Performance Evaluation Criteria for Heat Exchangers Based on First Law Analysis

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

“…Moreover, for a feasible heat transfer augmentation solution, the PEC must be sufficiently larger than 1. An exhaustive review of the performance enhancement criterion, as an effective tool for measuring heat and fluid flow characteristics, was provided by Yilmaz et al [34]. The PEC has also been indexed in several heat transfer applications [35][36][37][38].…”

Energy and exergy analysis of spiral turns in optimum design spiral plate heat exchangers

“…The operating cost of HEs depends on required pumping power, related to yearly pump work hours, energy cost, HE lifetime, and annual interest rate. 58 Equation (23) shows the cost of pumping streams during the lifetime of the SPHE with considering the following values in this study: energy cost = 0.15 USD/(kW•hr), pump efficiency = 0.75, pump work hours per year = 8000 h, annual interest rate = 0.1, and lifetime years = 15 years.…”

“…[20][21][22] Although performance evaluation based on the first thermodynamics law, especially thermal effectiveness, and NTU method, was common among HE researchers, calculating performance in terms of the second thermodynamics law opened new horizons by reason of thermal system irreversibility. 23,24 Accordingly, performance and irreversibility analysis in HEs can be fallen into three categories: (I) entropy generation methods, [25][26][27] (II) exergy methods, 26,[28][29][30][31] and (III) entransy methods. [32][33][34][35] Although these methods were welldeveloped in HEs, few researchers had a tendency to conduct thorough research on SPHEs.…”

The hybrid method for the plate-finned tube evaporator design process

“…The method uses a discretization procedure of the HX whole geometry and for every elementary volume performs a routine on both refrigerant and air side in order to obtain heat transfer parameters through a regression technique. Several Performance Evaluation Criteria (PEC) have been developed in order to evaluate the performance of heat exchangers: they can be categorized as criteria based on the first law of thermodynamics [14] and criteria based on the second law of thermodynamics [15]. Furthermore, criteria used for heat exchangers operating with single-phase fluids are not suitable for application in two-phase heat exchangers [16].…”