The ‘Comfort EyeTool’ implemented as part of BIM-SPEED project is developed with the need for the objectives set by the BIM-SPEED Project. The Comfort eye allow to assess the thermal comfort and the air quality with the scope of providing support to the residential renovation project. It helps in:

• Methodology and tools for the holistic building performance assessment.
• Framework to compare building performance before and after renovation, considering all main aspects (thermal comfort, indoor air quality, inhabitant’s comfort, etc.)
• Dashboard for KPI (Key Performance Indicators) review to support the design team, stakeholders and inhabitants to select the most optimal renovation solution.

An innovative IoT BIM BASED system is developed for Thermal comfort and indoor air quality assessment, the Comfort Eye. This sensor allows to perform long term monitoring continuously and in real time. It is composed of two nodes; the IR node and the desk node obtaining thermographic image and detailed information about the air quality of the living environment and helps to plan interventions that lead to improve air quality.

Basically, a methodology to assess KPI (Key Performance Indicator) regarding thermal comfort and Indoor air quality is developed. To improve the analysis and support the renovation a sensitivity analysis is applied. It is used to identify the most critical parameter that create discomfort conditions or the deviation from the required comfort standards. Thus, the retrofit solution should be selected to reduce their impact, improving the building performances and the capacity of the building to reach the optimal comfort conditions and keep it constant.

Fig: Comparison between Common Practice and BIM-Speed Solution

The Comfort Eye is installed in buildings, and is composed by two nodes, the ceiling node and the desk node.

The ceiling node needs the 12V power supply on the ceiling and it is no always available.

The system needs, for the continuous and real time communication of the data, a network.

BIMSPEED Deliverable 1.1: Methods for architectural, structural, thermal 3D data acquisition of existing buildings

BIMSPEED Deliverable 1.3 : IT solutions to couple dynamic data of the existing buildings to BIM

BIMSPEED Deliverable 4.1 - Baseline and Use Cases for  BIM-based renovation projects and KPIs for EEB renovation

BIMSPEED Deliverable 4.3 - Practical framework for BIM-based acoustic, thermal comfort, and indoor air quality

• BIM: Building Information Modelling
• IFC: Industry Foundation Classes
• JSON: JavaScript Object Notation
• IEQ: Indoor Environment Quality