scholarly journals PCM Heat Storage Charged with a Double-Reflector Solar System

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Amos Veremachi ◽  
Boaventura Chongo Cuamba ◽  
Azher Zia ◽  
Jorgen Lovseth ◽  
Ole Jorgen Nydal
Keyword(s):  
Solar System ◽  
Heat Storage ◽  
Focal Point ◽  
Small Scale ◽  
The Sun ◽  
Latent Heat Storage ◽  
Solar Salt ◽  
Sunshine Hours ◽  
Direct Illumination ◽  
Change Material

A “Solar Salt” (NaNO3–KNO3 60 : 40 molar mixture) latent heat storage has been charged by direct solar illumination. Solar Salt as a Phase Change Material (PCM) can be an attractive small scale heat storage solution, as the melting temperature of about 220°C can be suitable for cooking purposes. The tests were made with a double-reflector setup. In this setup a secondary reflector positioned above the focal point of the primary reflector directs the rays onto a heat storage positioned below a hole in the primary reflector. The reflectors are tracking the sun, but the storage is stationary. The direct illumination of the absorber top plate during the tracking of the sun melted the salt in the storage through conducting fins. This is a system where portable heat batteries can be charged, during sunshine hours, and then provide heat for cooking during evening times.

Experimental Study on Solar Cooker Using Phase Change Materials

2015 ◽  
Vol 766-767 ◽  
pp. 463-467
Author(s):  
B. Kanimozhi ◽  
Kumar Sanandharya ◽  
Sumit Anand ◽  
Sandeep Kumar
Keyword(s):  
Solar Energy ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Coconut Oil ◽  
Latent Heat Storage ◽  
Fuel Gas ◽  
Commercial Grade ◽  
Sunshine Hours ◽  
Change Material

The main objective of our project is to conserve the available solar energy and improve its utilization with the help of phase change material; here we have absorbed solar energy to prepare food especially for cooking rice, boiling potatoes and eggs. The use of PCM in the solar cooker has improved its efficiency over conventional solar cooker and cooking food hot in off sunshine hours. It is being eco-friendly and other than that it save fuel, gas, coal which are exhaustible source of energy. In the present article some of different phase change materials are studied for solar cooking and among them Coconut Oil (commercial grade) is found to be a good latent heat storage which is experimentally tested in a simple box type solar cooker and the comparison is made with and without PCM.Key word: solar cooker, coconut oil, concentrating lens, phase change materials.

Latent heat storage for hot beverages

2019 ◽  
Vol 13 (3) ◽  
pp. 5653-5664
Author(s):  
M. S. M. Al-Jethelah ◽  
H. S. Dheyab ◽  
S. Khudhayer ◽  
T. K. Ibrahim ◽  
A. T. Al-Sammarraie
Keyword(s):  
Latent Heat ◽  
Food Industry ◽  
Heat Storage ◽  
Food Storage ◽  
Thermal Engineering ◽  
Engineering Applications ◽  
Latent Heat Storage ◽  
The Impact ◽  
Encapsulated Phase Change Material ◽  
Change Material

Latent heat storage has shown a great potential in many engineering applications. The utilization of latent heat storage has been extended from small scales to large scales of thermal engineering applications. In food industry, latent heat has been applied in food storage. Another potential application of latent heat storage is to maintain hot beverages at a reasonable drinking temperature for longer periods. In the present work, a numerical calculation was performed to investigate the impact of utilizing encapsulated phase change material PCM on the temperature of hot beverage. The PCM was encapsulated in rings inside the cup. The results showed that the encapsulated PCM reduced the coffee temperature to an acceptable temperature in shorter time. In addition, the PCM maintained the hot beverage temperature at an acceptable drinking temperature for rational time.

Thermal Properties Analysis of Several N-Alkanes Eutectic Mixtures Applied in Building Envelopes

2012 ◽  
Vol 512-515 ◽  
pp. 3007-3010
Author(s):  
Jing Yu Huang ◽  
Shi Lei Lv ◽  
Chen Xi Zhang ◽  
Zhi Wei Wang
Keyword(s):  
Thermal Properties ◽  
Melting Temperature ◽  
Latent Heat ◽  
Heat Storage ◽  
Eutectic Mixture ◽  
Scanning Calorimetry ◽  
Latent Heat Storage ◽  
Building Envelopes ◽  
Eutectic Mixtures ◽  
Change Material

This study focuses on the preparation, thermal properties of alkanes eutectic mixtures (n-Octadecane/n-Eicosane, n-Octadecane/n-Docosane and n-Heptadecane /n-Eicosane) as candidate phase change material (PCM) for low temperature latent heat storage systems in building envelopes. Their melting temperature and latent heat were tested by Differential scanning calorimetry (DSC). The testing values were closed to calculation values of accepted theory that ensured the reliability of those datas. The results indicated n-Octadecane/n-Docosane eutectic mixture was more promising PCM for buildings in terms of melting temperature (25.3°C) and latent heat values of melting (158.2J/g).

Sign in / Sign up

Export Citation Format

Share Document