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CH-81-17-4 — Room Flow Tests in a Reduced Scale

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Conference Proceeding by ASHRAE, 1981

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Description

This study concerns the problems and prediction of room flow in air conditioning. By means of a relatively simple example it is shown how difficult it is to form mathematical models, in particular of the three-dimensional flow field occurring in practice.
After basic definitions, an explanation of the influence of different air flow systems on the structure of room flow is given.

easurements and observations found the microstructure of the flow to be extremely complex so that a precise mathematical model formation seems to be impossible. Measurements on isothermal and anisothermal models–reduced from the original supply reliable dimensional results. Similarity-theoretical studies indicate that model tests are principally a useful means of increasing the dimensional certainty, but in order to exactly reproduce the three-dimensional room flow, the test in the scale 1:1 remains essential.

The author refers to the considerable lack of knowledge concerning the influence of the microstructure of a room flow and the resulting influences for the comfort feeling.

Citation: Symposium, ASHRAE Transactions, Volume 87, Part 1, Chicago, Illinois

Product Details

Published:
1981
Number of Pages:
20
File Size:
1 file , 1.2 MB
Product Code(s):
D-CH-81-17-4