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Principles for design of all-air systems
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
2001 (English)In: PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON INDOOR AIR QUALITY, VENTILATION AND ENERGY CONSERVATION IN BUILDINGS, VOLS I-III, HONG KONG: CITY UNIVERSITY HONG KONG , 2001, 1129-1136 p.Conference paper, Published paper (Other academic)
Abstract [en]

This is a theoretical study on how to improve the optimisation of the all-air system. The economizer cycle was designed to distribute heat and cold with the supply air. To reduce the investment in heating and cooling capacity the outdoor air rate was reduced to the minimum outdoor air rate during high and low temperatures. This was as close to the economical optimum as possible with the control equipment available in the 1920-thies. An improved optimisation gives that the optimal outdoor air rate in the winter is higher than in the summer, because cooling is more expensive than heating. The optimal outdoor air rate is higher than the free outdoor air rate during free-cooling and the optimal outdoor air rate is higher than the minimum or acceptable outdoor air rate, except at the hot outdoor temperature. It is also possible to calculate better design temperatures, than the two and three design temperatures given in ASHRAE Handbook, if the derived equations are solved.

Place, publisher, year, edition, pages
HONG KONG: CITY UNIVERSITY HONG KONG , 2001. 1129-1136 p.
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:miun:diva-13558ISI: 000178473300142ISBN: 962-442-190-0 (print)OAI: oai:DiVA.org:miun-13558DiVA: diva2:413918
Note
4th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings (IAQVEC 2001), CHANGSHA, PEOPLES R CHINA, OCT 02-05, 2001Available from: 2011-04-29 Created: 2011-04-19 Last updated: 2011-05-29Bibliographically approved

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