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Friday, May 15, 2020 | History

3 edition of Development of a contact heat exchanger for a constructable radiator system found in the catalog.

Development of a contact heat exchanger for a constructable radiator system

Development of a contact heat exchanger for a constructable radiator system

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  • 5 Currently reading

Published by Vought Corporation in Dallas, Texas .
Written in English

    Subjects:
  • Coolants.,
  • Heat exchangers.,
  • Heat pipes.,
  • Heat transfer.,
  • Spacecraft radiators.

  • Edition Notes

    Statementprepared by H. R. Howell.
    Series[NASA contractor report] -- NASA-CR-171730., NASA contractor report -- NASA CR-171730.
    ContributionsVought Corporation., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL16117732M

    What is a Heat Exchanger? A heat exchanger is a device that is used to transfer thermal energy (enthalpy) between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact.   The HVAC system is responsible for reversing this natural flow, removing hot air from buildings in the hot summers and placing it in buildings in the cold winters. [1] How does that happen? It’s all about the heat exchanger. What Is a Heat Exchanger in HVAC? A heat exchanger is a device that transfers thermal energy from one medium to another.

    A heat exchanger is a device used to transfer heat between two or more fluids. The fluids can be single or two phase and, depending on the exchanger type, may be separated or in direct contact. Devices involving energy sources such as nuclear fuel pins or fired heaters are not normally regarded as heat exchangers although many of the principles. Description: Industrial DCH radiator units are designed for cooling of water or other process fluids for Diesel and Gas Power Generation. This heat exchanger configuration offers a compact solution with dimensions and capacity range as typically required for Gen-set containers in the Power. Applications: Power Generation; Maximum Working Pressure: psi.

    Download the Excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. These templates use S.I. units and U.S. units. Calculate the required heat transfer area based on values needed. They will also calculate the number of tubes needed for a shell and tube heat exchanger and to calculate the pipe length needed for a double pipe heat exchanger. Fundamentals of heat exchanger design / Ramesh K. Shah, Dusˇan P. Sekulic´. p. cm. Includes index. ISBN 1. Heat exchangers–Design and construction. I. Sekulic´, Dusˇan P. II. Title. TJS42 –dc21 Printed in the United States of America


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Development of a contact heat exchanger for a constructable radiator system Download PDF EPUB FB2

Development of a contact heat exchanger for a constructable radiator system. Houston, Texas: National Aeronautics and Space Administration, Johnson Space Center, July (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: H R Howell; Vought Corporation.; United States.

National Aeronautics and Space Administration. Genre/Form: Online resources: Additional Physical Format: Microfiche: Howell, H. Development of a contact heat exchanger for a constructable radiator system. A contact heat exchanger approach which involves pressurized clamping of a segmented cylindrical heat exchanger on the outside of a round heat pipe evaporator section was designed, fabricated, and tested.

Dry metal-to-metal contact conductance heat transfer is by: 6. To optimize the fan assisted heat exchanger (radiator) by improvement in design. To provide a heat exchanger that will be more efficient and compact. To provide a heat exchanger that will work with minimum power consumption for the fan and with maximum utilization of air Size: KB.

As the air flows through the radiator, the heat is transferred from the coolant to the air. The purpose of the air is to remove heat from the coolant, which causes the coolant to exit the radiator at a lower temperature than it entered at. The benchmark for heat transfer of current radiators is kW of heat at an inlet temperature of 95 °C.

One element of technology that is required for long-life, high-power orbital platforms/stations that is being developed is heat rejection and a space-constructable radiator system. Aspects of this project include high-efficiency fin concepts, a heat pipe quick-disconnect device, high-capacity heat pipes, and an alternate interface heat exchanger by: directions.

Each of the fluids enters the heat exchanger at opposite ends. Because the cooler fluid exits the counter flow heat exchanger at the end where the hot fluid enters 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 Size: KB. During the design of the radiator system heat exchanger, one has to consider that the heat exchanger could be supplying a radiator system with a high- or low-flow adjustment.

