1998/1999 research plan—energy efficient building ventilation

Task One: CFD-ACE Comparison of Internal Wind Speed

Manager: Nick Locke

Opus International consultants central laboratories

Comparison of internal air speeds from the wind tunnel and CFD-ACE. This work will be performed jointly. Victoria University of Wellington to provide CFD solutions and details of simulations. Opus to compare CFD and wind tunnel data. Differences in air speed output as contour plots and statistically characterised.
CFD calibration data (full-scale, experimental and CFD results) collated and documented. All this information will be made available through a trial website. This work will be performed jointly between Opus and Victoria University of Wellington.
Jointly decide on a suitable, available, 'test case' building to be studied in 1999/2000.
Construct wind tunnel pressure model of the test case building. Work performed by Opus.
Jointly purchase and evaluate 'Flovent' computer software. This will involve a brief study of external pressures and internal air flows for the 'Texas Tech Building', modelled using Flovent and compared with 1997/98 calibration data. Numerical modelling will be performed by both Opus and Victoria University of Wellington. (Building and developing the numerical model for test case building will be done in 1999/2000 when the CFD output is actually being used.)

Manager: Mike Donn

Centre for Building Performance Research

Errors in Dynamic Thermal Modelling Due to Microclimate Data

The School of Architecture and Design weather station needs to be upgraded to include the measurement of solar radiation. Opus is to calibrate an emometer and help with data acquisition set-up.
Continous 12 month record of wind, temperature, humidity, and solar radiation data to be collected from the School of Architecture and Design weather station and obtain corresponding meteorological data for the general Wellington area.
Victoria University of Wellington to design, organise and resource a study of the effect site-specific climate data has on dynamic thermal modelling. Opus to help with analysis of climate data where required.
Provide climate data and documented results and conclusions.

Manager: Peter Cenek

Opus International Consultants Central Laboratories

Opus to design, organise and resource a study of traffic noise modelling in an urban environment. The School of Architecture and Design and surrounding streets will be used as a test case situation for physical measurements and numerical modelling. Victoria University of Wellington to provide access, where reasonable, to the School of Architecture and Design building for noise measurements.
Provide documented results and conclusions.

Manager: Nick Locke

Opus International Consultants Central Laboratories Noise Ingress and Pressure Differences Across Building Openings

Perform a literature search on noise ingress and air pressure differences across typical building openings found in naturally ventilated buildings, and identify gaps in the knowledge or prediction techniques. Opus to organise literature search.
Jointly review results of literature search and decide on experimental investigations and analysis to be performed. Aim toward a predictive capability rather than simply generating experimental results for untested building openings. Opus to organise experimental program. Sound equipment available from Victoria University of Wellington.
Provide documented results and conclusions

Manager: Nick Locke

Opus International Consultants Central Laboratories

Noise Ingress and Pressure Differences Across Building Openings

Perform a literature search on noise ingress and air pressure differences across typical building openings found in naturally ventilated buildings, and identify gaps in the knowledge or prediction techniques. Opus to organise literature search.
Jointly review results of literature search and decide on experimental investigations and analysis to be performed. Aim toward a predictive capability rather than simply generating experimental results for untested building openings. Opus to organise experimental program. Sound equipment available from Victoria University of Wellington.
Provide documented results and conclusions