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Table 3 Specific heat of KNO3 and the nanofluids obtained with 1.0 wt.% of different nanoparticles

From: A New Phase Change Material Based on Potassium Nitrate with Silica and Alumina Nanoparticles for Thermal Energy Storage

 

KNO3

KNO3 + SiO2

KNO3 + Al2O3

KNO3 + SiO2-Al2O3

C p (J/g °C)

C p (J/g °C)

C p (J/g °C)

C p (J/g °C)

Solid

Liquid

Solid

Liquid

Solid

Liquid

Solid

Liquid

First run

1.169

1.196

1.294

1.281

0.996

1.123

1.369

1.386

Second run

1.197

1.205

1.298

1.286

1.194

1.185

1.385

1.390

Third run

1.199

1.210

1.307

1.287

1.206

1.182

1.396

1.363

Fourth run

1.173

1.198

1.290

1.267

1.150

1.114

1.347

1.306

Fifth run

1.121

1.136

1.263

1.240

1.120

1.082

1.283

1.256

Sixth run

1.118

1.134

1.224

1.203

1.068

1.043

1.171

1.095

Enhancement (%)

9.5

6.1

−4.5

−7.8

4.7

−3.4

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