RT Journal Article
T1 ε-NTU relationships in parallel-series arrangements: Application to plate and tubular heat exchangers
A1 Fernández Torrijos, María
A1 Almendros Ibáñez, José Antonio
A1 Sobrino Fernández, Celia
A1 Santana Santana, Domingo José
AB The ε-NTU method has advantages over other methods because it does not require assumption of an outlet temperature to determine the duty of a heat exchanger. In this work, the ε-NTU method was used to obtain a general algebraic expression of the effectiveness of PHEs in the N-Pa pass-1 pass configuration as a function of the heat capacity ratio (C*) and the number of transfer units (NTU). This expression is valid for PHEs with a high number of plates (N-p > 40). In addition, 1 pass-1 pass and 2 pass-1 pass PHEs were numerically analyzed to obtain an algebraic expression of the effectiveness of PHEs with a low number of thermal plates (N-P < 40) as a function of C*, NTU and the number of plates. Finally, the expression obtained for N-pa pass-1 pass PHEs with a high number of plates was generalized for use in any heat exchanger with series-parallel configurations, such as series-parallel arrangements of double-pipe or shell-and-tube heat exchangers.
PB Elsevier
SN 1359-4311
YR 2016
FD 2016-04-25
LK https://hdl.handle.net/10016/31524
UL https://hdl.handle.net/10016/31524
LA eng
DS e-Archivo
RD 3 jun. 2024