Accession Number:

ADA273511

Title:

Flow and Temperature Distribution in a Naturally Stratified Thermal Storage Tank

Descriptive Note:

Final rept.

Corporate Author:

CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL ENERGY AND UTILITIES SYSTEMS DIV

Personal Author(s):

Report Date:

1993-10-01

Pagination or Media Count:

37.0

Abstract:

Thermal energy storage for building and process cooling is employed in two principal forms sensible and latent. Each form has its advantages and disadvantages. Currently, water is the most frequently used storage medium for cooling, with the solidliquid phase change being used for latent storage and chilled liquid water used for sensible storage. This report deals exclusively with sensible storage in water. Researchers studied the effects of mixing on the creation and maintenance of a thermocline during the charging of a thermal storage tank for cooling and the effects of momentum of inlet fluid and buoyancy due to temperature differences on the creation and maintenance of thermoclines. From the design point of view, the inlet parameters and their ranges for optimal performance of a stratified thermal storage tank have been more clearly delineated. The upper limit of the range of the Reynolds number for optimal stratified chilled water storage tank performance appears to be between 400 and 600. The upper limit of the densimetric Froude number range was determined in a previous study, and is about 2. Sensible storage, Thermal storage tank.

Subject Categories:

  • Air Conditioning, Heating, Lighting and Ventilating
  • Containers and Packaging
  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE