Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Chen, Genglin; Xu, Wei; Zhao, Jianwei; Zhang, Haipeng

doi:10.3390/en11010162

Cited by 9 publications

(5 citation statements)

References 22 publications

(26 reference statements)

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“…The fan exergy destruction is calculated from Equation (18). In this equation, for a given steam system load and regardless of the ambient temperature, two terms remain constant: the air mass flow rate and the fan driving power.…”

Section: Resultsmentioning

confidence: 99%

Energy and Exergy Analyses of Forced Draft Fan for Marine Steam Propulsion System during Load Change

Mrzljak

Blecich

Anđelić

et al. 2019

JMSE

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A forced draft fan, used for the supply of combustion air into the steam generator of the conventional liquefied natural gas (LNG) carrier was analyzed from the aspect of energy and exergy. The power delivered from the induction motor to the fan was calculated using the manufacturer’s data. The most significant impact on the fan energy power losses is from the air temperature difference between the fan outlet and inlet. The fan energy power losses are inversely proportional to the fan energy efficiency, and the values are between 19.9% and 63.4%, for the entire range of observed steam system loads. The fan exergy destruction depends primarily on the driving power and on the air mass flow rate. At higher loads, an important influence on the fan exergy destruction is from the air pressure at the fan outlet. The exergy efficiency change of the analyzed fan, for the range of observed steam system loads, is directly proportional to the rate of change in the air mass flow, whereas the obtained values of exergy efficiency are between 5.10% and 53.93%. The impact of ambient temperature on the fan exergy destruction and exergy efficiency exhibits is different than in most other steam system components. A change in ambient temperature of 10 °C causes a change in the exergy efficiency of the forced draft fan less than 0.5% in the entire range of observed steam loads.

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Section: Resultsmentioning

confidence: 99%

Energy and Exergy Analyses of Forced Draft Fan for Marine Steam Propulsion System during Load Change

Mrzljak

Blecich

Anđelić

et al. 2019

JMSE

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“…CFD simulations are also utilized to improve energy efficiency in mine ventilation fans. In [29], the examination of fan performance has been done through the analysis on flap-adjustment and leading-adjustment in aerodynamic performances. This included the angle of blades, total pressure, efficiency, system efficiency, adjustment efficiency, and energy-saving rate.…”

Section: Impeller Design Background and Research Tasksmentioning

confidence: 99%

Materials Selection and Design Options Analysis for a Centrifugal Fan Impeller in a Horizontal Conveyor Dryer

et al. 2021

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Comparative strength analysis of two popular options of the radial centrifugal fan impeller design used in horizontal conveyor dryer for fine-grained raw materials is presented. Three types of materials for impeller manufacturing—ASTM A36 steel, Hardox 450 steel and aluminium alloy 6061-T6 are considered. The finite element method (FEM) has been used to investigate stresses and deformations of the impeller within the operational speed range. Analysis shows that the better design is the impeller made of Hardox 450 steel with a central disk. Although the maximum stress is slightly higher in the blades slot for central disk fitting for this design option, it has greatly reduced stresses in contact edges with two other disks (by 22–38%) and blades bending deformation (by 51%). For this design, the maximum operational rotation speed is 1135 min−1 according to the yield strength with a 15% safety factor, while for basic design, it is 1225 min−1. The rational choice of material depends on maximum value of the yield stress to density ratio as well as taking into account the operating conditions and required fan performance. Recommendations for manufacturing the centrifugal fan impeller related to chosen material are given.

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“…Pada kasus konsumsi daya mesin, mesin centrifugal mendominasi di antara total fan dan blower dengan mengkonsumsi 90% energi sektor [4]. Primary air fan dioperasikan secara terus menerus, dalam pengoperasiannya tidak selamanya performa yang dihasilkan fan itu konstan, karena adanya beberapa faktor yang menyebabkan perubahan performa fan sehingga terjadi fluktuasi pada performa fan dan jauh dari peforma desain awal [5]. Untuk meningkatkan kinerja fan, banyak penelitian telah dilakukan.…”

Section: Pendahuluanunclassified

Studi Numerik Centrifugal Fan Tipe Impeller Backward dengan Variasi Putaran Fan

Diana

Setiyawan

Ulum

et al. 2021

JMEMME

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The primary air fan functions as a primary air producer which is used as air to transport coal powder from the pulverizer to the burner to be burned in the boiler furnace. This study aims to obtain the effect of the rotation variation of fan to fluid flow characteristics such as the distribution of total pressure, the dynamic pressure, the pressure static contours, velocity distribution, and the fan optimal efficiency. This study was numerical study with simulated a backward impeller type centrifugal fan in a two-dimension model using Fluid Computational software with the multiple reference frame method with the variation of fan rotation. Based on the visualization of the pressure contour and velocity distribution, it could be concluded that there was a volute phenomenon, this was indicated that the greater the volume area in the volute is the greater the total pressure value too. Based on the visualization of the outlet velocity distribution at the position of -0,8531m to -1,01301m, it was found that the velocity is close to the value of 0 m/s2. It showed that the minimum velocity in the area due to the volute tongue radius occurs a flow collision and it impacted the velocity in the area decreased up to V=0. From the simulation results, it was found that the greater the fan rotation value was the greater the efficiency value too. It would be verified by the actual operating data of the centrifugal fan with a minimum rotation range value of 1194 rpm to a maximum of 1468 rpm

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Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Cited by 9 publications

References 22 publications

Energy and Exergy Analyses of Forced Draft Fan for Marine Steam Propulsion System during Load Change

Energy and Exergy Analyses of Forced Draft Fan for Marine Steam Propulsion System during Load Change

Materials Selection and Design Options Analysis for a Centrifugal Fan Impeller in a Horizontal Conveyor Dryer

Studi Numerik Centrifugal Fan Tipe Impeller Backward dengan Variasi Putaran Fan

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