Artificial neural networks for predicting air flow in a naturally ventilated test room - S.A. Kalogirou, M.M. Eftekhari, D.J. Pinnock
@article{Kalogirou2001,
abstract = {The objective of this research is to investigate air flow distribution inside a light weight test room which is naturally ventilated using artificial neural networks. The test room is situated in a relatively sheltered location and is ventilated through adjustable louvres. Indoor air temperature and velocity are measured at four locations and six different levels. The outside local temperature, relative humidity, wind velocity and direction are also monitored. The collected data are used to predict the air flow across the test room. A multi-layer feedforward neural network was employed with three hidden slabs. Satisfactory results with correlation coefficients equal to 0.985 and 0.897, for the indoor temperature and combined velocity, respectively have been obtained when unknown input data, not used for network training, were used as input. Both values are satisfactory especially if the fact that combined velocity readings were very unstable is considered. The work presented in this paper primarily aims to show the suitability of neural networks to perform such predictions. In order to make the method more usable the training database needs to be enriched with readings from actual measurements from a number of applications.},
author = {Kalogirou, S.A. and Eftekhari, MM and Pinnock, DJ},
doi = {10.1191/014362401701524145},
file = {::},
issn = {01436244},
journal = {Building Services Engineering Research and Technology},
month = may,
number = {2},
pages = {83},
publisher = {SAGE Publications},
title = {{Artificial neural networks for predicting air flow in a naturally ventilated test room}},
url = {http://bse.sagepub.com/content/22/2/83.short},
volume = {22},
year = {2001}
}
Key Points
- Max temperature modelling error of 2.30C
Neural network to investigate airflow distribution in a test cell. Temperature, humidity, wind-velocity, and wind-direction were gatehred for input. Temperature predictions were also made.
Unstable wind velocity and direction do not tend to effect accuracy in this system.
Temperature accuracy statistics not really explored, but gave a max error of 2.30C