Introduction to Pcm Layer

The results indicate that the best location of PCM layer is in south wall with a reduction of the auxiliary energy 30%, an increase of the solar coverage 3.

The paper presents the results of numerical analysis of complex, triple glazed window with PCM layer.

Transient conjugate heat transfer is studied using a three-dimensional model in the three parts of the microchannel which are the nanofluid flow, the solid walls of the channel, and the MEPCM layer.

The microcavity is designed so that when the PCM layer is in the low-temperature phase, the metallic nanolayer coincides with a nodal plane of the resonant electric field component, to allow a high resonant transmittance.

This work investigates experimentally the cooling performance of Al2O3/water nanofluid with 8 wt% concentration flowing through a minichannel heat sink with a MEPCM layer in its ceiling.

The novelty in investigation of the PCM glazing components will be introduced by taking into account as the main the following aspects – investigation of heat exchange processes in the PCM layer during energy storage and heat exchange by convection and radiation as well as determination of real performance of PCM glazing components under different weather conditions and, of course, practical construction solution of components including their movability.

That is to lay a layer of PCM outside the common roof, then a layer of high reflectivity film was laid outside the PCM layer.

The envelope construction properties of the two rooms were the same except the PCM room had double SSPCM layers on south wall.

Roof integrated with shape-stabilized phase change material (SSPCM) is composed of the PCM layer and the precast concrete hollow slab, the PCM layer is placed on the outer layer of which.

Analytical and numerical heat transfer analyses show that the hybrid thermal insulation system can be designed with proper thickness of the Aerogel and PCM layer for heat loss prevention and cool down time extension during a flow line shut-in operation.

The corresponding optimisation problem involves scheduling an HVAC system while considering the PCM layer as an energy storage system.

In this work, transient thermal characteristics of pure water or Al2O3/water nanofluid with 2–8 wt% concentrations as coolant flowing through a minichannel heat sink with MEPCM layer in its ceiling are experimentally investigated.

In present work, a simplified calculation method is developed to analyze its thermal performance, which considers the convective heat transfer of air layer and the radiative heat transfer of PCM layer.

The experimental results suggest that the shear strengthening effect of the CFRP grid-PCM layer for RC beams is obvious and adequate.

The comparison between temperature distributions of a simple brick wall and a brick wall with a PCM layer is presented.

26% while for a given volume of PCM, energy efficiency increased with the increase in the surface area and decrease in the thickness of PCM layer.

Further, the influence of two design parameter including pipe spacing and thickness of PCM layer are studied and analyzed simultaneously.

Phase one evaluated the physical properties and corrosion resistance of the HPCM layer and compared the recorded results with those of conventional concrete.

For constant volume, the influence of different thicknesses and surface area on energy savings was evaluated and it was found that energy savings increased with the increase in surface area and decrease in thickness of PCM layer.

Results confirmed that the strong non-linearity of the PCMs’ behaviour and of the weather boundary condition deeply affect the thermal performance of the building, being the main reason for this effect an increase of the thermal capacity of the PCM layer and the external temperature.

The novelty of this work is based on the investigation of different scenarios about the position of the PCM layer in the south and the north walls.

Finally, it was observed that for orientations east and south, the PCM layer does not change its phase and it remains in the mushy zone.

In comparison with the building without MEPCM layer, the binary MEPCM drywall did reduce the peak indoor air temperature by 2.

On the other hand, experimental tests show how the inclusion of a PCM layer with melting point around 25 °C and 31 °C under the cool and dark coating membrane, respectively, allows the best thermal performance in both climate conditions.

Thermal performance of the PCMs are assessed by comparison to a reference case identical to the PCM house but without the PCM layer.

The PCM layer is situated below the underfloor heating system in order to increase the storage capacity.