NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.66 [2007] >
JSIR Vol.66(06) [June 2007] >


Title: Capric acid and palmitic acid eutectic mixture applied in building wallboard for latent heat thermal energy storage
Authors: Karaipekli, Ali
Sari, Ahmet
Keywords: Capric acid
Latent heat thermal energy storage
Palmitic acid
Phase change wallboard
Thermal properties
Thermal reliability
Issue Date: Jun-2007
Publisher: CSIR
IPC CodeE04B1/99
Abstract: The paper aims: (1) preparation of the phase change gypsum wallboard as novel phase change wallboard (PCW) incorporating with the eutectic mixture of capric acid (CA) and palmitic acid (PA) for latent heat thermal energy storage; (2) determination of thermal properties and thermal reliability of prepared PCW using differential scanning calorimetry (DSC) technique; and (3) estimation of thermal performance of PCW by preparing a simple test cell. Maximum CA/PA eutectic mixture as phase change material absorbed in PCW was about 25 wt% of total weight. No leakage of the mixture from PCW was observed after 5000 thermal cycling. The melting and freezing temperatures and latent heats of PCW were measured as 22.94 and 21.66°C, 42.54 and 42.18 J/g, respectively by DSC analysis. These properties make it functional as TES medium, which can be applied to peak load shifting, improved use of waste heat and solar energy as well as more efficient operation of heating and cooling equipment. In addition, PCW has good thermal reliability in terms of the changes in its thermal properties after accelerated 1000, 2000, 3000, 4000, and 5000 thermal cycling. Use of such PCW can decrease indoor air fluctuation and have the function of keeping warmth to improve indoor thermal comfort due to absorption of heat in conjunction with melting of the eutectic mixture.
Page(s): 470-476
ISSN: 0022-4456
Source:JSIR Vol.66(06) [June 2007]

Files in This Item:

File Description SizeFormat
JSIR 66(6) (2007) 470-476.pdf117.26 kBAdobe PDFView/Open
 Current Page Visits: 1020 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 637918 since 06-Feb-2009  Last updated on 15-Dec-2014Webmaster: nopr@niscair.res.in