Multi-zone models generally take into account: mechanical ventilation, tightness of buildings, and terrain, shielding and climate conditions. The output of these models include air flow rates across the envelopes, between the rooms and through the mechanical ventilation system. A multi-zone model is used to illustrate the potential of the multi-zone modelling in indoor air flow and air quality analyses. The model is applied to study the interaction between infiltration and mechanical ventilation, to develop simplified models for combining natural ventilation and exhaust ventilation, to understand smell transfer in a single family house, and to supply general flow boundary conditions in a computational fluid dynamics (CFD) prediction. Mechanical ventilation will change from the design data due to the changing of indoor pressure. To consider the influence of infiltration, the quadrature and exponential superposition models give the best estimate of combined total flow rate. A change in the distribution of leakage or an opening can result in a different air flow rate and direction, and thus a different level of indoor air quality. By using the results from the multi-zone model as flow boundary conditions in a CFD code, an example calculation in a 13-room building shows that infiltration considerably influences indoor air flow pattern.

Keywords:
Multi-zone models, Infiltration, Indoor air quality, Ventilation system, Air flow simulation
This content is only available via PDF.
1993
Copyright / Drug Dosage / Disclaimer
Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.
You do not currently have access to this content.