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Thursday, December 3, 2020 | History

2 edition of Low heat transfer oxidizer heat exchanger design and analysis report found in the catalog.

Low heat transfer oxidizer heat exchanger design and analysis report

Low heat transfer oxidizer heat exchanger design and analysis report

final

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Published by National Aeronautics and Space Administration, Lewis Research Center, National Technical Information Service, distributor in Cleveland, OH, [Springfield, Va .
Written in English


Edition Notes

Statementprepared by Pratt & Whitney, Government Products Division
SeriesNASA contractor report -- NASA CR-179488
ContributionsPratt & Whitney Aircraft Group. Government Products Division, Lewis Research Center
The Physical Object
FormatMicroform
Pagination1 v
ID Numbers
Open LibraryOL14985306M

  Secondary heat recovery systems capture excess energy in the exhaust stream of processes or oxidizers. On the surface, heat recovery makes good sense: Capture the waste energy and repurpose it rather than throwing it out an exhaust stack. The concept sounds relatively straightforward. As with most things, however, the proof lies in the details. @article{osti_, title = {Compact heat exchangers}, author = {}, abstractNote = {This report aims to increase the market penetration of compact heat exchangers (CHEs) in industry by detailing current experience of their use. CHEs are characterized by having a comparatively large amount of surface area in a given volume, compared to traditional heat exchangers, in particular the shell-and. Augmentation techniques can be classified either as passive methods, which require no direct application of external power (), or as active methods, which require external effectiveness of both types of techniques is strongly dependent on the mode of heat transfer, which may range from single-phase free convection to dispersed-flow film boiling.


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Low heat transfer oxidizer heat exchanger design and analysis report Download PDF EPUB FB2

Get this from a library. Low heat transfer oxidizer heat exchanger design and analysis report: final. [Pratt & Whitney Aircraft Group.

Government Products Division.; Lewis Research Center.;]. and analysis for such a heat exchanger. The design presented herein uses a high efficiency compact core to vaporize the oxygen and, in the self-contained unit, attenuates any pressure and flow oscillations which result from unstable boiling in the core.

This approach is referred to as the high heat transfer design. Using gaseous hydrogen from the thrust chamber jacket as an energy source, a heat exchanger can be used to vaporize liquid oxygen without creating flow instability. This report summarizes the design and analysis of a United Aircraft Products (UAP) low-rate heat transfer heat exchanger concept for the RLIIB rocket engine.

COMPUTER AIDED DESIGN AND ANALYSIS OF A HEAT EXCHANGER A VIJAY, ATHA Abstract: Heat transfer is the science that deals with the rate of exchange of heat between hot and cold bodies called the source and receiver. When Low heat transfer oxidizer heat exchanger design and analysis report book Kg of water is vaporized or condensed, the energy change in either process is Size: KB.

Optimal heat exchanger (HEX) design and accurate estimation of its performance is of paramount importance to improve the energy eÿciency and the economic feasibility of heat pump systems.

A plate heat exchanger (PHE) is a multi-channel HEX configuration, which attracted intense industrial attention due to enhanced heat transfer in a relatively Author: Roberta Mancini. The ultimate aim of this report is to design an Air Cooled Heat Exchanger, preferably of shell and tube type, that can be used to transfer the heat energy generated in the windings of 3-phase Induction motor working at rpm (Assumed).

Following figure details the boundary conditions for the heat exchanger. A Heat Exchanger: heat energy is transferred from one body or fluid stream to another. heat transfer equations are applied to calculate this transfer of energy so as to carry it out efficiently and under controlled Size: 1MB.

fr: Heat exchanger frontal area. A g: Gas side total surface area. A: Surface area of the heat exchanger surfaces. C p: Specific heat capacity of air at constant pressure. F: Correction factor for the heat exchanger. H 1: Height of the exchanger core. h i: Convective heat transfer coefficient of the hotter side.

h o: Radioactive heat transfer File Size: 1MB. the heat exchanger, the cooler fluid will approach the inlet temperature of the hot fluid. Counter flow heat exchangers are the most efficient of the three types. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest cold-fluid temperature greater than the coldest hot-fluid Size: KB.

The Overall Design Process: Design of a heat exchanger is an iterative (trial & error) process. Here is a set of steps for the process: Calculate the required heat transfer rate, Q, in Btu/hr from specified information about fluid flow rates and temperatures.

