Centrifugal pump document
The Centrifugal Pump (Bơm ly tâm) docx
... 1.3 Pump types and systems 24 1.3.1 The UP pump 25 1.3.2 The TP pump .25 1.3.3 The NB pump 25 1.3.4 The MQ pump 25 1.3.5 The SP pump 26 1.3.6 The CR pump ... the book: The Centrifugal Pump We have written the book because we want to share our knowledge of pump hydraulics, pump design and the basic pump terms which we use in our daily work The Centri...
Ngày tải lên: 20/03/2014, 14:20
Unsteady flow in centrifugal pump at design and off design conditions
... of flow rates The unsteady numerical simulation at three different flow rates of 0.7Qdesign, Qdesign and 1.3Qdesign show that the inlet flow structure of straight intake section is flow rate ... exit into volute casing, the highly distorted radial flow, either at design or off -design condition causing unsteadiness flow in the volute casing The flow inside the volu...
Ngày tải lên: 10/09/2015, 08:27
Investigation of flow through centrifugal pump impellers 6
... and M6 at pump design point The existence of back flow in the passages will increase the loss of the flow and thus reduce the efficiency of the centrifugal pump Some modification of the pump ... pressure side of blade surface The change of flow patterns at low flow rate is not obvious for model impellers M3 and M6, but it can still be seen that the recirculation...
Ngày tải lên: 16/09/2015, 17:14
Investigation of flow through centrifugal pump impellers 5
... M5 Rotational speed (rpm) 2900 1 450 2900 1 450 2900 1 450 Design flow (m /h) 27 14 270 180 70 45 Design efficiency (%) 55 48 76 81 74 .5 65 Calculated efficiency (%) 58 .68 52 .5 79. 25 84.86 76 .5 ... size centrifugal pumps 82 Chapter Results and Discussions Table 5. 1 Specifications of model impellers Impeller Model M1 M2 M3 M4 M5 M6 Design speed 54 0 600 2900 1 450 2900...
Ngày tải lên: 16/09/2015, 17:14
Investigation of flow through centrifugal pump impellers 4
... standard of our pump test stand This international standard is the first of a set dealing with acceptance tests of centrifugal, mixed flow and axial pumps; they correspond to three classes of tests ... each flow rate The performance test characteristics of design point are also recorded For example, to test the fourth model pump M4 at rotational speeds of 2900 rpm and 145...
Ngày tải lên: 16/09/2015, 17:14
Investigation of flow through centrifugal pump impellers 3
... Ideal Gas Law: ρg = wp R0 T (3. 5) where w is the molecular weight of gas, and R0 is the Universal Gas constant Eqs (3. 1), (3. 2), (3. 3), (3. 4) and (3. 5) form a closed set of non-linear partial differential ... value σ =1 37 Chapter Theoretical Models of Two-Phase Flow 3. 4 Boundary Conditions The implementation of boundary conditions for multiphase flow is very similar to t...
Ngày tải lên: 16/09/2015, 17:14
Investigation of flow through centrifugal pump impellers 2
... σ * =1 /2, σ =1 /2 22 Chapter Theoretical Models of Single-Phase Flow 2. 2.4 Shear Stress Transport (SST) Model While standard two-equation models provide good predictions for many flows of engineering ... (2. 9) and (2. 10) is the turbulent kinetic energy production term, which for incompressible flow is: Pk = µ t ∇U • (∇U + ∇U T ) (2. 11) Eqs (2. 1), (2. 2), (2. 9) and (2. 10) fo...
Ngày tải lên: 16/09/2015, 17:14
Investigation of flow through centrifugal pump impellers 1
... the flows in centrifugal pump are three-dimensional turbulent flows, and a clear understanding of turbulent flow structures is essential for the optimization of the performance of centrifugal pumps ... volumetric flow and the total breakdown of the flow may occur when the gas fraction reaches about 8 -10 % of the total volumetric flow rate For two-phase flow applicat...
Ngày tải lên: 16/09/2015, 17:14
AWS FilePicker 2.1 Documentation
... contact us: support@awsystems.biz AWS FilePicker 2.1 Documentation 14 < /AWS: FilePicker> 5.4 Configuring AWS FilePicker AWS FilePicker has a number of ... to contact us: support@awsystems.biz AWS FilePicker 2.1 Documentation Have questions or comments? Feel free to contact us: support@awsystems.biz 32 AWS FilePicker 2.1 Documentation 33 Thanks ... details.]...
Ngày tải lên: 14/08/2012, 10:26
Multiple Document Interfaces
... dụng Windows rơi vào loại sau: 2/28/10 Single Document Interfaces (SDI) Explorer Interfaces Multiple Document Interfaces (MDI) Single Document Interface • • Mỗi tài liệu thể cửa sổ đơn Trong ... xuất bên cửa sổ ứng dụng 2/28/10 loại MDI • • Document application Workspace application 2/28/10 MDI SDI Single Document Interface 2/28/10 MDI Multiple Document Interface P...
Ngày tải lên: 12/09/2012, 15:05
Vane ane Pump Series SDV
... Hannifin China Hydraulic Vane Pump Shanghai, China Catalogue HY0738-A/CH Ordering code Vane Pump Series SDV1 0 Model No SDV 10 - P S - C L - P Vane pump Series Identity Series 10 Shaft rotation ... Hannifin China Hydraulic Vane Pump Shanghai, China Catalogue HY0738-A/CH Ordering code Model No Vane Pump Series SDV2 010 SDV 2010 - F 13 S S - CC - L - P Vane...
Ngày tải lên: 12/10/2012, 15:01
Bơm ECD-V - P - Composition and Construction of ECD-V3 Pump System
... 2 Operation of ECD-V3 Pump 2-1 Fuel Suction and Injection The mechanism for the suction and pumping/distribution of the fuel is basically the same as for the previous distributor type pump However, ... between the pressure chamber and pump chamber The pressurized fuel spills into the pump chamber, thus decreasing the pressure in the pressure chamber and ending the pump...
Ngày tải lên: 23/10/2012, 09:09
Consultative document Revisions to the Basel II market risk framework
... this consultative document refer to paragraphs in the comprehensive version of the Basel II Framework The Committee released consultative documents on the revisions to the Basel II market risk framework ... version of the Basel II Framework which includes the June 2004 Basel II Framework, the elements of the 1988 Accord that were not re...
Ngày tải lên: 24/10/2012, 09:40
Báo cáo y học: " A retrospective quality assessment of pre-hospital emergency medical documentation in motor vehicle accidents in south-eastern Norway"
... acquisition of data and data analysis, and the drafting, revising, and final approval of the manuscript SS was involved in the study conception and design, data analysis, and in the revising and final approval ... this article as: Staff and Søvik: A retrospective quality assessment of pre-hospital emergency medical documentation in motor vehicle accidents in...
Ngày tải lên: 25/10/2012, 09:56