balancing a shell and tube heat exchanger
Thiết bị trao đổi nhiệt ống chùm (Shell and tube heat exchangers)
Ngày tải lên :
15/01/2014, 17:25
... trao đổi nhiệt, Đại học Bách Khoa Đà Nẵng Các website tham khảo: http://en.wikipedia.org/ http://www.gc3.com/ http://www.heatexchangersonline.com/ Phần mềm tham khảo: Shell and Tube Heat Exchanger ... Floating head with backing device T - Pull through floating head U - Đuôi ống chữ U W – Externally sealed floating tube sheet Sơ đồ thuật toán Tài liệu tham khảo • • • • • • • Carl R Branan - ... dàng tháo lắp bảo dưỡng Fixed Tube- Sheet Exchangers U Tube Exchangers Floating head exchangers: Bảng so sánh loại thiết bị trao đổi nhiệt ống chùm Tiêu chuẩn TEMA cho thiết bị ống chùm: Các loại...
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THIẾT KẾ HỆ THỐNG SẤY DẦU FO DÙNG CHO LÒ HƠI BẰNG THIẾT BỊ TRAO ĐỔI NHIỆT ỐNG LỒNG ỐNG SỬ DỤNG NĂNG LƯỢNG MẶT TRỜI DESIGNING A SYSTEM FOR DRYING BOILER FUEL OIL WITH A DOUBLE TUBE HEAT EXCHANGER DEVICE USING SOLAR ENGERGY pptx
Ngày tải lên :
29/06/2014, 16:20
... gia nhiệt cho dầu chảy bên ngòai ống khơng gian hình xuyến, sau nước lạnh bơm tuần hòan thơng qua Collector thu nhiệt mặt trời vào tank ch a nhỏ Dầu thơ tuần hòan khơng gian hình xuyến qua quay ... 23, mở van 12, 14 , 15, 16, 17, 19, 20, hai bơm 5A họat động, lúc nước nóng tank lớn gia nhiệt cho tank nhỏ qua dàn ống xoắn để từ nước nóng bên đường ống thiết bị ống lồng ống để gia nhiệt cho ... gia nhiệt thêm cho dầu có họat động hay khơng phụ thuộc vào nhiệt độ dầu vỏ ngòai khơng gian hình xuyến trao đổi nhiệt ống lồng ống, tùy thuộc vào điều kiện thời tiết Điện trở sấy dầu (10) họat...
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Experimental and numerical investigation to evaluate the performance of triangular finned tube heat exchanger
Ngày tải lên :
20/11/2015, 14:05
... smooth tube heat exchanger at different axial distances It can be noted that the maximum air and water temperatures appears at Z/d = while the minimum temperatures appears at Z/d = It can be seen also ... specified water Reynold's numbers at various axial distances ratio Results showed a significant heat transfer augmentation in heat exchanger for air and water sides The effect of adopting fins on heat ... heat exchanger It is noted that heat transfer behavior increases within present model as air mass flow rates and water Reynold's numbers increases Heat transfer enhancement by adding triangular...
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Modeling Of Wire On Tube Heat Exchangers Using Finite Element Method
Ngày tải lên :
19/03/2016, 13:14
... sensible heat is exchanged, a shell and tube heat exchanger is analysed by FEM using Galerkin’s approach The discretised model of a shell and tube heat exchanger (1 shell pass-2 tube passes) is ... Narayana, Performance evaluation of cross ow compact heat exchangers using ÿnite elements, Int J Heat and Mass Transfer 32 (1989) 889–894 [11] S.G Ravikumar, K.N Seetharamu, P .A Aswatha Narayana, ... wire-on -tube heat exchangers and also predict deratings under abnormal ambient conditions References [1] G Tanda, L Tagliaÿco, Free convection heat transfer from wire -and tube heat exchangers, Trans...
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1 optimal design of plate and frame heat exchangers for efficient heat recovery in process industries
Ngày tải lên :
26/08/2016, 18:04
... plates and inter-plate channels are given at Table These parameters are estimated from information available at CAS200 and also by measurements on the samples of real plates The results for heat ... transfer and hydraulic resistance from available literature data Similar estimations were also made by Mehrabian [12], who proposed a manual method for the thermal design of plate heat exchangers ... Rating calculation for plate heat exchanger effectiveness and pressure drop using existing performance data Transactions of IChemE 2002;80(Part A, April):309e12 [14] Kanaris AG, Mouza AA, Paras...
