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Recommended Papers for: latent heat

Total Papers Found: 11

Nano-Phase Change Materials for Electronics Cooling Applications

Passive cooling is a method of dissipating heat rejected by electronic devices, and when associated to a phase change can be very effective. Phase change materials (PCMs) are widely used for thermal storage applications due to their ability to store and release large amounts of energy. Paraffin waxes also exhibit desirable characteristics, such as high latent heat and low thermal conductivity. This article looks at four nano-PCMs, obtained by seeding ...

Author(s): , , , , ,

Shape-stabilized phase change materials based on fatty acid eutectics/expanded graphite composites for thermal storage 

HVAC systems have become very popular, but require a lot of thermal storage. One way to provide this storage is through phase change materials (PCM). This report investigates using expanded graphite to improve the thermal conductivity of a capric, lauric and oleic acid mixture PCM. It was found that with the increase in mass fraction of expanded graphite the thermal conductivity of the PCM also increases....

Author(s): , , , , , , , , ,

Thermal characterization of nitrates and nitrates/expanded graphite mixture phase change materials for solar energy storage 

Nitrate materials play an important role in the development of latent thermal energy storage (LTES) systems. This paper examined the thermo-physical properties of sodium nitrate, potassium nitrate and their mixtures with expanded graphite (EG) additives for their applications in solar energy storage. The transient hot-wire method measured the apparent thermal conductivities of the nitrates and nitrates/EG mixtures. Results showed that nitrates/EG mixture PCMs with the highest concentrations of ...

Author(s): , ,

Preparation and thermal characterization of paraffin/metal foam composite phase change material 

Paraffin is an excellent phase change material (PCM) for latent heat storage, but it does not efficiently use stored energy because of its low thermal conductivity. In this study, nickel and copper foams were added to paraffin to enhance heat transfer. A Thermal Constants Analyzer measured the thermal conductivity of the paraffin composites using the transient plane source (TPS) method. The addition of copper foam enhanced the thermal conductivity of ...

Author(s): , ,

Preparation and thermal performance of gypsum boards incorporated with microencapsulated phase change materials for thermal regulation 

Phase change materials (PCMs) store large amounts of latent heat over small temperature ranges, so their application in the thermal regulation of buildings is becoming more popular. However, PCMs have low thermal conductivities, so micro-encapsulated PCMs (micro-PCMs) are being incorporated into PCMs to enhance their performance and improve thermal conductivity. In this study, micro-PCMs were mixed with thermally conductive, inorganic gypsum powder and glass fiber to produce gypsum boards. The ...

Author(s): , , , , , , ,