CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

authors Mahdavi, A., Mathew, P., Hartkopf, V. and Loftness, V.
year 1996
title Bi-directional Inference in Thermal Design
source Design Computation: Collaboration, Reasoning, Pedagogy [ACADIA Conference Proceedings / ISBN 1-880250-05-5] Tucson (Arizona / USA) October 31 - November 2, 1996, pp. 133-143
summary This paper demonstrates a computational bi-directional energy modeling approach for building design development. Conventional simulation tools may be labeled as mono-directional in that they require a more or Iess complete design definition in order to derive performance indicators. However, in certain circumstances, it may be desirable to reverse this process: a bi-directional (or "open") inference mechanism would allow for the identification of those changes in the design variables that would accommodate a desired change in a performance indicator. The performance-to-design mapping process is an ambiguous one: the same performance (e.g. energy use of a building, temperature variations in a space) may be achieved by different design configurations (various wall and window dimensions/properties, building orientation/massing, etc.). As a result, the actual implementation of a bi-directional inference tool is a rather difficult task. The development described in this paper utilizes a preference-based approach that involves the formalization of various external or internal constraints and preferences (such as code and standard requirements, results of post-occupancy studies, individual priorities of designers and their clients, etc.) in terms of normalized numeric scales.

After a brief review of the underlying technology for the implementation of the inference engine, the paper demonstrates an actual design session using a bi-directional thermal simulation tool. Specifically, a use-scenario is described in which the designer explores the tradeoffs between various design variables (glazing area, glazing type, and floor mass) in view of the resulting energy performance of a typical residential building. The paper concludes with a discussion of the potential and limitations of the bi-directional approach toward active convergence support for performance-oriented design development.

series ACADIA
email amahdavi@tuwien.ac.at
full text file.pdf (1,250,404 bytes)
references Content-type: text/plain
details citation check to select
100%; open Buckley, M. (1988) Find in CUMINCAD Multicriteria Evaluation: Measures, Manipulation, and Meaning , Environment and Planning B.-Planning and Design, Volume 15, pp. 55-64
100%; open Mahdavi, A. and Berberidou-Kallivoka, L. (1993) Find in CUMINCAD A 'Two-way Inference Approach' to Daylighting Simulation , Journal of the Illuminating Engineering Society, Winter 1993
100%; open Mahdavi, A. and Berberidou-Kallivoka, L. (1994) Find in CUMINCAD GESTALT: A Prototypical Realization of an 'Open' Daylighting Simulation Environment , Journal of the Illuminating Engineering Society. Volume 23, Number 2, Summer 1994. pp. 62 - 71
100%; open Mahdavi, A. and Mathew, P. (1995) Find in CUMINCAD Synchronous Generation of Homologous Representations in an Active MultiAspect Design Environment , Proceedings, Fourth Intemational Conference, Intemational Building Performance Simulation Association, Madison, Wl. pp. 522-528
100%; open Mahdavi, A. and Mathew, P. (1996) Find in CUMINCAD Implementation Strategies for Open Inference Design Environments , ITCSED '96 Conference, Glasgow, U.K. (to be published)
100%; open Mahdavi, A. and Suter, G. (1995) Find in CUMINCAD On Implementing a Computational Facade Design Tool , Environment and Planning B.-Planning and Design. (to be published)
100%; open Mahdavi, A., Loftness, V., Mathew, P., Brahme, R., Kumar, R., and Wong, N.H. (1996) Find in CUMINCAD Integrated Modeling of the Thermal Environment , Proceedings of the 1996 International Symposium of CIB W67 (Energy and Mass Flows in the Life Cycle of Buildings). Vienna, Austria. (to be published)
100%; open Mahdavi, A. (1993) Find in CUMINCAD Open Simulation Environments: A 'Preference-Based' Approach , U. Flemming and S. Van Wyk (eds.), CAAD Futures '93, pp. 195-214
100%; open Mahdavi, A. (1995) Find in CUMINCAD SEMPER: A Computational Tool for Active and Multi-Domain Design and Evaluation Support , CBPD-Report No. 95-04-01, Center for Building Performance and Diagnostics, Camegie Mellon University, Pittsburgh, PA (submitted to the U.S. Department of Energy)
100%; open Mahdavi, A. (1996) Find in CUMINCAD Computational Support for Performance-based Reasoning in Building Design , CIB-ASTMISO-RILEM Intemational Symposium "Applications of the Performance Concept in Building". Tel Aviv, Israel. (to be published)
100%; open Mathew, P. (1996) Find in CUMINCAD Integrated Energy Modeling for Computational Building Design Assistance , Ph.D. Thesis. Department of Architecture, Camegie Mellon University. Pittsburgh PA
100%; open Winston, W. (1991) Find in CUMINCAD Mathematical Programming Applications and Algorithms , PWS-Kent Publishing Company, Boston, MA
100%; open Yen, J. (1971) Find in CUMINCAD Finding the K Shortest Loopless Paths in a Network , Management Science Vol. 17, No. 11, July 1971. pp. 712-716

last changed 2003/02/26 16:26
HOMELOGIN (you are user _anon_746178 from group guest) Works Powered by SciX Open Publishing Services 1.002