tube suction line heat exchanger selection procedure
Experimental and numerical investigation to evaluate the performance of triangular finned tube heat exchanger
... distances for smooth tube heat exchanger Figure 16 Velocity contours of air side for smooth tube heat exchanger Figure 17 Velocity contours of water side for smooth tube heat exchanger ISSN 2076-2895 ... finned tube heat exchanger Figure 19 Velocity contours of air side for triangular finned tube heat exchanger Figure 20 Velocity contours of water side for triangular finned tube heat exchanger ... of heat transfer for (smooth, triangular) finned tube heat exchanger is carried out AutoCAD is used to draw the geometries of this work with and without consist triangular finned tube heat exchanger...
Ngày tải lên: 20/11/2015, 14:05
Simulation of the thermal borehole resistance in groundwater filled borehole heat exchanger using CFD technique
... both U-pipe legs acting as heat sources The heat transfer becomes radial after a distance out in the bedrock (rradial) This un-radial heat flow in the water changes the heat transfer compared to ... using total heat transfer (THT) in Table The new achieved mean heat flux at the pipe wall is then used in simulations Mu19-24, which use constant heat flux at the pipe wall (cq"pw) The heat transport ... in a reduced heat transfer rate (q') for CHT The achieved mean heat transfer rate is approximately 70% of the values given in Table for total heat transfer (THT) The conductive heat transfer...
Ngày tải lên: 05/09/2013, 14:58
Natural convection unsteady magnetohydrodynamic mass transfer flow past an infinite vertical porous plate in presence of suction and heat sink
... effect of heat sink/source parameter S on the velocity of the flow field Curves with S0 correspond to the presence of heat sink and heat source respectively in the flow field The heat source ... in presence of constant suction and heat sink Approximate solutions are obtained for the velocity, temperature, concentration distribution, skin friction and the rate of heat transfer using multi ... plate with suction Recently, Das and his associates [16] investigated the hydromagnetic convective flow past a vertical porous plate through a porous medium in presence of suction and heat source...
Ngày tải lên: 05/09/2013, 15:28
Hydromagnetic convective flow past a vertical porous plate through a porous medium with suction and heat source
... with suction employing finite difference analysis Recently, Das et al [17] investigated numerically the unsteady free convective MHD flow past an accelerated vertical plate with suction and heat ... with constant suction and heat flux in presence of a transverse magnetic field Approximate solutions are obtained for velocity field, temperature field, skin friction and rate of heat transfer ... temperature at infinity, Cp is the specific heat at constant pressure, Pr is the Prandtl number, Gr is the Grashof number for heat transfer, S is the heat source parameter, Kp is the permeability...
Ngày tải lên: 05/09/2013, 16:10
compact heat exchangers selection design and operation
... steel/titanium heat exchanger Tube- fin heat exchangers Diffusion bonded heat exchangers The printed circuit heat exchanger (PCHE) Welded plate heat exchangers Plate and Frame Heat Exchangers (PHE) ... and Frame Heat Exchangers (PHE) Brazed Plate Heat Exchangers Welded Plate Heat Exchanger (PHE types) Other specialised PHE types The Plate and Shell Heat Exchanger (PSHE) Spiral Heat Exchangers ... simple case of the scaling of a heat exchanger tube of given length and diameter, shown in Figure 1.3, representative of a heat exchanger tube d Figure 1.3 Heat exchanger tube scaled by a factor N...
Ngày tải lên: 02/04/2014, 15:23
fundamentals of heat exchanger design
... Surface Heat Exchanger Pressure Drop 382 391 Plate-Fin Heat Exchangers Tube- Fin Heat Exchangers 392 393 6.4.1 6.4.2 6.5 6.6 Regenerator Pressure Drop Tubular Heat Exchanger Pressure Drop 393 393 Tube ... Temperatures 9.1.1 9.1.2 9.1.3 9.2 Heat Exchangers with C * % Counterflow and Crossflow Heat Exchangers Multipass Heat Exchangers 603 604 604 605 9.2.1 9.2.2 9.3 Plate-Fin Heat Exchangers 605 617 Rating ... Compatibility Fluid Type 10.2 General Selection Guidelines for Major Exchanger Types 10.2.1 10.2.2 10.2.3 10.2.4 Shell-and -Tube Exchangers Plate Heat Exchangers Extended-Surface Exchangers Regenerator Surfaces...
