Description

Outlines the details of a mathematical model to predict the transient thermal performance of a latent heat, thermal energy storage system. The phase-change material is held in flat, rectangular containers stacked on top of each other with spacing in between successive containers to provide flow channels for the heat transfer fluid. The model takes into account the details of unsteady conductive heat transfer in the liquid and solid phases of the phase-change material and in the container wall. The extent of liquid and solid phases is predicted from first principles alone. Unsteady convective heat transfer in the heat transfer fluid is also incorporated into the model. Examples of the detailed information the model makes available are presented. A comparison is made of the model’s predictions with actual field data from a large cool storage installation.

KEYWORDS: calculating, changing physical state, materials, energy storage, heat flow, transient, latent heat storage, heat transfer fluids, non steady state, thermal conductivity, comparing, air conditioning, off peak

Citation: ASHRAE Transactions, vol.97, pt. 2, Indianapolis, IN 1991

Product Details

Published:

1991

File Size:

1 file , 1.9 MB

Product Code(s):

D-18035