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In this paper, the Ranque-Hilsch vortex tube aided vapor compression cooling (RHVTC) system and single vapor compression cooling system were designed and evaluated by using energy, exergy, and economic analysis. The cooling systems were designed for three different evaporator temperature and different compressor discharge pressures which were available for refrigerants. The highest value of net present value of Ranque-Hilsch vortex tube system was calculated as 35836 €. The helical vortex generator of J-type, 1 st Ranque-Hilsch vortex tube body, control valve angle of 30°, 2 nd control valve opening position, R-143a were used in this Ranque-Hilsch vortex tube system and the operating conditions of this system were T1 of 277.15 K, P2 of 1700 kPa, and P8 of 601.325 kPa. For the same system, the COP was calculated as 0.0347 and 0.0409 while exergy efficiency was calculated as 0.0097 and 0.0079 for the summer and winter modes, respectively.

In this study, the Ranque–Hilsch vortex tube (RHVT)‐aided hybrid cooling and drying system (RHVTHCD), nonhybrid cooling and drying system (NCDS), and RHVT‐aided hybrid cooling and drying system in which used the input stream of RHVT is obtained from the different system as a waste (RHVTHCDW) were investigated using energy and exergy analysis. In this aim, many systems were designed and evaluated with net present value (NPV) in the viewpoint of life cycle cost (LCC). Additionally, several RHVTs with the 9 different helical vortex generators, 3 different control valve angle (α = 30°, 45°, and 60°), 3 different vortex tube body (480, 350, and 210 mm), 5 different opening position of the control valve, and 5 different inlet flow pressure of RHVT (201.325–601.325 kPa) were performed experimentally. The cold outlet flow of RHVT was integrated to the vapor compression system with a heat exchanger, where the hot one was integrated in the drying system. The energy and exergy efficiencies of RHVTHCD system increase with the increase of the evaporator temperature. The maximum NPV value of the RHVTHCD system obtained was 37256.63 €. The highest energy and exergy efficiencies were calculated as 24.74% and 9.69%, respectively. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1808–1828, 2018

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