Make an initial estimate of the overall heat transfer coefficient, U, based on File Size: KB. FR FOREWORD. This report summarizes the design and analysis of the United Aircraft Products (UAP) low heat transfer oxidizer heat exchanger concept for the RLIIB rocket engine and is submitted in compliance with the requirements of NASA Lewis Research Center Contract NAS The preliminary design effort was begun approximately 15 January by United Aircraft Products in response to an RFQ for a heat exchanger defined.

Using gaseous hydrogen from the thrust chamber jacket as an energy source, a heat exchanger can be used to vaporize liquid oxygen without creating flow instability. This report summarizes the design and analysis of a United Aircraft Products (UAP) low-rate heat transfer heat exchanger concept for the RLIIB rocket : T.

Kmiec, R. Peckham and P. Kanic. • For the first trial calculation, this A is the heat transfer area provided or actual heat transfer area of available or selected heat exchanger.

A = Apro = Ntπ doL m^2 • where, do = Outside diameter of tube, m L = Tube length, m Nt = Total number of tubes • Values of do and L are decided by designer and from Eq, value of Nt is determined. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids.

Heat exchangers have widespread industrial and domestic applications. * Heat exchanger surface geometrical properties * Thermodynamic analysis and modeling * Flow maldistribution and header design * Fouling and corrosion Complete with solved examples and problems clarifying important concepts and applications, Fundamentals of Heat Exchanger Design is a powerful tool for students, researchers, and by: 5.

Fundamentals of Heat Exchanger Design fluid side fluid streams fouling resistance friction factor fully developed header heat capacity rate heat conduction heat exchanger heat exchanger design heat transfer coefficient heat transfer rate heat transfer surface Hence hydraulic diameter increase inlet book chapters, and conference papers /5(3).

The Heat Exchanger Design Handbook is a valuable addition to the thermal engineering literature. It is an excellent source book for heat exchanger design and is unique in that it gives a comprehensive coverage of such topics as mechanical design of- corrosion in- and materials for heat exchangers that are generally not touched upon in-depth in books of this genre.5/5(2).

Once the refrigerant-side geometry is properly designed according to the water-side performance, the overall heat transfer capacity of the novel heat exchanger is predicted to be higher than that of PHX by 53–%.

This can decrease the cost of the heat exchanger and Cited by: Practical Thermal Design of Shell-and-Tube Heat Exchangers is a truly practical book with no less than 35 detailed case studies that serve to illustrate concepts, relate different topics and introduce applications.

Thermal designers of shell-and-tube heat exchangers (STHE) will find the book indispensable for understanding the mechanics of thermal-hydraulics in STHE's and thereby for. From inside the book.

28 other sections not shown. Other editions - View all. Heat exchanger design handbook, Volume 4 cross-flow dryer effect enthalpy equation estimated Figure film fin tubes flow rate fluid fouling resistance fraction furnace geometry heat exchanger heat flux heat transfer coefficient heat transfer surface Hemisphere.

Vibration Analysis of Shell and Tube Heat Exchanger for Low Temperature Thermal Desalination Plant Conference Paper (PDF Available) February with 1, Reads How we measure 'reads'. Figure Different types of heat exchangers In addition, the overall heat transfer equation for the exchanger must be solved simultaneously: (13) with being the overall heat transfer coefficient, the heat transfer area, and is the log-mean temperature difference.

Equation File Size: 1MB. performance prediction is part of the heat exchanger design process. The two-row fin-and-tube heat exchanger studied has a staggered tube arrangement. Analyzing flow and heat transfer using CFD can make calculations to predict heat-exchanger performance [8].

However, it is not possible to perform CFD simulation on the entire heat. Heat tranSfer FluiD TiPS heaT TransFer fluids (hot oils, thermal liquids) are manufactured from highly refined petroleum, synthetically formulated hydrocar-bons or siloxanes (silicone).

Able to provide high temperatures at very low system pressures, heat transfer fluids offer safety, low maintenance and extended operating lifetimes as major File Size: KB. 2 Fundamentals of Heat Transfer 1 Design of Finned Tubes 1 Fin Efficiency 3 Plain Geometry 4 Finned Tubes 7 Special Consideration in the Calculation of Heat Transfer 10 3 Equations for the External Heat Transfer Coefficient 12 Staggered Tube Arrangements 12 Overview of Equations 12File Size: 3MB.

