, compared to the efficiency and pressure of the reference blower. Detailed flow analysis was performed using the results of the numerical simulation

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.3
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• pp.301-307
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• 2011

Turbo blowers are mainly used in refuse collection systems. We discuss blower performance in relation to the angle of the inlet vane installed at the upstream of the blower. The flow characteristics of the components are analyzed by three-dimensional Navier-Stokes analysis and compared to experimental results. A two-stage serially connected turbo blower is introduced to analyze the performance experimentally. Throughout the experimental measurements and the numerical simulation, the distorted inlet velocity generated in the small vane angle reduces the performance of the blower, because of the local leading-edge separation and the resulting non-uniform blade loading. We also perform a detailed flow analysis using the results obtained in the numerical simulation.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.10
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• pp.1067-1073
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• 2011

This paper describes the performance of a centrifugal fan used for refuse collection systems according to the chord length of the splitters installed near the blade suction and pressure surface sides. The fan performance is analyzed by three-dimensional Navier.Stokes analysis and is compared to the results obtained experimentally. Throughout the numerical simulation of the fan with splitters, it is found that the reverse-flow region observed near the suction side of the blade can be reduced by installing a splitter. The fan performance is successfully improved by controlling the chord length of the splitter installed near the blade suction side. Under the designed flow condition, the efficiency and pressure of a fan with splitters increase by up to 4% and 18%, respectively, compared to the reference fan.