Ngày tải lên: 02/04/2014, 15:24
heat exchanger design handbook (1st issue), by e u schlunder
... Approximate Sizing of Shell-and -Tube Heat Exchangers, Kenneth J Bell 3.1.3 3.1.4 3.2 DOUBLE-PIPE HEAT EXCHANGERS 3.2.1 3.2.2 Introduction, A R Guy Applications of Double-Pipe Heat Exchangers, A R Guy Design ... Floating-Head Heat Exchanger, TEMA Type AJS, D Harris 4.4 MECHANICAL DESIGN: GENERAL FORMS OF HEAT EXCHANGERS 4.4.1 Mechanical Design of Air-Cooled Heat Exchangers, K V Shipes Mechanical Design of Plate Heat ... Shell-and -Tube Heat Exchangers, R C Cowie Costing of Air Coolers, C North Costing of Plate Heat Exchangers, PROPERTIES OF MIXTURES OF FLUIDS 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 COSTING OF SHELL-AND -TUBE HEAT...
Ngày tải lên: 02/04/2014, 15:25
Báo cáo hóa học: " Performance evaluation on an air-cooled heat exchanger for alumina nanofluid under laminar flow" pdf
... were used in single pipe heat transfer, microchannel heat sinks, plate heat exchangers, double -tube heat exchangers, or heated enclosures, and seldom used in air-cooled heat exchangers Since the ... tube in air-cooled heat exchanger of the liquid of heat exchanger The air-cooled heat exchanger was made of aluminum, and its structure was of finned -tube type assembled with 11 rectangular tubes ... overall heat transfer in multi-channel heat exchanger by alumina nanofluid J Alloy Compd 2010, 504S:385 Farajollahi B, Etemad SG, Hojjat M: Heat transfer of nanofluids in a shell and tube heat exchanger...
Ngày tải lên: 21/06/2014, 01:20
Báo cáo y học: "A ball valve blood clot in the airways – life-saving whole tube suction" pps
... References tube, which suction' was applied during gradual the tube 'Whole tuberesulted in extraction of the clot from withdrawal of the tube, which resulted in extraction of the clot from the tube ... with the distal end of the oropharyngeal tube in direct contact with the clot This 'whole tube suction' was applied during gradual withdrawal of the tube; in this way we were able to extract ... removed by 'whole tube suction' Several management options in cases of airway obstruction arising from blood clots have been described [5] If warranted, options include saline lavage and suctioning,...
Ngày tải lên: 12/08/2014, 20:20
đề tài heat exchanger
... Heat Exchanger Phân loại Phân loại theo nguyên lý làm việc Phân loại theo sơ đồ chuyển động chất lỏng, với loại TBTĐN có vách ngăn Phân loại theo thời gian Phân loại theo công dụng Heat Exchanger ... trình Heat Exchanger Phân loại TBTĐN theo thời gian Thường phân loại: Thiêt bị liên tục (ví dụ bình ngưng, calorife) Thiết bị làm việc theo chu kỳ (nồi nấu, thiết bị sấy theo mẻ) Heat Exchanger ... tiếp xúc chất lỏng mặt toả nhiệt Q trình TĐN khơng ổn định mặt trao đổi nhiệt có dao động nhiệt Heat Exchanger TBTĐN vách ngăn, loại TBTĐN có vách rắn ngăn cách chất lỏng nóng chất lỏng lạnh chất...
Ngày tải lên: 17/08/2014, 10:27
Variable selection procedures in linear regression models
... stepwise selection procedures to select variables Among all the subset selection procedures in the aim of selecting relevant variables, orthogonal matching pursuit (OMP), of which the selection ... criterion BIC, following either forward or backward stepwise selection procedures to select variables Among all the subset selection procedures in the aim of selecting relevant variables, Orthogonal ... when the number of linear predictors d is greater than the sample size n Best subset selection is one of the standard techniques for improving the performance of LSE Best subset selection, such...
