http://wrap.warwick.ac.uk/44841/1/WRAP_Tian_Review%20on%20thermal%20energy%20storage%20with%20phase%20change.pdf

Review on thermal energy storage with phase change materials (PCMs) in building applications

Concentrated solar thermal power generation is becoming a very attractive renewable energy production system among all the different renewable options, as it has have a better potential for dispatchability. This dispatchability is inevitably linked with an efficient and cost-effective thermal storage system. Thus, of all components, thermal storage is a key one. However, it is also one of the less developed. Only a few plants in the world have tested high temperature thermal energy storage systems. In this paper, the different storage concepts are reviewed and classified. All materials considered in literature or plants are listed. And finally, modellization of such systems is reviewed.

State of the art on high temperature thermal energy storage for power generation. Part 1—Concepts, materials and modellization

Phase change materials for thermal energy storage

Cooling the cities – A review of reflective and green roof mitigation technologies to fight heat island and improve comfort in urban environments

The present paper is the first comprehensive review of the integration of phase change materials in building walls. Many considerations are discussed in this paper including physical considerations about building envelope and phase change material, phase change material integration and thermophysical property measurements and various experimental and numerical studies concerning the integration. Even if the integrated phase change material have a good potential for reducing energy demand, further investigations are needed to really assess their use.

/pdf/a-review-on-phase-change-materials-integrated-in-building-2uggcbgrkr.pdf

A review on phase change materials integrated in building walls

Use of microencapsulated PCM in concrete walls for energy savings

Thermal energy storage by latent heat allows storing high amounts of energy working in narrow margins of
temperature. The use of phase change material (PCM) for the latent heat storage has been studied in different
applications and it has been commercialized in containers to transport blood, products sensible to temperature, to
decrease their energy demand. The use of PCM in cooling and refrigeration has been attracting a lot of interest lately,
but for all applications, the properties of these materials need to be known with sufficient accuracy. Regarding heat
storage, it is necessary to know the enthalpy as a function of temperature. The most widely used calorimeter is the heatflux
differential scanning calorimetry (hf-DSC). The objective of this study is to investigate different methods for hf-
DSC analysis, namely the dynamic method and the step method, and to test their accuracy in the determination of
enthalpy–temperature relationship of PCM. For the dynamic method, a strong influence of heating/cooling rate was
observed. For the step method, the resulting enthalpy–temperature relationship is independent of heating/cooling rate.
Commercial PCM RT27 was chosen as sample material to avoid subcooling and kinetic effects in the test
measurements. The approach introduced in this study can be used to carry out similar investigations for other classes of
PCM and/or other DSC instruments.

Determination of the enthalpy of PCM as a function of temperature using a heat-flux DSC—A study of different measurement procedures and their accuracy

Effect of microencapsulated phase change material in sandwich panels

Use of microencapsulated PCM in buildings and the effect of adding awnings

The main objective of this paper is to demonstrate experimentally that it is possible to improve the thermal comfort and reduce the energy consumption of a building without substantial increase in the weight of the construction materials with the inclusion of phase change materials (PCM). PCM are a suitable and promising technology for this application. This paper presents an experimental setup to test PCM with various typical insulation and construction materials in real conditions in Puigverd de Lleida (Lleida, Spain). Nine small house-sized cubicles were constructed: two with concrete, five with conventional brick, and two with alveolar brick. PCM was added in one cubicle of each typology. For each type of construction specific experiments were done. In all cubicles, free-floating temperature experiments were performed to determine the benefits of using PCM. A Trombe wall was added in both concrete cubicles and its influence was investigated. All brick cubicles were equipped with domestic heat pumps as Heating, Ventilation, and Air Conditioning (HVAC) system; therefore, the energy consumption was registered, providing real information about the energy savings. Results were very good for the concrete cubicles, since temperature oscillation were reduced by up to 4°C through the use of PCM and also peak temperatures in the PCM cubicle were shifted in later hours. In the brick cubicles, the energy consumption of the HVAC system in summer was reduced by using PCM for set points higher than 20°C. During winter an insulation effect of the PCM is observed, keeping the temperatures of the cubicles warmer, especially during the cold hours of the day.

Cecilia Castellón

Papers

Use of microencapsulated PCM in concrete walls for energy savings

Determination of the enthalpy of PCM as a function of temperature using a heat-flux DSC—A study of different measurement procedures and their accuracy

Effect of microencapsulated phase change material in sandwich panels

Use of microencapsulated PCM in buildings and the effect of adding awnings

Experimental Study of PCM Inclusion in Different Building Envelopes