Accession Number : AD0003635


Title :   Design and Development of Experimental Model Condensing Unit


Descriptive Note : Final rept.


Corporate Author : LITTLE (ARTHUR D) INC CAMBRIDGE MA


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/003635.pdf


Report Date : Feb 1953


Pagination or Media Count : 52


Abstract : Research was undertaken to investigate means for preventing the formation of fog resulting from operation of internal combustion engines in polar regions. From fundamental psychometric data a general theory of operation was developed defining the limiting requirements for any successful system. This theory was proven by construction and test of prototype units meeting the requirements. Tests on the final heat-exchanger unit were performed at various cold-chamber temperatures from 0 deg down to -70 deg F. The unit was effective in preventing the formation of fog under all of the conditions tested. The total volume of surfaces of the final arrangement chosen was 0.087 cu ft; weight 3.6 lbs; and blower power 0.00265 of the theoretical air horsepower. Transposed to a 100-hp unit, the indicated size of the parallel exchanger surface sections would be approximately 10 x 12 x 48 in., which would replace the present muffler. Blower power would be about 0.5 hp. This size could be reduced materially at the expense of increased air horsepower.


Descriptors :   *HEAT EXCHANGERS , REQUIREMENTS , POLAR REGIONS , VOLUME , TEST EQUIPMENT , SURFACES , FOG , POWER , HORSEPOWER , BLOWERS , INTERNAL COMBUSTION ENGINES , PSYCHOMETRICS , OPERATION , LIMITATIONS , COSTS , AIR , THEORY , PROTOTYPES


Subject Categories : Reciprocating and Rotating Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE