Green Phase Change Materials

Abstract

Phase change materials (PCMs) have gained increasing attention recently due to their remarkable potential to enhance energy efficiency and thermal management in various applications. Green PCMs are characterized by their low environmental impact, non-toxic nature, and sustainability. These materials encompass a range of organic and inorganic compounds, including fatty acids, eutectic mixtures, and bio-based polymers. Their phase transition properties make them ideal for storing and releasing thermal energy, thereby reducing energy consumption and greenhouse gas emissions in various sectors. This chapter delves into various types of renewable or natural PCMs, including fatty acids-based, vegetable oil-based, and bio-based wax PCMs, which are derived from organic sources. Additionally, it explores sugar alcohols as a green alternative due to their favorable phase transition properties. Other types of PCMs, such as salt hydrates and those derived from recycled materials, are also discussed for their unique advantages in thermal energy storage. Finally, the chapter further examines the challenges associated with the use of PCMs in general, including issues related to cost and material stability. By providing a comprehensive overview, this chapter underscores the importance of green PCMs in reducing energy consumption and greenhouse gas emissions.