Thermal Performance of Microencapsulated Phase Change Material Slurry

Alvarado, Jorge L.; Jones, Barclay G.; Marsh, Charles P.; Kessler, David A.; Sohn, Chang W.; Feickert, Carl A.; Phetteplace, Gary E.; Crowley, Eric D.; Franks, Ryan J.; Carlson, Thomas A.

Thermal Performance of Microencapsulated Phase Change Material Slurry

Active / Technical Report | Accession Number: ADA489758 |

Abstract:

The efficiency of a pumped heat-transfer system can be greatly increased by incorporating a phase-change material PCM. Because PCMs have greater thermal capacity than the carrier fluid, owing to their latent heat of phase change, they can increase the amount of heat transfer at equivalent volumetric flow in a heat exchanging environment. These materials tend to clog heat-transfer and distribution pipes, but previous research has indicated that the problem may be solved by encapsulating the PCMs. This report documents an investigation of the thermophysical properties of PCMs enclosed in micro-scale capsules. The study also addressed microcapsule durability against abrasion and chemicals, and the relation of fluid temperature and particle volume fraction on viscosity.The results of this research show that the total heat capacity of microencapsulated PCM MPCM slurries is enhanced significantly, even when using low volume fractions. MPCM slurries have potential to decrease costs and improve energy efficiency for all pumped cooling applications.

Author(s):

Alvarado, Jorge L. ; Jones, Barclay G. ; Marsh, Charles P. ; Kessler, David A. ; Sohn, Chang W. ; Feickert, Carl A. ; Phetteplace, Gary E. ; Crowley, Eric D. ; Franks, Ryan J. ; Carlson, Thomas A.

Author Organization(s):

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS

Descriptive Note:

Final rept.

Supplementary Note:

The original document contains color images. DOI: 10.21236/ADA489758

Pagination:

0085

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

Distribution Statement:

Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

ERDC-TR-08-4

Monitor Series:

USACE

Subject Terms

Joint Capability Areas:

JCA_4.6_Engineering; JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_5.3_Planning; JCA_4.6.1_General Engineering; JCA_1.2.5_Lessons Learned; JCA_4.1_Deployment and Distribution; JCA_1.2.3_Educating

Communities of Interest:

Energy and Power Technologies

Descriptor(s):

*CRYSTALLIZATION, *ENCAPSULATION, *HEAT TRANSFER, *DIFFERENTIAL SCANNING CALORIMETRY, CHEMICALS, LATENT HEAT, FLUIDS, SPECIFIC HEAT, PUMPING, ABRASION, THERMOPHYSICAL PROPERTIES, PERFORMANCE(ENGINEERING), MODELS, VOLUME, THERMAL PROPERTIES, COOLING

Field(s)/Group(s):

Thermodynamics

Keyword(s):

MPCM(MICROENCAPSULATED PHASE CHANGE MATERIALS), TETRADECANOL, PCM(PHASE CHANGE MATERIAL)

Report Date:

2008 Mar 01

Creation Date:

2008 Dec 10