Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat Recirculation Induced by Thermal Diffusers
A unidirectional multiport thermal diffuser discharges large quantities of condenser cooling water in the form of a line of turbulent heated jets near the bottom of the receiving waterbody. The large momentum input induces a large mixed flow compared with the discharge flow, causing rapid temperature reduction within a relatively small area. This paper presents the results of an experimental study which demonstrates that under certain conditions the large back entrainment demand coupled with momentum dissipation (due to bottom friction) of the diffuser plume may generate recirculation of the mixed flow back into the near field, leading to temperatures significantly higher than previously predicted. Length and time scales of recirculation are estimated: the transient maximum temperature rise is correlated with the length scale of recirculation and the sink strength.
Heat Recirculation Induced by Thermal Diffusers
A unidirectional multiport thermal diffuser discharges large quantities of condenser cooling water in the form of a line of turbulent heated jets near the bottom of the receiving waterbody. The large momentum input induces a large mixed flow compared with the discharge flow, causing rapid temperature reduction within a relatively small area. This paper presents the results of an experimental study which demonstrates that under certain conditions the large back entrainment demand coupled with momentum dissipation (due to bottom friction) of the diffuser plume may generate recirculation of the mixed flow back into the near field, leading to temperatures significantly higher than previously predicted. Length and time scales of recirculation are estimated: the transient maximum temperature rise is correlated with the length scale of recirculation and the sink strength.
Heat Recirculation Induced by Thermal Diffusers
Lee, Joseph H. W. (Autor:in) / Harleman, Donald R. F. (Autor:in) / Jirka, Gerhard H. (Autor:in)
Journal of the Hydraulics Division ; 105 ; 1219-1231
01.01.2021
131979-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Ventilation systems with local recirculation diffusers
| Online Contents | 2014
Thermal comparison between ceiling diffusers and fabric ductwork diffusers for green buildings
| Online Contents | 2011
Internal Hydraulics of Thermal Discharge Diffusers
| ASCE | 2021
Internal hydraulics of thermal discharge diffusers
| TIBKAT | 1970
| British Library Online Contents | 2002