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Design considerations for lightweight space radiators based on fabrication and test experience with a carboncarbon composite prototype heat pipe

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Book Synopsis Design considerations for lightweight space radiators based on fabrication and test experience with a carboncarbon composite prototype heat pipe by :

Download or read book Design considerations for lightweight space radiators based on fabrication and test experience with a carboncarbon composite prototype heat pipe written by . This book was released on . Available in PDF, EPUB and Kindle. Book excerpt:

Radiators in Hydronic Heating Installations

2017-03-21 Technology & Engineering
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Release : 2017-03-21
Genre : Technology & Engineering
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Book Rating : 422/5 ( reviews)

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Book Synopsis Radiators in Hydronic Heating Installations by : Damian Piotr Muniak

Download or read book Radiators in Hydronic Heating Installations written by Damian Piotr Muniak. This book was released on 2017-03-21. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses key design and computational issues related to radiators in hydronic heating installations. A historical outline is included to highlight the evolution of radiators and heating technologies. Further, the book includes a chapter on thermal comfort, which is the decisive factor in selecting the ideal heating system and radiator type. The majority of the book is devoted to an extensive discussion of the types and kinds of radiators currently in use, and to identifying the reasons for the remarkable diversity of design solutions. The differences between the solutions are also addressed, both in terms of the effects of operation and of the thermal comfort that needs to be ensured. The book then compares the advantages and disadvantages of each solution, as well as its potential applications. A detailed discussion, supported by an extensive theoretical and mathematical analysis, is presented of the computational relations that are used in selecting the radiator type. The dynamics of radiator heat output regulation are also covered, with particular emphasis on underfloor-surface radiators, for which this aspect is particularly important. The book closes with a chapter presenting computational examples. It includes numerous examples of calculations for all essential thermal parameters of radiator operation in heating installations.

Radiators for Aircraft Engines

1922 Airplanes
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Release : 1922
Genre : Airplanes
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Book Synopsis Radiators for Aircraft Engines by : Samuel Reynolds Parsons

Download or read book Radiators for Aircraft Engines written by Samuel Reynolds Parsons. This book was released on 1922. Available in PDF, EPUB and Kindle. Book excerpt:

The Drag of Airplane Radiators with Special Reference to Air Heating (comparison of Theory and Experiment)

1939 Air flow
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Release : 1939
Genre : Air flow
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Book Synopsis The Drag of Airplane Radiators with Special Reference to Air Heating (comparison of Theory and Experiment) by : B. Göthert

Download or read book The Drag of Airplane Radiators with Special Reference to Air Heating (comparison of Theory and Experiment) written by B. Göthert. This book was released on 1939. Available in PDF, EPUB and Kindle. Book excerpt: This report contains a survey of past radiator research. This report also is intended as a systematic comparison of theoretical and experimental radiator drag, with the object of ascertaining the most important loss sources and their interaction in different cases of installation, and to separate the radiator systems which are amenable to calculation, both as regards axial flow and drag. The sources of loss due to the diffuser are to be looked into closely as in many cases they can be of preeminent magnitude and their customary appraisal, according to Fliegner's formula, does not meet actual conditions. Besides, generally applicable equations and charts are developed for the rapid determination of the heating effect of radiators as regards flow and drag, and then checked by routine tests on hot radiators.

Weight Study of Partially Segmented Direct-condensing Radiators for Large Space Power Systems

1966 Radiators
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Release : 1966
Genre : Radiators
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Book Synopsis Weight Study of Partially Segmented Direct-condensing Radiators for Large Space Power Systems by : Roy L. Johnsen

Download or read book Weight Study of Partially Segmented Direct-condensing Radiators for Large Space Power Systems written by Roy L. Johnsen. This book was released on 1966. Available in PDF, EPUB and Kindle. Book excerpt: An analytical investigation has been performed to provide an insight into the weight increase of a direct-condensing radiator for a potassium Rankine cycle space power system as the system size was increased from 1 to 10 megawatts electric while holding constant the component efficiencies and all cycle temperatures and pressures. The largest single contributor to the radiator weight is the armor necessary to protect fluid passages from meteoroid puncture. The two most important factors affecting armor thickness are the meteoroid population estimate and the radiator design survival probability. Design survival probabilities of 0. 9, 0. 95, and 0. 99 were used with a high meteoroid population estimate, Whipple's (1961), and a low estimate, Watson's (1956), for 1, 10, 20, and 100 radiator segments. The radiator weight is sharply influenced by the meteoroid flux estimate and the design survival probability. For the unsegmented case, using Watson's (1956) flux estimate, the radiator weight ranged from 1. 5 to 3 pounds per kilowatt electric for the 1-to 10-megawatt power range for a 0. 9 radiator design survival probability, and 2. 5 to 6 pounds per kilowatt for a 0. 99 design survival probability. When Whipple's (1961) flux estimate was used, the radiator weight ranged from 7 to 17 pounds per kilowatt for a 0. 9 design survival probability and from 16 to 42 pounds per kilowatt for a 0. 99 design survival probability. Segmentation of the radiator provided significant weight savings over the unsegmented radiator, especially when high survival probabilities were demanded. Generally the weight advantages of segmentation increased with increases in system power level, design survival probability, number of segments, and severity of the meteoroid flux estimate.

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