Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating
This paper is part of the series of pre-standardization research aimed to analyze the existing methods of calculating the Buildings Energy Performance (PEC) in view of their correction of completing. The entire research activity aims to experimentally validate the PEC Calculation Algorithm as well a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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National R&D Institute URBAN-INCERC, INCERC Bucharest Branch
2010-01-01
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| Series: | Constructii: Journal of Civil Engineering Research |
| Subjects: | |
| Online Access: | http://constructii.incerc2004.ro/Archive/2010-1/art-4.pdf |
| _version_ | 1811232451885793280 |
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| author | Cristian PETCU Dan CONSTANTINESCU Horia PETRAN |
| author_facet | Cristian PETCU Dan CONSTANTINESCU Horia PETRAN |
| author_sort | Cristian PETCU |
| collection | DOAJ |
| description | This paper is part of the series of pre-standardization research aimed to analyze the existing methods of calculating the Buildings Energy Performance (PEC) in view of their correction of completing. The entire research activity aims to experimentally validate the PEC Calculation Algorithm as well as the comparative application, on the support of several case studies focused on representative buildings of the stock of buildings in Romania, of the PEC calculation methodology for buildings equipped with occupied spaces heating systems. The targets of the report are the experimental testing of the calculation models so far known (NP 048-2000, Mc 001-2006, SR EN 13790:2009), on the support provided by the CE INCERC Bucharest experimental building, together with the complex calculation algorithms specific to the dynamic modeling, for the evaluation of the occupied spaces heat demand in the cold season, specific to the traditional buildings and to modern buildings equipped with solar radiation passive systems, of the ventilated solar space type. The schedule of the measurements performed in the 2008-2009 cold season is presented as well as the primary processing of the measured data and the experimental validation of the heat demand monthly calculation methods, on the support of CE INCERC Bucharest. The calculation error per heating season (153 days of measurements) between the measured heat demand and the calculated one was of 0.61%, an exceptional value confirming the phenomenological nature of the INCERC method, NP 048-2006. The mathematical model specific to the hourly thermal balance is recurrent – decisional with alternating paces. The experimental validation of the theoretical model is based on the measurements performed on the CE INCERC Bucharest building, within a time lag of 57 days (06.01-04.03.2009). The measurements performed on the CE INCERC Bucharest building confirm the accuracy of the hourly calculation model by comparison to the values provided by measurements and to those provided by the monthly calculation (NP 048-2006). The deviations of 1.45% and 2.2% respectively validate the hourly calculation model, as they actually have no physical significance. The report presents a phenomenological analysis of the building transfer functions synthesized as tev (τ), functions which attest their phenomenological objectivity in macro and hourly terms. The case studies completing the calculation models experimental validation emphasize unacceptably large differences between the results provided by the use of standardized calculation methods (Mc 001 / 2-2006 and SR EN 13790:2009) and those specific to the methods referred to in this report, experimentally validated. |
| first_indexed | 2024-04-12T11:03:02Z |
| format | Article |
| id | doaj.art-0881773b85b644b28941d8d66e338504 |
| institution | Directory Open Access Journal |
| issn | 1221-2709 2247-0328 |
| language | English |
| last_indexed | 2024-04-12T11:03:02Z |
| publishDate | 2010-01-01 |
| publisher | National R&D Institute URBAN-INCERC, INCERC Bucharest Branch |
| record_format | Article |
| series | Constructii: Journal of Civil Engineering Research |
| spelling | doaj.art-0881773b85b644b28941d8d66e3385042022-12-22T03:35:53ZengNational R&D Institute URBAN-INCERC, INCERC Bucharest BranchConstructii: Journal of Civil Engineering Research1221-27092247-03282010-01-019172114Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heatingCristian PETCUDan CONSTANTINESCUHoria PETRANThis paper is part of the series of pre-standardization research aimed to analyze the existing methods of calculating the Buildings Energy Performance (PEC) in view of their correction of completing. The entire research activity aims to experimentally validate the PEC Calculation Algorithm as well as the comparative application, on the support of several case studies focused on representative buildings of the stock of buildings in Romania, of the PEC calculation methodology for buildings equipped with occupied spaces heating systems. The targets of the report are the experimental testing of the calculation models so far known (NP 048-2000, Mc 001-2006, SR EN 13790:2009), on the support provided by the CE INCERC Bucharest experimental building, together with the complex calculation algorithms specific to the dynamic modeling, for the evaluation of the occupied spaces heat demand in the cold season, specific to the traditional buildings and to modern buildings equipped with solar radiation passive systems, of the ventilated solar space type. The schedule of the measurements performed in the 2008-2009 cold season is presented as well as the primary processing of the measured data and the experimental validation of the heat demand monthly calculation methods, on the support of CE INCERC Bucharest. The calculation error per heating season (153 days of measurements) between the measured heat demand and the calculated one was of 0.61%, an exceptional value confirming the phenomenological nature of the INCERC method, NP 048-2006. The mathematical model specific to the hourly thermal balance is recurrent – decisional with alternating paces. The experimental validation of the theoretical model is based on the measurements performed on the CE INCERC Bucharest building, within a time lag of 57 days (06.01-04.03.2009). The measurements performed on the CE INCERC Bucharest building confirm the accuracy of the hourly calculation model by comparison to the values provided by measurements and to those provided by the monthly calculation (NP 048-2006). The deviations of 1.45% and 2.2% respectively validate the hourly calculation model, as they actually have no physical significance. The report presents a phenomenological analysis of the building transfer functions synthesized as tev (τ), functions which attest their phenomenological objectivity in macro and hourly terms. The case studies completing the calculation models experimental validation emphasize unacceptably large differences between the results provided by the use of standardized calculation methods (Mc 001 / 2-2006 and SR EN 13790:2009) and those specific to the methods referred to in this report, experimentally validated.http://constructii.incerc2004.ro/Archive/2010-1/art-4.pdfheat demand calculationhourly thermal balanceglazing ratheat demandcollective dwelling buildingoffice building |
| spellingShingle | Cristian PETCU Dan CONSTANTINESCU Horia PETRAN Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating Constructii: Journal of Civil Engineering Research heat demand calculation hourly thermal balance glazing rat heat demand collective dwelling building office building |
| title | Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating |
| title_full | Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating |
| title_fullStr | Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating |
| title_full_unstemmed | Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating |
| title_short | Experimental validation of the buildings energy performance (PEC) assessment methods with reference to occupied spaces heating |
| title_sort | experimental validation of the buildings energy performance pec assessment methods with reference to occupied spaces heating |
| topic | heat demand calculation hourly thermal balance glazing rat heat demand collective dwelling building office building |
| url | http://constructii.incerc2004.ro/Archive/2010-1/art-4.pdf |
| work_keys_str_mv | AT cristianpetcu experimentalvalidationofthebuildingsenergyperformancepecassessmentmethodswithreferencetooccupiedspacesheating AT danconstantinescu experimentalvalidationofthebuildingsenergyperformancepecassessmentmethodswithreferencetooccupiedspacesheating AT horiapetran experimentalvalidationofthebuildingsenergyperformancepecassessmentmethodswithreferencetooccupiedspacesheating |