通风机

This is the main research contents in this paper Enhance the operating efficiency of turbomachine、saving energy become a common understanding. In order to improve the efficiency、output power、comprehensive utilization level of high energy and enhance the operation reliability, numerical simulation of flow field inside turbomachine for several difference uses were studied with our professional dominance based on three practical engineering project. Based on these the axial and centrifugal blowers were designed.

而提高叶轮机械的能量转换效率、节能降耗已成透平机械行业的业内共识，本论文研究利用专业优势，围绕提高几种叶轮机械效率、输出功率、高能量综合利用水平、提高机组运行的可靠性等目标，以三个实际工程研发项目为基础，研究分析了多种特殊用途的叶轮机械内部流动情况，在此基础上，设计研究了轴流与离心两型动车组冷却通风机，并提出烟气轮机与船用涡轮增压器压气机蜗壳的优化方案等。

In the simulation of gas flow, the finite volume method is selected. The three-dimensional time averaged N-S equation, the RNG k -ε turbulent model and the mixed mesh are used. Then the Lagrange particle track model and the uniphase coupling method are used to simulate the gas-solid two phase flow field in the centrifugal fan.

在气相流场的数值模拟中采用了有限体积法和混合类型的网格，以三维时均N-S方程和RNGk-ε两方程湍流模型为基础，利用SIMPLE算法，对离心式通风机进行了内部流场的数值模拟。

After main parameters of impeller and casing are optimized using the numerical predictions of aerodynamic performance, the size of the vaneless diffuser and the relative place between the impeller and casing are optimized to decrease the friction loss.

利用气动性能数值预估对叶轮和蜗壳的主要参数进行优化后，再对无叶扩压器的大小和叶轮与蜗壳的相对位置进行优化，减少摩擦损失，最终得到的后向通风机测试结果，全压和效率均提高了11％。

With globally industrial development there are often corrosive and harmful gas volatilizing in the course of production, detection,and experiment, which does harm to human health.

随着全球工业的发展，在生产、检测和实验过程中，经常有腐蚀性和有害气体挥发，危害着人们的身体健康，为了保证良好的工作条件和环境，必须有良好的通风设备，本公司生产的4-72型、4-62型玻璃钢通风机得到了广泛的应用，它具有耐腐蚀性能好，防雨、防晒和良好的理化性能，强度高、体积轻，排污效率可达95％以上，噪声LSA在25分贝以下，节能、运转平稳等特点。

Propeller fans exhaust air through holes in the wall.

螺旋式通风机从壁孔中排出空气。

Based on the parallel operation experiments of axial-flow fans, moving law of a pair of operation points have been studied.

以轴流风机并联工作实验为基础，研究了通风机并联运行&工况点对&的迁移规律。

Numerical simulation of the discrete noise in an axial-flow fan was performed by utilizing the method of CFD in conjunction with CAA.

采用计算流体动力学和计算声学相结合的方法，对轴流式通风机的离散噪声进行了数值模拟。

The motor made by Deton is exclusively used in Deton blowers and this guarantees the high-quality of our products.

德通生产的电机在德通风机中专用，是高质量的可靠保证。

Is specializing in the production of air-conditioning fan and blower manufacturers use mine.

山东美陵美力达风机有限公司是专业生产空调用通风机和矿山用风机的厂家。

The Company since 1975 Joint Huazhong University of Science and Technology, the development of all types of fans, is now producing 58 series over 600 varieties and specifications of the blower fan.

本公司自1975年以来联合华中科技大学，不断研制各类风机，现生产58个系列600多个品种规格的鼓风机和通风机。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了