Heat transfer in the coolant channel of a heat-exchanger system based on fluctuation theories

Journal Article · Tue Nov 01 00:00:00 EST 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.4822· OSTI ID:6721138

Diaz-Guilera, A; Rodriguez, M A; Rubi, J M

We present a model to study the heat transfer in the coolant channel of a heat-exchanger system. Such a model introduces thermal fluctuations as well as external noises due to different mechanisms of heat interchange. A unified treatment of both kinds of noise is carried out. The stationary mean value of the channel temperature is studied, obtaining effective transport coefficients which affect the stability of the system. The effects of the different noises are visualized in a correlation length obtained from the temperature correlation function. The model has practical implications in the field of nuclear-reactor noise theory.

• Research Organization: Departament de Fisica, Divisio Fisica Estadistica, Universitat Auto-grave-accentnoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
• OSTI ID: 6721138
• Journal Information: Phys. Rev. A; (United States), Vol. 38:9
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
HEAT EXCHANGERS
HEAT TRANSFER
FLOW MODELS
FLUCTUATIONS
FLUID FLOW
ONE-DIMENSIONAL CALCULATIONS
TEMPERATURE NOISE
WORKING FLUIDS
ENERGY TRANSFER
FLUIDS
MATHEMATICAL MODELS
NOISE
VARIATIONS
420400* - Engineering- Heat Transfer & Fluid Flow