Waste heat management is gaining significance in contemporary industrial operations due to the interconnected goals of enhancing energy efficiency and promoting environmental sustainability. The current research was conducted with the main aim of examining the usage of waste heat for a plastic plant located in Lebanon. Using the ASPEN PLUS program, the study carefully assessed three different thermal cycles, namely the Lithium Bromide Absorption (LBA), the Ammonia-Water Absorption (AWA) and the organic Rankine cycle (ORC). The results indicated that the LBA and AWA cycles demonstrated a near alignment with the desired temperature output for cooling purposes in industrial settings. However, the LBA cycle emerged as the leading option upon analyzing efficiency. Therefore, this study shows that using LBA cycle has a significant potential for effectively managing waste heat in comparable industrial environments. This approach effectively addresses the critical considerations of temperature output and efficiency, offering a well-rounded solution.