Investigating the thermal properties of Hyparrhenia Rufa (giant thatch grass)

Abstract

Hypearrhenia rufa also called giant thatching grass, is a traditional roofing material made from dry vegetation and has been used for centuries across various cultures and geographical regions. Despite its widespread historical use, there is a notable gap in scientific understanding regarding its thermal properties. This study aims to investigate the thermal properties of Hypearrhenia rufa, including its insulation capabilities, thermal conductivity, and resistance to heat transfer. The study involves collecting and preparing samples of giant thatch grass for experimental testing, analyzing the data to determine the factors influencing its thermal performance, and drawing conclusions regarding its suitability for modern insulation. The thermal properties of this plant species were evaluated using differential scanning calorimetry analysis. The results showed that Hypearrhenia rufa has a very low thermal conductivity of 0.0462 W/m.k and thermally stable, making it suitable for use in various industrial and agricultural applications. This property is highly desirable in an insulation material as it helps to regulate temperature and reduce energy costs. Also, the plant exhibits high thermal resistance of 5.411 K/W.  Furthermore, the thermal behavior of the plant was found to be influenced by its chemical composition, particularly its cellulose and lignin content. The findings of this study provided valuable insights into the potential use of Hyparrhenia Rufa as an insulating material in various industries. With its abundance in many African countries, this grass has the potential to be a sustainable and cost-effective solution for insulation purposes. The insights from this research can contribute to the development of more environmentally friendly and efficient insulation materials.