Ngày tải lên: 10/09/2015, 09:27
A 1020 _ A 1020M _ 02 : Standard Specification for Steel Tubes, Carbon and Carbon Manganese, Fusion Welded, for Boiler, Superheater, Heat Exchanger and Condenser Applications
... when tubes are identified by heat number, all tubes within that heat 8.2 When requested on the purchase order, a product analysis shall be made by the manufacturer or supplier from one tube per ... only those tubes of the same size and the same heat which are heat treated in the same furnace charge When the final heat treatment is in a continuous furnace, a lot shall include all tubes of ... size and heat, heat treated in the same furnace, at the same temperature, time at heat, and furnace speed 9.2 For Grade A tubes, hardness test shall be made on specimens from each of two tubes from...
Ngày tải lên: 08/09/2016, 00:24
Tiêu chuẩn ASTM A 1012 – 02 Standard Specification for Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes With Integral Fins
... steel; heat exchanger tube; high temperature applications; seamless steel tube; stainless steel tube; steel tube; superheater tube; temperature service applications—high; welded steel tube SUMMARY ... part number, tube length and number of pieces 17 Keywords 17.1 alloy steel tube; austenitic stainless steel; carbon steel tube; condenser tube; duplex stainless steel; feedwater heater tubes; ferritic/austenitic ... governing plain tube specification FIG Outside and Inside Enhancement 4.1.3 Welded or seamless; 4.1.4 Alloy grade and UNS designation; 4.1.5 Dimensions; plain tube outside diameter, plain tube wall...
Ngày tải lên: 08/09/2016, 00:38
ASTM A 249 - 08 Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat Exchanger, and Condenser Tubes
... the heat number and the heat- treatment lot identification 19 Keywords 19.1 austenitic stainless steel; boiler tubes; condenser tube; heat exchanger tube; high temperature applications; steel tube; ... not more than 50 tubes not more than 75 tubes not more than 125 tubes include all tubes of the same size and heat, annealed in the same furnace at the same temperature, time at heat, and furnace ... only those tubes of the same size and from the same heat which are heat treated in the same furnace charge When the final heat treatment is in a continuous furnace, the number of tubes of the...
Ngày tải lên: 19/04/2017, 15:42
DSpace at VNU: Modelling and experimental validation for off-design performance of the helical heat exchanger with LMTD correction taken into account
... and T J Rennie, Comparison of heat transfer rates between a straight tube heat exchanger and a helically coiled heat exchanger, International Communications in Heat and Mass Transfer, 29 (2) ... helically coiled concentric tube- in -tube heat exchanger, International Journal of Heat and Mass Transfer, 49 (3-4) (2006) 658-670 [6] S Wongwises and M Polsongkram, Condensation heat transfer and pressure ... conditions and the reference conditions of the same heat exchanger as follows: Fig Helical coil heat exchanger teristics and design of helical heat exchangers But estimation of off-design conditions...
Ngày tải lên: 16/12/2017, 05:33
EXH400 shell and tube exchanger design and selection
... Shell and Tube Exchanger Design and Selection Fig 400-4 Heat Exchanger and Cooling Tower Manual Typical Cross Section, Shell and Tube Exchanger December 1989 400-8 Chevron Corporation Heat Exchanger ... 1989 400 Shell and Tube Exchanger Design and Selection Heat Exchanger and Cooling Tower Manual Figure 400-8 is a diagram of a multitube hairpin exchanger It is a shell and tube exchanger with one ... Shell and Tube Exchanger Design and Selection Multitube Hairpin Exchanger Information (2 of 2) December 1989 Fig 400-9 400-18 Heat Exchanger and Cooling Tower Manual Chevron Corporation Heat Exchanger...
Ngày tải lên: 30/10/2017, 23:58