Modeling on the fluid temperature distribution of a spiral heat exchanger

Abstract

In this paper, a model of a spiral heat exchanger is shown. The spiral heat exchanger is composed of two parts, the hot fluid and the cold fluid. The nonlinear model is derived by investigating a small volume of the spiral heat exchanger. Moreover, the proposed model is more accurate compared with the previous model. Finally, the effectiveness of the modeling method is shown by simulation results.

Heat transfer enhancement using hybrid nanofluids in spiral plate heat exchangers

“…The thermophysical characteristic values of different nanoparticles and base fluid (water) is shown in Table 2. Equations (15)(16)(17) are applied for estimating the overall volume fraction, mass density and specific heat of the hybrid nanofluids. The subscripts bf, np, and hnf denote the base fluid, nanoparticles, and hybrid nanofluid, correspondingly.…”

“…Thirumarimurugan et al experimentally calculated effectiveness and overall heat transfer coefficients of SPHE. Later several researchers assessed the performance of SPHE by investigating the effects of flow rate, pressure drop, coil diameter, and spiral length …”

“…Later several researchers assessed the performance of SPHE by investigating the effects of flow rate, pressure drop, coil diameter, and spiral length. [14][15][16][17] With the advent of nanofluids in heat transfer applications, many researchers analyzed SPHE both numerically and experimentally using nanofluids as working medium and found improved thermal performance. [18][19][20][21][22][23][24][25][26][27][28] The reason for the enhancement in the thermal performance can be attributed to nanoparticles thermal conductivity and volume fractions.…”