Experimental and numerical study of mixing in a horizontal hot-water storage tank

A. Aviv, S. Morad, Y. Ratzon, G. Ziskind, R. Letan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thermal mixing and stratification are explored experimentally in a horizontal cylindrical tank, which simulates a storage of water heated by a solar collector. The tank is 70 cm long and 24 cm in diameter. The study is conducted in a transient mode, namely, the tank is filled with hot water, which in the course of operation is replaced by the tap water in a stratified way or by mixing. The flow rates of 2, 3, 5 and 7 liters per minute are explored. Temperature of hot water is usually about 55 °C., while the tap water is about 20 °C. In the experiments, both flow visualization and temperature measurements are used. The effects of port location and deflector installation are examined. The experimental results are presented in a dimensionless form, as the normalized outlet temperature vs. dimensionless time. Three-dimensional transient numerical simulations, done using the Fluent 6 software, provide an additional insight in the process of mixing inside the tank.

Original languageEnglish
Title of host publication2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008
Pages591-597
Number of pages7
StatePublished - 19 Oct 2009
Event2008 2nd International Conference on Energy Sustainability, ES 2008 - Jacksonville, FL, United States
Duration: 10 Aug 200814 Aug 2008

Publication series

Name2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008
Volume2

Conference

Conference2008 2nd International Conference on Energy Sustainability, ES 2008
Country/TerritoryUnited States
CityJacksonville, FL
Period10/08/0814/08/08

Fingerprint

Dive into the research topics of 'Experimental and numerical study of mixing in a horizontal hot-water storage tank'. Together they form a unique fingerprint.

Cite this