Thermodynamic investigation of a diffusion absorption refrigeration system with an isobutane–dimethylformamide–helium working fluid blend

Diffusion absorption refrigeration (DAR) is a promising cycle concerning renewable energy utilization, as the cycle can operate using only thermal energy input. However, to realize the benefits of the DAR cycle, there is a need to develop an improved understanding of how design parameters influence its performance. The cycle’s performance was particularly sensitive to several factors: the rate of heat added and the temperature of the generator, the effectiveness of the gas and solution heat exch