Numerical Analysis of the Thermal Properties of Beeswax Based Phase Change Materials for Thermal Energy Storage Applications in Comparison to Paraffin: Highlights: Exploration of the Application of Beeswax as a Sustainable Substitute for Paraffin wax in Thermal Energy Storage. Comparison of Heat Flux and Temperature Rise of Beeswax and Paraffin Better Temperature Control with the Beeswax was Noticed in PCM. Heat Flux for Parafin Wax and Beewax Based PCMs are Almost Same.