An experimental analysis of flow boiling and pressure drop in a brazed plate heat exchanger for organic Rankine cycle power systems

Abstract

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Condensation heat transfer and pressure drop characteristics of R134a, R1234ze(E), R245fa and R1233zd(E) in a plate heat exchanger

“…The results suggest that through the introduction of the Bond number and further fitting of exponent a, the MAPD and MBPD of Eqs. (35) and (36) are reduced compared with those of the correlation by Yan et al [12], especially for the working fluid…”

“…Adriano et al [36] present a detailed description on how to derive the thermal oil single-phase heat transfer correlation using the modified Briggs and Young method [31]. In this work, we employed a similar method.…”

“…(40), with 94 % of the experimental data predicted within ±25 % with a MAPD of 9.2 % and a MBPD of 0.Comparison of predictions of the proposed correlations (Eqs (35). and(36)) with experimental data for heat transfer coefficients.…”

A review of heat transfer enhancement techniques in plate heat exchangers

“…Conversely, Refs. [69,178,179] suggest nucleate boiling to be the dominant flow boiling heat transfer mechanism for all vapor qualities. Therefore, there is the need for fundamental research of single-phase and two-phase heat transfers in the PHEs, aiming to improve the basic understanding of the heat transfer mechanism.…”

Designing the dynamic response of Organic Rankine Cycle evaporators in waste heat recovery applications

“…In small scale applications, compact heat exchangers as evaporators are a preferred option [126]. The most widely researched option for compact ORC evaporators are brazed plate heat exchangers [127]- [129]. Brazed plate evaporators, however, are better suited when the hot fluid is a liquid [130] as it is the case only for indirect evaporation from IC engines exhaust.…”