The micro heat exchanger can be seen in Figures 7 and 8 below. Figure 7: Micro-channel Heat Exchanger Figure 8: Micro-channel Heat Exchanger When compared to several automobile radiators, the micro heat exchanger outperformed them in a couple of areas. One area was on a heat transfer rate to volume basis in which the micro heat.

Heat Exchanger Design Guide: A Practical Guide for Planning, Selecting and Designing of Shell and Tube Exchangers takes users on a step-by-step guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer.

Heat Area Factor set to Using MD and Variable List set C to Run the simulator with this setting for 15 minutes. Freeze and print the two trends. Heat Area Factor set to 1: As in step 1, set C to 1. This is the default setting for the Heat Area Factor (heat transfer coefficient x area).

If the tube side fluid is a liquid and the outside (usually called the shell side) fluid is a low or medium pressure gas, the liquid side heat transfer coefficient (typically about W/m 2 K) is very much greater than that of the gas (about 60W/m 2 K).

To balance the design to obtain an economic heat exchanger thus requires the shell side to. Project Design an Air Cooled Heat Exchanger, preferably of shell and tube type, that can be used to transfer the heat energy generated in the windings of 3-phase Induction motor.

Scope is to develop the prototype by the R&D division. Figure 6. This project objective is to develop a high-temperature design upgrade for an existing primary surface heat exchanger so that the redesigned hardware is capable of operation in CO 2 at temperatures up to 1,°F (°C) and pressure differentials up to psi (9 bar).

The heat exchanger is proposed for use as a recuperator in an advanced low-pressure oxy-fuel Brayton cycle that is predicted. A basic schematic for a single pass shell-and-tube heat exchanger is shown in Figure 1.

The stream to be cooled enters the tube side and is distributed amongst the tubes shown with red arrows. The stream that cools the liquid is shown in blue enters on the shell-side and flows perpendicular to the tube bundle for maximum heat transfer.

Probably the most common energy recovery product applied to oxidizer stacks is an air-to-air heat exchanger. Be it a shell-and-tube or plate type heat exchanger, there is a cold side air stream (typically fresh air) and a hot side air stream (typically the oxidizer exhaust) that are used for heat transfer.

THE HEAT TRANSFER PROCESS There are a lot of variables that impact the heat transfer process that can’t be put aside, if one should get an accurate description of the process. The roughness of the surface, real dimensions, porosity etc. are variables that are difficult to measure and which have a great impact on the heat exchanger performance.

Reason for Heat Exchangers A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another (hot and cold fluid). Common Example The classic example of a heat exchanger is found in an The counter flow design is most efficient,File Size: KB.

Get this from a library. High heat transfer oxidizer heat exchanger design and analysis: final report, Jan. - Oct. [T D Kmiec; P G Kanic; R J Peckham; Lewis Research Center.]. In this video we learn how a plate heat exchanger works, covering the basics and working principles of operation.

We look at 3d models, animations. Most shell-and-tube heat exchangers have multiple “passes” to enhance the heat transfer. Here is an example of a (1 shell pass and 2 tube passes) heat exchanger. As you can see, in a 12 heat exchanger, the tube- -side fluid flows the entire length of the File Size: 74KB.

Heat Transfer and Fluid Flow Service (HTFS) and Heat Transfer Research Inc. (HTRI) and by computer service companies such as B-JAC Inter-national. These programs offer design and cost analysis for all primary heat exchanger types and incorporate multiple design codes and standards from the American Society of Mechanical Engi-File Size: 1MB.

A heat exchanger is a system used to transfer heat between two or more exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.

They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural. * Heat exchanger surface geometrical properties * Thermodynamic analysis and modeling * Flow maldistribution and header design * Fouling and corrosion Complete with solved examples and problems clarifying important concepts and applications, Fundamentals of Heat Exchanger Design is a powerful tool for students, researchers, and engineers/5(7).Unit Operations Lab Heat Exchanger Ý L M M k _ v, (14) where q is the actual rate of heat transfer from the hot to cold fluid and qmax is the maximum possible rate of heat transfer for given inlet temperatures of the fluids, M k _ v L % k g l: 6, Ü F 6, Ü ; (15) Here, Cmin is the smaller of the two heat capacity rates Cc and heat exchanger effectivenessFile Size: KB.Damaging thermal-mechanical stresses inherent in every thermal oxidizer are eliminated with the QUADRANT IR-Thermal Oxidizer and its round design.

High Grade Insulation All QUADRANT IR-Thermal Oxidizers incorporate a specialized insulation system designed to retain heat for low cost and cool shell temperatures.