Integration of a wood pellet burner and a Stirling engine to produce residential heat and power

Cardozo, Evelyn; Erlich, Catharina; Malmquist, Anders; Alejo, Lucio

doi:10.1016/j.applthermaleng.2014.08.024

Cited by 53 publications

(39 citation statements)

References 21 publications

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“…a) Schematic set-up of the Stirling engine integrated with a combustion chamber and a boiler [27]. b) Temperature measurement points for the working gas in the Stirling engine T2: hot side; T10: cold side; T11, T12: hot and cold side of the regenerator [24].…”

Section: Workinggasmentioning

confidence: 99%

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Development and validation of a thermodynamic model for the performance analysis of a gamma Stirling engine prototype

Araoz

Cardozo

Salomón

et al. 2015

Applied Thermal Engineering

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h i g h l i g h t sA numerical model for a Stirling engine was developed. A mechanical efficiency analysis was included in the model. The model was validated with experimental data of a novel prototype. The model results permit a deeper insight into the engine operation. a b s t r a c tThis work presents the development and validation of a numerical model that represents the performance of a gamma Stirling engine prototype. The model follows a modular approach considering ideal adiabatic working spaces; limited internal and external heat transfer through the heat exchangers; and mechanical and thermal losses during the cycle. In addition, it includes the calculation of the mechanical efficiency taking into account the crank mechanism effectiveness and the forced work during the cycle. Consequently, the model aims to predict the work that can be effectively taken from the shaft. The model was compared with experimental data obtained in an experimental rig built for the engine prototype. The results showed an acceptable degree of accuracy when comparing with the experimental data, with errors ranging from ±1% to ±8% for the temperature in the heater side, less than ±1% error for the cooler temperatures, and ±1 to ±8% for the brake power calculations. Therefore, the model was probed adequate for study of the prototype performance. In addition, the results of the simulation reflected the limited performance obtained during the prototype experiments, and a first analysis of the results attributed this to the forced work during the cycle. The implemented model is the basis for a subsequent parametric analysis that will complement the results presented.

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Section: Workinggasmentioning

confidence: 99%

“…The model was validated with data obtained from an experimental rig built for the engine. The details about the methods used for the measurements are reported in Cardozo et al [24].…”

Section: Introductionmentioning

confidence: 99%

Development and validation of a thermodynamic model for the performance analysis of a gamma Stirling engine prototype

Araoz

Cardozo

Salomón

et al. 2015

Applied Thermal Engineering

Self Cite

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“…From Equation (2), if the heat rates, Q H , are to be the same for both engines and ATD H and C min are also equal then also the heat exchanger effectiveness values, ε H must be equal. Rearranging Equation (2) gives:…”

Section: Comparison Of Efficiency Based On Equal Atd H Valuesmentioning

confidence: 99%

“…(2) Both cycles are heated externally via identical heat exchangers using hot combustion flue-gas: a variable temperature heat source. (3)…”

Section: Comparison Of the Externally Heated Rjc (Recuperated Joule Cmentioning

confidence: 99%

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A Comparative Study of Open and Closed Heat-Engines for Small-Scale CHP Applications

Eames¹,

Evans²,

Pickering³

2016

Energies

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Abstract:In this paper the authors compare and contrast open and closed-cycle heat engines. First of all, by way of example and to aid discussion, the performance of proprietary externally heated closed-cycle Stirling engines is compared with that of internally heated open Otto cycle engines. Both types of engine have disadvantages and merits and this suggested that in order to accommodate the best of both engine types an externally-heated open-cycle engine might offer a more satisfactory solution for small-scale combined heat and power (CHP) systems. To investigate this possibility further the paper goes on to compare the performance of externally-heated and recuperated Joule hot-air cycle engines with that of an externally-heated closed Stirling cycle engines. The results show that an externally heated recuperated open Joule cycle engine can exceed that of a closed cycle Stirling engine operating between the same heat source and sink temperatures when a variable temperature heat source is used.

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Modeling and economic analysis of biomass and plastic conversion to power

Gunukula

Tran

2021

Biofuels Bioprod Bioref

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The viability of converting wood chips and plastic to power via compact integrated catalytic fast/slow pyrolysis, combustor, and Stirling engine technologies was determined using modeling analysis. Aspen simulations followed by sizing analysis were performed to determine the size, weight, and net energy efficiency of upgrading wood chips and plastic to power using a compact energy system with a feedstock processing capacity of 1 kg h −1 . The equipment and tooling to fabricate individual components of a compact energy system were identified. The total costs of fabricating all the individual components of compact energy systems were assessed. A discounted cash flow analysis with an internal rate of return of 20% was used to assess the minimum selling price of compact energy systems. The specific energy (Wh kg −1 ) of the compact catalytic fast pyrolysis system, compact slow pyrolysis system, and compact plastic conversion system were assessed at 20, 29, and 63, respectively. The assessed capital and annual costs of manufacturing 10

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Integration of a wood pellet burner and a Stirling engine to produce residential heat and power

Cited by 53 publications

References 21 publications

Development and validation of a thermodynamic model for the performance analysis of a gamma Stirling engine prototype

Development and validation of a thermodynamic model for the performance analysis of a gamma Stirling engine prototype

A Comparative Study of Open and Closed Heat-Engines for Small-Scale CHP Applications

Modeling and economic analysis of biomass and plastic conversion to power

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