“APPLICATION OF PCM IN CONSTRUCTION OF BUILDINGS”

PRESENTED BY Mr. SWAPNIL SHAHADE

  Co-Guide Guide

Prof. P.R.INGOLE Prof T.B.KATHOKE

DEPARTMENT OF MECHANICAL ENGINEERING JAWAHARLAL DARDA INSTITUTE OF ENGINEERING AND TECHNOLOGY, YAVATMAL

2014-15

Contents Introduction How PCM Works Classification of PCM Method of Incorporation of PCM In Concrete PCM Material Used Specification of Concrete Block Process Results Conclusion References

Introduction

Phase change materials (PCM) are ‘‘latent’’ thermal storage materials possessing a large amount of heat energy stored during its phase change stage .The energy required to change the phase of a substance is known as latent heat.

In this project we are using pcm integrated into building materials for thermal energy storage applications, and much attention has been given to works concerned with the achievement and assessment of applying pcm in concrete wall. Because concrete have high specific heat capacity as well as the thermal conductivity which will eventually affect their thermal performance.

Objectives

Analyse Or To Determine How Much Temperature Of Wall Can Be Reduced By Using PCM Material In Concrete Wall.

To Reduce Energy Required For Heating, Cooling And Ventilation Of Buildings.

How PCM Works

Classification of PCM

Method of Incorporation of PCM In Concrete

Concrete wall incorporated with PCM Heat absorbed Heat released Solar Radiations Figure . Heating and cooling function of concrete wall incorporated with PCM.

SUN

IMPREGNATION

IMMERSIONS

DIRECT MIXING

PCM Material used

Paraffin Wax

Bee Wax

Concrete Block

Specification of Concrete Block in Which The PCM Material is ImplementedDimension of concrete block Length-40cm ,height-20cm, width 10cm

Dimension in which material is usedLength-14cm,width-10cm,depth-14 cm

Process Melting of PCM Material

Pouring of PCM in Concrete block

Final Cavity of Beewax

Final Cavity of Paraffin Wax

Measuring Temprature of concrete block

Readings of Paraffin WaxSR.NO. TIME

 SURFACE TEMPERATURE(T1)

INSIDE TEMPERATURE(T2)

TEMPERATURE DIFFERENCE(T1 –T2)

1  11.00AM  41  36.3  4.7

2  12.00PM  43.6  36.9  6.7

3  1.00PM  44.3  37.1  7.2

4  2.00PM  44.1  37.3  6.8

5  3.00PM  43.5  37.1  6.4

6  4.00PM  40.9  36.8  4.1

Results

SR.NO. TIME 

SURFACE TEMPERATURE(T1)

INSIDE TEMPERATURE(T2)

TEMPERATURE DIFFERENCE(T1 –T2)

1  11.00AM  42.3  37  5.3

2  12.00PM  44.2  38.9  5.3

3  1.00PM  44.3  39.1  5.2

4  2.00PM  43.9  39  4.9

5  3.00PM  43.6  38.7  4.9

6  4.00PM  41.3  37.3  4

Readings of Beewax

SR.NO. TIME 

SURFACE TEMPERATURE(T1)

INSIDE TEMPERATURE(T2)

TEMPERATURE DIFFERENCE(T1 –T2)

1  11.00AM  42.2  39.5  2.6

2  12.00PM  44.2  40.2  4

3  1.00PM  43.3  40.5  2.8

4  2.00PM  43  39.9  3.1

5  3.00PM  42.7  39.7  3

6  4.00PM  41.3  38.9  2.4

Readings of Concrete Wall

11.00

AM

12.00

PM

1.00P

M

2.00P

M

3.00P

M

4.00P

M0

4

8

12

16

CONCRETE WALLBEE WAXPARAFFIN WAX

TEM

PER

ATU

RE

DIF

FER

ENC

E(T

1-T2

)

TIME

Temperature Variation of PCM And Concrete Wall Vs. Time

Average Temperature DifferenceFor, Paraffin Wax=7.98Beewax=6.93Concrete Wall=4.9

CONCLUSION

We get the better result by using paraffin wax as compared to bee wax so we prefer to use paraffin wax in concrete block.

REFERENCES [1] Francis Agyenim, Neil Hewitt, Philip Eames,Mervyn Smyth, A review of materials, heat transfer and phase change problemformulation for latent heat thermal energy storage systems (LHTESS), Renewable and Sustainable Energy Reviews, vol.14, pp.615–628, 2010.[2] Mohammed M. Farid, Amar M. Khudhair, Siddique Ali K. Razack,Said Al-Hallaj, A review on phase change energy storage:materials and applications, Energy Conversion and Management, vol.45, pp.1597–1615, 2004.[3] M Ravikumar, PSS Srinivasan, Analysis of heat transfer across building roof with phase change material, Journal ofComputational Information Systems, vol.4, pp.1497-1505, 2012.[4] Piia Lamberg, Reijo Lehtiniemi, Anna-Maria Henell, Numerical and experimental investigation of melting and freezing processes in phase change material storage, International Journal of Thermal Sciences, vol.43, pp.277–287, 2004.[5] Y. Tian, C.Y. Zhao, Numerical investigations of heat transfer in phase change materials using non-thermal equilibrium model, 11th UK National Heat Transfer Conference, London, UK, 6-8 September, 2009.

ACKNOWLEDGEMENT

We place on record, our sincere thanks to Dr.A.W.Kolhatkar(Principal,J.D.I.E.T.,Yavatmal and Dr. A. B. Borade (H.O.D., Mech. Engg.) for permitting us to do the work on this project. Without the precious support from Prof. T.B.Kathoke And Prof. P. R. Ingole, It would not have been possible to carry through.

Thank you..