Stainless steel finned tube heat exchanger design for waste heat recovery

Wipplinger, K. P. M.; Harms, Thomas; Taylor, A. B.

doi:10.17159/2413-3051/2006/v17i2a3281

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…number of fins depends on operational/design requirement [5]. The design procedure for ASHEFT is similar to a 'Finned Tube Heat Exchanger' (FTHE) [14]. In case of FTHE, the effective flow area is a rectangle.…”

Section: Details Of Sub-components and Materials For Fabricationmentioning

confidence: 99%

An Apparatus for Exchanging Heat with Flow in an Annulus

Jagtap¹

2017

JESTR

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Present day heat exchangers might not effectively exchange heat with hot or cold fluid flowing through a constrained operational space, such as an annulus. For maximum heat recovery in gas turbine engines, a heat exchanger needs to be placed immediately after the exhaust turbine in the annulus of engine's exhaust system. In case of heat recovery in the family of shaft-powered aircraft engines, any additional component to the aircraft needs to be compact and should weigh less. An innovative design of a compact heat exchanger is presented in this paper. This heat exchanger is specifically designed to be used in applications (including gas turbine engines), where the hot or cold fluid (which act as a heat source or sink relative to the working fluid flowing through the heat exchanger), flows through an annulus. This paper, at a conceptual design phase, presents the construction, orientation for best efficiencies, solution to manufacture the complex geometry of the heat exchanger, and the materials that can be used in its fabrication.

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Section: Details Of Sub-components and Materials For Fabricationmentioning

confidence: 99%

An Apparatus for Exchanging Heat with Flow in an Annulus

Jagtap¹

2017

JESTR

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“…Different methods have been recommended for waste heat recovery from ICE; such as thermoelectric, absorption refrigeration system, and organic Rankine cycle (ORC). Many researchers have been performed about using different working fluids, different configurations of Rankine cycle, and improving the system components during the recent years [10][11][12][13][14][15][16]. Waste heat recovery using ORC is an efficient method compared with the other techniques; so automobile manufacturers use this method to enhance the efficiency of their products [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A comprehensive study on waste heat recovery from internal combustion engines using organic Rankine cycle

2013

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There are a substantial amount of waste heat through exhaust gas and coolant of an Internal Combustion Engine. Organic Rankine cycle is one of the opportunities in Internal Combustion Engines waste heat recovery. In this study, two different configurations of Organic Rankine cycle with the capability of simultaneous waste heat recovery from exhaust gas and coolant of a 12L diesel engine were introduced: Preheat configuration and Two-stage. First, a parametric optimization process was performed for both configurations considering R-134a, R-123, and R-245fa as the cycle working fluids. The main objective in optimization process was maximization of the power generation and cycle thermal efficiency. Expander inlet pressure and preheating temperature were selected as design parameters. Finally, parameters like hybrid generated power and reduction of fuel consumption were studied for both configurations in different engine speeds and full engine load. It was observed that using R-123 as the working fluid, the best performance in both configurations was obtained and as a result the 11.73% and 13.56% reduction in fuel consumption for both preheat and Two-stage configurations were found respectively

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