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., 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. 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: 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",
publisher = "Linköping University Electronic Press",
author = "Kærn, {Martin Ryhl} and Brian Elmegaard",
year = "2012",
doi = "10.3384/ecp12076713",
pages = "713-726",
booktitle = "Proceedings of the 9th International Modelica Conference",

}

RIS

TY - GEN

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

A1 - Kærn,Martin Ryhl

A1 - Elmegaard,Brian

AU - Kærn,Martin Ryhl

AU - Elmegaard,Brian

PB - Linköping University Electronic Press

PY - 2012

Y1 - 2012

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

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

BT - Proceedings of the 9th International Modelica Conference

T2 - Proceedings of the 9th International Modelica Conference

SP - 713

EP - 726

ER -