A typical high-flow adjusted radiator system has a specific flow rate of –3 l/h per heated m Cited by: 1. of heat exchanger design, sizing and optimizing. Emphasis is on thermo-hydraulic design of the heat exchanger; mechanical design and system optimization are beyond the scope of this guide.

Only recuperators, or heat exchangers where two fluids are separated by the heat transfer surface that normally has no moving parts, are covered. This. The paper considered a review for the design of a shell and tube heat exchanger. Therein, popular analytical techniques such as log mean temperature difference (LMTD) and effectiveness-number of.

with NASA's Constructable Radiator Syacem. The system used long heat pipes ( feet) which are plugged into contact heat exchangers which interface with a flow loop that collects heat from around the spacecraft. The heat pipe needs to have the capability for high performance (in the range of- 1, watt-inches).

The most. Compact Heat Exchangers: Selection, Design, and Operation, Second Edition. is fully revised to present the most recent and fundamental ideas and industrial concepts in compact heat exchanger technology. This complete reference compiles all aspects of theory, design rules, operational issues, and the most recent developments and technological advancements in compact heat exchangers.

space-constructable heat pipe radiator at both and K. A concept similar to the MBR is the liquid-belt radiator (LBR), which was also proposed by Teagan and Fitzgerald. The “heat exchanger” within a car or truck is the radiator, which is at the center of a motor vehicle’s cooling system.

A radiator within a vehicle is an air-to-liquid style heat exchanger constructed of materials such as copper, brass and aluminum. The basic operation of a vehicle’s cooling system consists of a liquid coolant that is. Bolton, in Instrumentation and Control Systems, Application.

The normal domestic central heating system has an on-off controller, though a modern one is more likely to be an electronic on-off sensor rather than a bimetallic strip. Another example of on-off control is the control of a car radiator cooling fan using a temperature-sensitive switch.

This text/reference describes the construction and application of many of the unfired heat exchanger types used in the process industries.

Also provides quick access to heat transfer and pressure loss data, plus manual thermal design methods and examples, for heat.

@article{osti_, title = {Heat exchangers}, author = {Saunders, E A.D.}, abstractNote = {This book describes the construction and application of many of the unfired heat exchanger types used in the process industries.

Also provides quick access to heat transfer and pressure loss data, plus manual thermal design methods and examples, for heat exchangers involving single phase flow duties. Heat exchanger, any of several devices that transfer heat from a hot to a cold fluid.

In many engineering applications it is desirable to increase the temperature of one fluid while cooling another. This double action is economically accomplished by a heat exchanger. Among its uses are the cooling. Study of Thermal Management for Space Platform Applications 5.

Report Date December 6. Performing Organization Code Constructable Radiator Studies Heat Rejection from Module Surfaces i. Interface Concept No Contact Heat Exchanger Interface •. A Heat Pipe Quick Disconnect This paper reports the proof of concept demonstration of a heat pipe quick disconnect being developed for the space constructible radiator system.

The disconnect provides a maintainable coupling between the heat pipe evaporator, which is brazed to a mating heat exchanger, and the replaceable condenser section of a monogroove heat pipe radiator by: 2. 3 Heat exchangers gunt Basic knowledge Heat exchangers in refrigeration used as evaporator/condenser In principle heat exchangers have the purpose to transfer heat from a fl owing substance to another fl ow-ing substance of a lower original temperature.

The substances are gaseous or liquid. Important for the heat transfer isFile Size: KB.Radiator Heat Exchanger - Commonly, heat exchangers are thought of as liquid-to-liquid devices only.

But a heat exchanger is any device that transfers heat from one fluid to another. Some equipment depend on air-to-liquid heat exchangers. The most familiar example of an air-to liquid heat exchanger is a car radiator. The coolant flowing in the engine picks up heat from the engine block and.Thermal management system technology development for space station applications.

high-power orbital platforms/stations that is being developed is heat rejection and a space-constructable radiator system. Aspects of this project include high-efficiency fin concepts, a heat pipe quick-disconnect device, high-capacity heat pipes, and an Author: J.

G. Rankin and P. F. Marshall.