Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems
The flow characteristics of raw sewage directly affect the technical and economic performance of sewage-source heat pump systems. The purpose of this research is to characterize the flow characteristics of sewage by experimental means. A sophisticated and flexible experimental apparatus was designed...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/503624 |
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| author | Ying Xu Yuebin Wu Qiang Sun |
| author_facet | Ying Xu Yuebin Wu Qiang Sun |
| author_sort | Ying Xu |
| collection | DOAJ |
| description | The flow characteristics of raw sewage directly affect the technical and economic performance of sewage-source heat pump systems. The purpose of this research is to characterize the flow characteristics of sewage by experimental means. A sophisticated and flexible experimental apparatus was designed and constructed. Then the flow characteristics of the raw sewage were studied through laboratorial testing and theoretical analyses. Results indicated that raw sewage could be characterized as a power-law fluid with the rheological exponent n being 0.891 and the rheological coefficient k being 0.00175. In addition, the frictional loss factor formula in laminar flow for raw sewage was deduced by theoretical analysis of the power-law fluid. Furthermore, an explicit empirical formula for the frictional loss factor in turbulent flow was obtained through curve fitting of the experimental data. Finally, the equivalent viscosity of the raw sewage is defined in order to calculate the Reynolds number in turbulent flow regions; it was found that sewage had two to three times the viscosity of water at the same temperature. These results contributed to appropriate parameters of fluid properties when designing and operating sewage-source heat pump systems. |
| format | Article |
| id | doaj-art-9764e81e48ba40b7839761024b0e433c |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-9764e81e48ba40b7839761024b0e433c2025-08-20T03:37:08ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/503624503624Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump SystemsYing Xu0Yuebin Wu1Qiang Sun2School of Energy and Architecture, Harbin University of Commerce, Harbin 150028, ChinaSchool of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, ChinaThe flow characteristics of raw sewage directly affect the technical and economic performance of sewage-source heat pump systems. The purpose of this research is to characterize the flow characteristics of sewage by experimental means. A sophisticated and flexible experimental apparatus was designed and constructed. Then the flow characteristics of the raw sewage were studied through laboratorial testing and theoretical analyses. Results indicated that raw sewage could be characterized as a power-law fluid with the rheological exponent n being 0.891 and the rheological coefficient k being 0.00175. In addition, the frictional loss factor formula in laminar flow for raw sewage was deduced by theoretical analysis of the power-law fluid. Furthermore, an explicit empirical formula for the frictional loss factor in turbulent flow was obtained through curve fitting of the experimental data. Finally, the equivalent viscosity of the raw sewage is defined in order to calculate the Reynolds number in turbulent flow regions; it was found that sewage had two to three times the viscosity of water at the same temperature. These results contributed to appropriate parameters of fluid properties when designing and operating sewage-source heat pump systems.http://dx.doi.org/10.1155/2014/503624 |
| spellingShingle | Ying Xu Yuebin Wu Qiang Sun Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems The Scientific World Journal |
| title | Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems |
| title_full | Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems |
| title_fullStr | Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems |
| title_full_unstemmed | Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems |
| title_short | Flow Characteristics of the Raw Sewage for the Design of Sewage-Source Heat Pump Systems |
| title_sort | flow characteristics of the raw sewage for the design of sewage source heat pump systems |
| url | http://dx.doi.org/10.1155/2014/503624 |
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