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advances in thermal design of heat exchangers a numerical approach direct-sizing, step-wise rating, and transients
Ngày tải lên :
02/04/2014, 15:14
... geometry and availability of appropriate heat- transfer and flowfriction correlations, thermal design can be approached in the same way as for plate-fin exchangers Lamella heat exchangers Flat tube ... applied to such different designs as: compact plate-fin exchangers helical -tube, multi-start coil exchangers platen-type heat exchangers RODbaffle shell- and- tube exchangers lamella heat exchangers ... both heat- transfer and flow-friction data against Reynolds number, and for all temperature-dependent physical parameters At least 50 stations along the length of a contraflow exchanger are desirable...
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handbook for heat exchangers and tube banks design
Ngày tải lên :
02/04/2014, 15:24
... Handbook for Heat Exchangers and Tube Banks Design Donatello Annaratone Handbook for Heat Exchangers and Tube Banks Design 123 Prof Donatello Annaratone Via Ceradini 14 20129 Milano Italy donatello@annaratone.eu ... external fluid are shown in Tables A. 6 and A. 7 Finally, the values of χ c for types A and B or for types C and D with five passages of the external fluid are shown in Tables A. 8 and A. 9 A single passage ... t1 and t2 are the inlet and outlet temperatures of the heated fluid in ◦ C, cpm and cpm are the mean isobaric specific heat of both the heating and the heated fluid in J/kgK, and ηe is the actual...
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A 1020 _ A 1020M _ 02 : Standard Specification for Steel Tubes, Carbon and Carbon Manganese, Fusion Welded, for Boiler, Superheater, Heat Exchanger and Condenser Applications
Ngày tải lên :
08/09/2016, 00:24
... include all tubes of the same 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 ... lot shall include 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 ... exchanger, tubes shall be capable of withstanding expanding and beading without showing cracks or flaws, or opening at the weld When properly manipulated, superheater tubes shall withstand all forging,...
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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
Ngày tải lên :
08/09/2016, 00:38
... four artificial defects in the reference standard on a repeatable basis Equipment adjustments and tube speed maintained during calibration shall be the same for production tubes 12.1.1.3 Set aside ... supplementary requirements, or other requirements desig- 16 Packaging and Package Marking 16.1 The tube shall be packaged in accordance with the manufacturer’s standard practice, unless otherwise agreed ... this standard or for additional standards and should be addressed to ASTM International Headquarters Your comments will receive careful consideration at a meeting of the responsible technical committee,...
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Báo cáo khoa học: The propeptide in the precursor form of carboxypeptidase Y ensures cooperative unfolding and the carbohydrate moiety exerts a protective effect against heat and pressure pot
Ngày tải lên :
07/03/2014, 21:20
... Hata, T., Hayashi, R & Doi, E (1967) Purification of yeast proteinases Part III Isolation and physicochemical properties of yeast proteinase A and C Agric Biol Chem 31, 357–367 Aibara, S., Hayashi, ... or was obtained from Oriental Yeast Co (Lot 21003805) (Osaka, Japan) and proCPY was prepared as the same manner as CPY, with minor modifications Dgly CPY and Dgly proCPY, in which the asparagine ... the van’t Hoff enthalpy (DHv) was 1.05 (DHcal and DHv values were 585 and 557 kJÆmol)1, respectively) In contrast, a DSC analysis of the mature form (CPY) revealed an apparently symmetrical single...
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compact heat exchangers selection design and operation
Ngày tải lên :
02/04/2014, 15:23
... International Communications in Heat and Mass Transfer International Journal of Heat and Fluid Flow International Journal of Heat and Mass Transfer International Journal of Multiphase Flow International ... brazed stainless 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 ... Frame Heat Exchangers (PHE) and derivatives Plate and Frame Heat Exchangers (PHE) Brazed Plate Heat Exchangers Welded Plate Heat Exchanger (PHE types) Other specialised PHE types The Plate and Shell...
