Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

Standard

Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning. / Kærn, Martin Ryhl; Elmegaard, Brian.

Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press, 2012. p. 713-726.

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

Harvard

Kærn, MR & Elmegaard, B 2012, Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning. in Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press, pp. 713-726. DOI: 10.3384/ecp12076713

APA

Kærn, M. R., & Elmegaard, B. (2012). Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning. In Proceedings of the 9th International Modelica Conference (pp. 713-726). Linköping University Electronic Press. DOI: 10.3384/ecp12076713

CBE

Kærn MR, Elmegaard B. 2012. Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning. In Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press. pp. 713-726. Available from: 10.3384/ecp12076713

MLA

Kærn, Martin Ryhl and Brian Elmegaard "Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning". Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press. 2012. 713-726. Available: 10.3384/ecp12076713

Vancouver

Kærn MR, Elmegaard B. Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning. In Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press. 2012. p. 713-726. Available from, DOI: 10.3384/ecp12076713

Author

Kærn, Martin Ryhl; Elmegaard, Brian / Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning.

Proceedings of the 9th International Modelica Conference. Linköping University Electronic Press, 2012. p. 713-726.

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

Bibtex

@inbook{38c48e7686624adda0df8ed05d86c617,
title = "Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning",
keywords = "Refrigeration, Air-conditioning, Evaporator, Two-phase flow, Liquid injection, Pulsation, Transiemt, Dynamic, Modeling, Simulation, Modelica",
author = "Kærn, {Martin Ryhl} and Brian Elmegaard",
year = "2012",
doi = "10.3384/ecp12076713",
pages = "713--726",
booktitle = "Proceedings of the 9th International Modelica Conference",
publisher = "Linköping University Electronic Press",

}

RIS

TY - GEN

T1 - Modeling the discontinuous individual channel injection into fin-and-tube evaporators for residential air-conditioning

AU - Kærn,Martin Ryhl

AU - Elmegaard,Brian

PY - 2012

Y1 - 2012

N2 - In this paper a working principle based upon the novel expansion and distributor device EcoFlowTM is analyzed.The device enables compensation of flow maldistribution by control of individual channel superheat.The working principle is discontinuous liquid injection (pulsating flow) into each individual channels during aspecified cycle time. Moreover, the influence of the injection cycle time is investigated together with an optionalsecondary flow into the other channels with regards to cooling capacity, overall UA-value and COP.The results showed spurious fluctuations in pressure when simulating the pulsating flow, thus the dynamicbehavior in the mixture two-phase flow model is insufficient to model the discontinuous liquid injectionprinciple. Despite, the fluctuations and imperfections of the model we found that the cycle time should bekept as low as possible and that the optional secondary flow increases performance. Moreover, the paper reportson the applicability of Modelica developed models to analyze and optimize the working principle anddesign of expansion devices such that Modelica may be used in future development of novel discontinuousexpansion devices.

AB - In this paper a working principle based upon the novel expansion and distributor device EcoFlowTM is analyzed.The device enables compensation of flow maldistribution by control of individual channel superheat.The working principle is discontinuous liquid injection (pulsating flow) into each individual channels during aspecified cycle time. Moreover, the influence of the injection cycle time is investigated together with an optionalsecondary flow into the other channels with regards to cooling capacity, overall UA-value and COP.The results showed spurious fluctuations in pressure when simulating the pulsating flow, thus the dynamicbehavior in the mixture two-phase flow model is insufficient to model the discontinuous liquid injectionprinciple. Despite, the fluctuations and imperfections of the model we found that the cycle time should bekept as low as possible and that the optional secondary flow increases performance. Moreover, the paper reportson the applicability of Modelica developed models to analyze and optimize the working principle anddesign of expansion devices such that Modelica may be used in future development of novel discontinuousexpansion devices.

KW - Refrigeration

KW - Air-conditioning

KW - Evaporator

KW - Two-phase flow

KW - Liquid injection

KW - Pulsation

KW - Transiemt

KW - Dynamic

KW - Modeling

KW - Simulation

KW - Modelica

U2 - 10.3384/ecp12076713

DO - 10.3384/ecp12076713

M3 - Article in proceedings

SP - 713

EP - 726

BT - Proceedings of the 9th International Modelica Conference

PB - Linköping University Electronic Press

ER -