Analysis of Solar Thermal Energy Integration in the Industry in Indonesia

This study focuses on designing a solar thermal system utilizing parabolic trough collectors to replace conventional heat requirements in industrial processes. The research also assesses the impact of implementing this system on reducing CO₂ emissions and provides economic analysis for industrial cities from two geographically different islands in Indonesia: Java and Sulawesi. This study uses a parabolic trough collector to absorb energy from sunlight. Based on the calculation of the energy balance of the solar collector, the average heat absorbed by the collector is 545.5 kJ m⁻² h⁻¹ in Java and 606.5 kJ m⁻² h⁻¹ in Sulawesi. As a result, approximately 67.55 tonnes of CO₂ per day will be mitigated by transitioning from conventional processes. The economic analysis indicates a payback period of 3.54 years, a net present value of 1.4 million USD, and an internal rate of return of 12 % based on fuel savings.