Conceptual design, modelling and optimization of an integrated system by combining Organic Rankine Cycle and absorption refrigeration cycle for efficient energy recovery

Comprehensive Assessment of a Coupled LiBr/H2O Absorption Refrigeration/ORC System for Low-Grade Residual Heat Recovery Based on Advanced Exergy and Exergoeconomic Analysis

“…33 ELECNRTL is selected for the LiBr/H 2 O refrigeration cycle. For detailed steps of the simulation, please refer to ref 48. The results in Table 1 and 2 show the deviations between the two models and the existing literature, 34,35 which is less than 5%, and prove the emulation veracity.…”

“…The LiBr/H 2 O absorption refrigeration/ORC system was derived from our previous work 48 based on the work in refs 6 and 14. R123 is applied as the organic 48 The whole system is shown in Figure 1: 6,13,48 in the ORC, R123 is heated in evaporator 1 (R1) after pressurization; then, the R123 vapor (R2) flows into turbine and expands to generate power. Subsequently, the exhaust steam (R3) flows into condenser 1 for heat transfer and is turned into saturated liquid.…”

“…Table 6. Exergy Equations of the System 37,48 components exergy balance equations The corresponding energy balance equations of these two models are listed in Table 5 to facilitate the subsequent study of the system based on refs13, 14, and 48.…”

“…The LiBr/H 2 O absorption refrigeration/ORC system was derived from our previous work based on the work in refs and . R123 is applied as the organic working medium of the cascade LiBr/H 2 O and ORC waste heat recovery system.…”

“…It is assumed that the heat source temperature is 90–150 °C, and the heat capacity is 60 MW. The low-grade residual heat source is separated into two parts by the segment temperature ( T S2 ), in which the high-temperature part drives the ORC and the low-temperature part heats LiBr/H 2 O absorption refrigeration, which is set to produce cold capacity and reduce the ORC condensation temperature increase the electricity generation …”