Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications
In this paper, a series of experimental data about the role of the metal foam thickness on the total air flow pressure drop is presented. The tested metallic foams are based on aluminum and nickel-chromium and they are characterized by a considerable value of porosity (>0.92) and by a number...
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| Format: | Article |
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MDPI AG
2019-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/1/172 |
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| author | Stefano Cancellara Matteo Greppi Matteo Dongellini Giampietro Fabbri Cesare Biserni Gian Luca Morini |
| author_facet | Stefano Cancellara Matteo Greppi Matteo Dongellini Giampietro Fabbri Cesare Biserni Gian Luca Morini |
| author_sort | Stefano Cancellara |
| collection | DOAJ |
| description | In this paper, a series of experimental data about the role of the metal foam thickness on the total air flow pressure drop is presented. The tested metallic foams are based on aluminum and nickel-chromium and they are characterized by a considerable value of porosity (>0.92) and by a number of pores per linear inches (PPI) close to 10. The measures were conducted in a range of air velocity values typical for HVAC fan-coils. Under these conditions, the flow regime into the pores is highly turbulent. It was demonstrated that below a threshold value of the ratio between the thickness of the porous medium (H) and the characteristic dimension of the pores (d), the dispersion of the pressure drop values from a sample to another one can be very high. This behavior can limit the industrial use of these materials. In addition, the results presented in this paper confirm that the pressure drop data obtained under highly turbulent conditions can be conveniently used in order to determine the inertia coefficient, C, of the metal foam. |
| first_indexed | 2024-04-13T06:44:45Z |
| format | Article |
| id | doaj.art-6b5fa4f97e9b4f1e978677e019484353 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:44:45Z |
| publishDate | 2019-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-6b5fa4f97e9b4f1e978677e0194843532022-12-22T02:57:37ZengMDPI AGEnergies1996-10732019-12-0113117210.3390/en13010172en13010172Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC ApplicationsStefano Cancellara0Matteo Greppi1Matteo Dongellini2Giampietro Fabbri3Cesare Biserni4Gian Luca Morini5CIRI-EC, Alma Mater Studiorum Università di Bologna, Via del Lazzaretto 15, 40136 Bologna, ItalyCIRI-EC, Alma Mater Studiorum Università di Bologna, Via del Lazzaretto 15, 40136 Bologna, ItalyDipartimento di Ingegneria Industriale (DIN), Alma Mater Studiorum Università di Bologna, Viale Risorgimento 2, 40136 Bologna, ItalyDipartimento di Ingegneria Industriale (DIN), Alma Mater Studiorum Università di Bologna, Viale Risorgimento 2, 40136 Bologna, ItalyCIRI-EC, Alma Mater Studiorum Università di Bologna, Via del Lazzaretto 15, 40136 Bologna, ItalyCIRI-EC, Alma Mater Studiorum Università di Bologna, Via del Lazzaretto 15, 40136 Bologna, ItalyIn this paper, a series of experimental data about the role of the metal foam thickness on the total air flow pressure drop is presented. The tested metallic foams are based on aluminum and nickel-chromium and they are characterized by a considerable value of porosity (>0.92) and by a number of pores per linear inches (PPI) close to 10. The measures were conducted in a range of air velocity values typical for HVAC fan-coils. Under these conditions, the flow regime into the pores is highly turbulent. It was demonstrated that below a threshold value of the ratio between the thickness of the porous medium (H) and the characteristic dimension of the pores (d), the dispersion of the pressure drop values from a sample to another one can be very high. This behavior can limit the industrial use of these materials. In addition, the results presented in this paper confirm that the pressure drop data obtained under highly turbulent conditions can be conveniently used in order to determine the inertia coefficient, C, of the metal foam.https://www.mdpi.com/1996-1073/13/1/172metal foamspressure dropshvac fan-coil |
| spellingShingle | Stefano Cancellara Matteo Greppi Matteo Dongellini Giampietro Fabbri Cesare Biserni Gian Luca Morini Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications Energies metal foams pressure drops hvac fan-coil |
| title | Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications |
| title_full | Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications |
| title_fullStr | Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications |
| title_full_unstemmed | Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications |
| title_short | Experimental Investigation on the Pressure Drop of Air Flows Through Aluminum and Nickel-Chromium Metallic Foams for HVAC Applications |
| title_sort | experimental investigation on the pressure drop of air flows through aluminum and nickel chromium metallic foams for hvac applications |
| topic | metal foams pressure drops hvac fan-coil |
| url | https://www.mdpi.com/1996-1073/13/1/172 |
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