Accession Number : ADA800033


Title :   The Thermal Evaluation of Air-Cooled Electronic Equipment


Descriptive Note : Technical rept. no. 2, Oct 1950-Aug 1952


Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS


Personal Author(s) : Robinson, Walter ; Zimmerman, R H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a800033.pdf


Report Date : Sep 1952


Pagination or Media Count : 426


Abstract : Air-cooled electronic equipments designed for airborne application are classified according to their cooling methods. Basic thermal test methods and techniques of making the necessary measurements are described with emphasis on bench testing. Calculation methods for the prediction of altitude performance from bench test data are presented. The analysis of altitude chamber test data and calculation methods for their correction are discussed for equipments which cannot be evaluated by bench tests only, and for other equipments for which certain data may be conveniently secured by altitude chamber test. Methods applicable to various types of equipment for evaluation of non-steady state operation are covered in detail. One chapter is devoted to the theory, performance, evaluation and selection of cooling blowers. Throughout the report, charts are presented which allow graphical means to be utilized to a great extent for purposes of analysis. All methods are illustrated by means of examples listed in the Contents. Physical property data, air flow theory, blower test methods and details of experimental apparatus are presented in the appendices.


Descriptors :   *ELECTRONIC EQUIPMENT , *AIR COOLED , *FANS , TEST METHODS , ALTITUDE CHAMBERS , HEAT EXCHANGERS , COOLING , BLOWERS , AIRBORNE , HEAT TRANSFER , THERMAL PROPERTIES , CONVECTION


Subject Categories : Air Condition, Heating, Lighting & Ventilating


Distribution Statement : APPROVED FOR PUBLIC RELEASE