Data driven process for the energy assessment of building envelope retrofits
| Autor: | Beñat Arregi, Mikel Lumbreras, Belén Zurro, Roberto Garay-Martinez, Jose Manuel Gonzalez, José L. Hernández |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Relation (database)
Process (engineering) Computer science DH systems Building envelopes 0211 other engineering and technologies ULTDH 02 engineering and technology 010501 environmental sciences 01 natural sciences 7. Clean energy Civil engineering Data-driven solar thermal Order (exchange) Building 021108 energy lcsh:Environmental sciences energy efficiency 0105 earth and related environmental sciences district heating lcsh:GE1-350 district heating substations network level Ultra-Low temperature Heat loss renewable energy whole-building heat Heat transfer energy flexibility Reduction (mathematics) Energy (signal processing) Building envelope |
| Zdroj: | E3S Web of Conferences, Vol 172, p 25001 (2020) TECNALIA Publications Fundación Tecnalia Research & Innovation E3S Web of Conferences |
| Popis: | In the paper“Data driven process for the energy assessment of building envelope retrofits”, a novel method is proposed based on whole-building heat load assessment by means of heat meters, and analytical calculations of building envelope transmission heat load coefficients. In the last decades, a growing industry has been created in relation to building envelope retrofits. Linked to the lack of financial capacity of many building owners, innovative instruments such as energy performance contracts have been promoted by public bodies. This kind of instruments require of detailed energy assessment processes in order to define the expected heat load reduction and the associated economic flows between building owners and Energy Services Companies. When dealing with building envelopes, existing methods for building envelope heat loss characterization require of substantial efforts in terms of equipment and time, which makes them difficult to apply in real practice. In this paper, a novel method is proposed based on whole-building heat load assessment by means of heat meters, and analytical calculations of building envelope transmission heat load coefficients. This method, which requires minimal or no additional equipment, can be used over historical data from District Heating systems. It assigns a specific load fraction to building envelope heat transfer and allows to assess the expected reduction due to the building envelope retrofit. Numerical and experimental data is presented based on an educational building in the city of Burgos, Spain. |
| Databáze: | OpenAIRE |
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