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

Abstract

The present study investigates exergy analysis of optimal designed spiral plate heat exchangers (SPHEs) based on energy criteria. A new design algorithm is developed to obtain a higher overall heat transfer coefficient and more compact SPHE by (1) maintaining the geometric aspect ratio (GAR), (2) enhancing channel pressure drops, and (3) minimizing the total costs. Mathematical modeling of spiral turns of designed SPHEs as a hypothetical network of heat exchangers (HEs), and implementation of energy balance

Experimental Research on a New Mini-Channel Transcritical CO2 Heat Pump Gas Cooler

“…Multiple correlations were used on the CO 2 side for comparison, including Mcadams, Inagaki, Morimoto, Zhang, and Minton, as shown in Table 3 [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. The traditional flow resistance calculation method for a spiral plate heat exchanger is mainly based on the Sauder equation, which was derived experimentally to calculate pressure loss.…”

“…Bes and Roetzel [ 12 , 13 , 14 ] analyzed the thermal performance of a spiral heat exchanger and developed an analytical method to evaluate fluid temperature variation in a countercurrent spiral heat transfer. Shirazi et al [ 15 ] developed a new algorithm for spiral plate heat exchangers; the algorithm was optimized in terms of geometric aspect ratio, pressure drop, and total cost. The relative heat rate capacity per volume of the newly designed spiral plate heat exchanger reached up to 54%, compared to other designs.…”

Análise de trocador de calor de placas em espiral usado para resfriar óleo vegetal com nanofluido composto por água e nanopartículas não esféricas de alumina boemita

“…𝜂𝜂 𝑁𝑁 and 𝜀𝜀 𝑁𝑁 are thermal efficiency and thermal effectiveness, respectively (Bejan, 1987;Fakheri, 2007). ∆𝑃𝑃 𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛 and ∆𝑃𝑃 ℎ are the pressure drops in the cold and hot fluids in the Pascal, respectively (Núñez et al, 2007;Shirazi et al, 2022). 𝐵𝐵𝑒𝑒 is the Bejan number (Bejan, 1987;Fakheri, 2007;Ashrafizadeh, 2019).…”

“…The results for heat transfer coefficients, number of thermal units (NUT), thermal efficiency, thermal effectiveness, thermal and viscous irreversibilities, hot fluid outlet temperature, and Bejan number are obtained and presented graphically through thermo-hydrodynamic performance analysis. Shirazi et al (2022) present an exegetical analysis of spiral plate heat exchangers (S.P.H.E.s) using an algorithm that makes it possible to obtain a more compact and efficient S.P.H.E. Mathematical Modeling numbers based on dimensionless energy, in addition to thermal efficiency and temperature difference number and modified.…”

Analysis of spiral plate heat exchanger used to cool vegetable oil with nanofluid consisting of water and non-spherical boehmite alumina nanoparticles

“…The results for heat transfer coefficients, number of thermal units (NUT), thermal efficiency, thermal effectiveness, thermal and viscous irreversibilities, hot fluid outlet temperature, and Bejan number are obtained and presented graphically through thermo-hydrodynamic performance analysis. Shirazi et al [1] present an exegetical analysis of spiral plate heat exchangers (SPHEs) using an algorithm that makes it possible to obtain a more compact and efficient SPHE Mathematical Modeling numbers based on dimensionless energy, in addition to thermal efficiency and temperature difference number and modified. These dimensionless numbers allow the evaluation of exergy in channels.…”