A Nodal Model for Displacement Ventilation and Chilled Ceiling Systems in Office Spaces

TitleA Nodal Model for Displacement Ventilation and Chilled Ceiling Systems in Office Spaces
Publication TypeJournal Article
Year of Publication2001
AuthorsRees, Simon J., and Philip Haves
JournalBuilding and Environment
Volume36
Start Page753
Issue6
Pagination753-762
Date Published07/2001
KeywordsChilled ceilings, commercial buildings, Displacement ventilation, energy, Heat Transfer, Nodal model, simulation
Abstract

A nodal model has been developed to represent room heat transfer in displacement ventilation and chilled ceiling systems. The model uses precalculated air flow rates to predict the air temperature distribution and the division of the cooling load between the ventilation air and the chilled ceiling. The air movements in the plumes and the rest of the room are represented separately using a network of ten air nodes. The values of the capacity rate parameters are calculated by solving the heat and mass balance equations for each node using measured temperatures as inputs. Correlations between parameter values for a range of cooling loads and supply air flow rates are presented.

URLhttp://www.ibpsa.org/proceedings/BS1999/BS99_D-05.pdf
DOI10.1016/S0360-1323(00)00067-6