Vídeo 6. Curso de certificación energética para vivienda existente con CE3X

Curso de Certificación Energética para Vivienda Existente con C3X - Complementos de C3X para la definición de las medidas de mejora y análisis económico

In this video, we will learn about the complementos (add-ons) of C3X that help in defining improvement measures and conducting economic analysis.

Complementos de C3X

• Complementos facilitate the work of certifiers by allowing them to define improvement measures quickly and efficiently.

• Certifiers can use an assistant to select real contributory products and systems for improvement measures.

• The complemento internally calculates the economic cost of each selected measure.

Downloading Complementos

• Visit the Finovatic website to download available complementos.

• Various complementos are available, such as Finovatic's complemento for automatically filling administrative data or energy prices, generating energy labels, or verifying energy savings documents.

• Other complementos include those for certifying new buildings, improving thermal insulation, window openings, noise protection justification, window installation/replacement on roofs, language modification to Catalan, related to thermal installations in buildings, solar protection improvements in openings, importing data from Passive House calculations into C3X for certification purposes, ICAEN's complemento for energy audits, 3M's complemento for improving openings with low emissivity films, CMH Next Generation consortium's complemento for justifying energy savings in rehabilitation projects receiving financing from the European Central Bank.

Installing and Using Complementos

• After downloading a complemento from the website mentioned earlier:

• Right-click on it and select "Run as administrator" to install it.

• Once installed, open C3X and go to the "Complementos" section in the main menu.

• Installed complementos should appear here.

• Saint-Gobain's complemento is used as an example:

• It offers two options: Premium solution or interior-based improvement measures.

• Premium solution analyzes different scenarios and proposes the best solution, considering limitations for exterior actions.

• Interior-based improvement measures are selected for individual housing units, while SATI can be chosen for whole-building rehabilitation projects.

Defining Improvement Measures with Complementos

• Using Saint-Gobain's complemento:

• Create a new conjunto (set) and assign a name to it.

• Choose between Premium solution or interior-based improvement measures.

• Specify the element of the building to improve (e.g., exterior walls).

• Select the type of improvement measure (e.g., internal cladding).

• Define the characteristics of the improvement measure, such as thickness and materials.

• The assistant provides results, including energy rating, annual energy savings in euros, and increased property value.

Using USA Recomienda Complemento

• Access the USA Recomienda complemento from the "Complementos" section in C3X.

• Use the assistant to select the element to improve (e.g., insulation) and choose from recommended products.

Defining Improvement Measures with USA Recomienda Complemento

In this section, we will learn how to define improvement measures using the USA Recomienda complemento.

• Open C3X and go to "Complementos" > "USA Recomienda."

• Use the assistant to select the element to improve (e.g., insulation).

• Choose from recommended types of insulation products.

Conclusion

This video covered how to use complementos in C3X for defining improvement measures and conducting economic analysis.

Closing the Assistant and Adding a New Set

The transcript discusses closing the assistant and adding a new set to the existing defined sets.

Adding a New Set for Solar Protection in Windows

• A new set is defined for measuring solar protection in windows.

• The house being certified has windows facing the street, labeled as v2, v3, v4, and v5.

• Other windows face the interior.

• Measures for improvement are selected, including adding an awning to improve the street-facing windows.

• For windows facing an interior patio, motorized exterior solar control is chosen.

Analyzing Results and Creating a New Set

This section focuses on analyzing results and creating another set for improving house installations.

Analyzing Results of Emissions Scale

• Panel 4 displays results obtained on the emissions scale.

• There is a small improvement in the numerical indicator while maintaining the same letter grade.

• Energy primary remains unchanged but there is a change in letter grade.

• Economic analysis provides information on investment cost and payback period.

Creating Another Set for Improving House Installations

• A final set is defined to improve house installations using Al Toque complement.

• An installation analysis is chosen as a measure of improvement.

• Solar thermal panels are proposed as an addition to existing thermoelectric systems in the house.

• Details such as orientation, inclination, number of panels, and distribution coefficient are specified.

• The assistant provides information on qualification indicators related to emissions scale, non-renewable primary energy scale, and economic analysis with savings calculation over the lifespan of improvements.

Economic Analysis of Improvement Measures

This section covers economic analysis of improvement measures based on Real Decreto 390/2021 regulations.

Regulations for Certification Recommendations

• Real Decreto 390/2021, dated June 1st, regulates the content of energy efficiency certification.

• Section F of the decree includes recommendations for interventions to improve energy efficiency in buildings.

• Recommendations may cover improvements in building envelope, technical installations, automation and control systems, and optimal timing for proposed measures.

• Recommendations should be technically feasible and include estimates of investment recovery periods as well as improvements in comfort, health, and well-being.

Performing Economic Analysis

• The cost of proposed improvement measures is analyzed.

• An electricity bill is defined since the house has electric consumption for thermal installations (thermoelectric and heat pump).

• Annual consumption in kilowatts is specified along with the percentage of demands satisfied by electricity.

• Economic data is automatically populated based on complement costs.

• Results are calculated including net present value (NPV) and simple payback period.

Conclusion

The conclusion highlights the importance of considering economic analysis when proposing improvement measures.

Considerations for Improvement Measures

• C3X calculates two scenarios: one based on actual bills and another theoretical scenario if no bills are provided.

• A positive NPV indicates a profitable investment, while a negative NPV suggests that the investment may not be economically viable.

• Simple payback period indicates the number of years required to recover the initial investment considering economic savings from implementing improvement measures.