2018
DOI: 10.3390/app9010072
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A Fast Prediction Model for Heat Transfer of Hot-Wall Heat Exchanger Based on Analytical Solution

Abstract: The hot-wall heat exchanger (HWHE) has been widely used in thermal engineering fields such as ceiling radiant heating/cooling, refrigerator condenser, solar heat collection, and high-temperature heat recovery. However, the numerical simulation normally used for heat transfer prediction in HWHE is usually not as convenient as the analytic solutions in engineering applications. In this paper, a new heat transfer mathematical model of HWHE-based on analytic solutions was developed, which could be much faster to o… Show more

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Cited by 5 publications
(5 citation statements)
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“…The method used is mathematical modelling with the help of MATLAB software. The results of this study indicate that the thickness of a material affects heat transfer [16].…”
Section: Introductionmentioning
confidence: 76%
“…The method used is mathematical modelling with the help of MATLAB software. The results of this study indicate that the thickness of a material affects heat transfer [16].…”
Section: Introductionmentioning
confidence: 76%
“…where ( 9) is for i = d 1 + 1, ⋯, d 2 and ( 10) is for i = 2, ⋯, d 1 . The total amount of fuel and combustion air mixture exiting the burner: (14) where Q fuel is the fuel amount (m 3 /s), Q air is the combustion air amount (m 3 /s), Q air_min is the combustion air minimal amount (m 3 /s), β is the excess air. The excess air β is set in the range 1 -1.1 (i.e., the optimal value for natural gas combustion).…”
Section: Modeling Of Flue Gas Flowsmentioning
confidence: 99%
“…Subsequently, new formulations of direct exchange areas and indirect exchange areas have been proposed, which allow the computation of the exchange areas of complex elements like unstructured meshes and solving a nonstationary heat transfer problem. Hu et al [14] describe a new heat transfer mathematical model of the hot-wall heat exchanger based on analytic solutions. The proposed model includes equations of the heat transfer by conduction and convection, which were adjusted for solving the problem.…”
Section: Introductionmentioning
confidence: 99%
“…Since the external wall system plays a significant rile in energy conservation and deal with the aggressive local environment [10,11]. The external envelope of the building, that is the walls, doors, windows and ceiling, play an important role in managing the building's energy demand by managing and minimising heat transference from the external atmosphere to the internal [12,13].…”
Section: ) Building Mass and Designmentioning
confidence: 99%