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mass and heat transfer analysis of mass contactors and heat exchangers (cambridge series in chemical engineering)
Ngày tải lên :
02/04/2014, 15:52
... material and method of approach is followed by chapters on chemical reactor analysis (Chapter 2), heat exchanger analysis (Chapter 3), and mass contactor analysis (Chapter 4) These chapters have ... presentation of heat and mass transfer, maintaining mathematical rigor while keeping mathematical analysis to a minimum This allows students to develop a strong conceptual understanding and teaches ... coefficient (Km ), and the interfacial area (a) , you will be able to solve problems in mass and heat transfer and develop operating and design criteria Part II features additional chapters that focus on...
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Báo cáo y học: "A novel and safe technique in closed tube thoracostomy" pdf
Ngày tải lên :
10/08/2014, 10:20
... pleural adhesions Also pulmonary, cardiac, esophageal and main vascular injuries may occur by trochar that has a sharp point en route pleural space In the other hand failing the trochar assistance; ... was advanced towards the pleural space and directed to the apex After the combination was advanced about 15 cm, the trocar was withdrawn about 10 cm, and thus, the free end of the drain was advanced ... pleural space with the help of a macro clamp and connected to an underwater drainage system Finally, a U-suture is made for use in drain fixation and removal Statistical Method Chi-square test was...
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A numerical study of heat and mass transfer in porous fluid coupled domains
Ngày tải lên :
12/09/2015, 21:13
... (Neale and Nader, 1974; Vafai and Thiyagaraja, 1987; OchoaTapia and Whitaker, 1997; Jang and Chen, 1992; Kim and Choi, 1996; Kuznetsov, 1999) However, other types of interfacial conditions are also ... convection, there have been several studies on the use of porous materials (Vafai, 2001; Kiwan, S and AI-Nimr, 2001; Bhattacharya and Mahajan, 2002) in order to obtain heat transfer enhancement for ... by many researchers recently (Goyeau et al., 2003; Chandesris and Jamet, 2006; Valdes-Parada et al., 2007; Chandesris and Jamet, 2007) and derivations have been proposed to evaluate the first...
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Performance Studies on a Downdraft Biomass Gasifier with Blends of Coconut Shell and Rubber Seed Shell as Feedstock
Ngày tải lên :
29/07/2016, 14:01
... this gasifier as per supplier specification is wood chip A gas analyser, gas chromatograph and a gas flow meter are provided to measure the quality and quantity of the producer gas Calibrated ... Biofuels Annual 2012; India, MNRE Biomass Resource Atlas of India; 2009 Biomass data by state 2002-04 [9] N Tippayawong, C Chaichan, A Promwungkwa, P Rerkkriangkrai, Clean Energy from Gasification ... utilization of various biomasses available in a region [19] Therefore blends of biomasses in a gasifier can improve the continuous and steady operation of gasifiers in remote areas A analytical model...
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Cambridge.University.Press.The.American.Puritan.Elegy.A.Literary.and.Cultural.Study.Jun.2000.pdf
Ngày tải lên :
21/09/2012, 11:00
... took a more direct approach to verbal mourning, one that drew on Elizabethan patriotism and patronage and, later, Jacobean melancholy and popular devotional traditions This type of poem, usually ... “Lycidas” and New England’s elegies As Draper points out, that factor was social: the rise of a largely Puritan merchant class to wealth, power, and artistic patronage (Funeral Elegy ) In contrast ... cultural and historical implications of what I was trying to do; Sheila Sullivan helped me clarify my methods and theoretical positions; and Michael S Glaser gave a poet’s critique, at once sharp and...
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A pragmatics and conversation analysis perspective
Ngày tải lên :
07/11/2012, 14:26
... pragmatics and conversation analysis This is the first study of a speech act conducted on the basis of pragmatics and CA in English and Vietnamese The combination of pragmatics and CA takes advantage ... analyzed as part and parcel As Cameron (2002: 53) puts it: Any given instance of language use is analysed as part of a whole social situation; more generally, ways of using and understanding language ... essential and valuable in the teaching and learning of English by Vietnamese learners and Vietnamese by native speakers of English 1.1.2 Society, culture and language Social acts or ‘speech acts’ (Austin,...
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