Paper 1: Volume 5 No.2 Sept 2006 Edition
Cold
Storage with Phase Change Material for Building Ventilation
Vincenc
Butala and Uroš Stritih
University
of
Ljubljana
,
Faculty of Mechanical Engineering
Aškerčeva
6, 1000
Ljubljana
,
Slovenia
Abstract
This
paper presents an experimental and numerical analysis of building cooling
using night-time cold accumulation in phase change material (PCM),
otherwise known as the “free-cooling” or “passive-cooling”
principle. The phase change materials were used in ceilings and floors.
The free-cooling principle is explained and some of the types of PCMs
suitable for summer cooling
are listed. An experiment was conducted using paraffin with a melting
point of 22 °C as the PCM to store cold during the night and to cool hot air during
the daytime in summer. Air temperatures and heat fluxes, as a function of
time and dimensionless cold discharging values, are presented for
different air velocities. Experimental analysis over a one week measuring
period, under real conditions, is presented in order to show how cold
storage functions.
Key words: phase
change material, free cooling, cold storage, experimental and numerical
analysis.
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Contents
Paper 1
Cold
Storage with Phase Change Material for Building Ventilation:
Butala,
V. and Stritih, U.
Paper
2
Active
Thermal Control for Traditional Naturally Ventilated Buildings:
Su, B.
Paper
3
CFD-Aided
Tenability Assessment of Railway Tunnel Train Fire Scenarios:
Liu, Y., Liu, X. and Paroz, B
Paper
4
CFD
Modelling of Cabin Air Ventilation in the International Space Station: A
Comparison of RANS and LES Data with Test Measurements for the
Columbus
Module:
Smirnov, E. M., Ivanov, N. G., Telnov, D. S. and Son, C. H.
Paper
5
Comparative
Energy Analysis of a Constant Air Volume (CAV) System and a Variable Air
Volume (VAV) System for a Software Laboratory: Kalaiselvam,
S., Vidhya sagar Velichet, Iniyan, S. and Anand A. Samuel.
Paper
6
Experimental
Evaluation of Airflow in a
Low-Energy
Building
:
Karlsson, J. F.
Paper
7
Infiltration
of Outdoor Air in Two Newly Constructed High Rise Residential
Buildings:
Lam, K.S., Chan, D.W.T., Chan, E.H.W., Tai, C.T., Fung, W.Y.
and Law, K.C
Paper
8
Air
Quality Inside a
School
Building
: Air Exchange Monitoring, Evolution of Carbon Dioxide and Assessment of
Ventilation Strategies:
Conceição,
E. Z. E. and Lúcio, M. M. J. R.
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