Study on the low temperature thermal cycle with amine solution and CO₂

Abstract

Since unused low-temperature waste heat at 150°C or below is large, effective utilization of low-temperature unutilized waste heat in the future is expected from the viewpoint of energy saving and CO₂ emission reduction. There are Organic Rankine cycle and Karina cycle as a power generation thermal cycle using low-temperature heat. However, these cycles have problems in terms of environmental aspects and safety. Therefore, we propose a thermal cycle using amine aqueous solution and CO₂. The gas component generated in this cycle consists of water vapor and CO₂, which has merit in terms of environmental aspects and safety. In this report, we mention the investigated result of the performance of low temperature thermal cycle using amine aqueous solution and CO₂, and show the experimental results of the cycle demonstration.