Using windows to improve control of thermal conditions and carbon emissions
Country
Finland
Client
Finnglass
Sustainability as a core value
Sustainability is a core value for the Finnish glazing manufacturer Finnglass. All their production processes related to glass processing are carbon neutral. By continuously assessing the impact of their products, the company realised there was a need to study the effects of electric heated glass on buildings thermal conditions and carbon footprint so that they could present proven solutions to their customers.
CFD computing requires supercomputers and special expertise because the reliability of the calculation depends entirely on the expert’s skills. At Sweco, the expertise in CFD and carbon footprint computing is at a really high level. – Finnglass CEO Timo Saukko.
Energy consumption and carbon footprint of electric heated glass studied
Sweco studied the energy consumption and carbon footprint of electric heated glass in three different heating cases. The glass was combined with underfloor heating, fan convectors embedded into the floor and convectors mounted on the floor surface.
The effects of underfloor heating and electric heated glass on the temperature distribution and thermal comfort of the space were then compared.
Based on the study, electric heated glass can meet the energy efficiency requirements for new construction and optimise heating costs and carbon emissions. When used as needed, for example alongside a geothermal heating system when people are in the space, the combination can achieve a lower carbon footprint than district heat alone.
Sweco drew up planning instructions to help architects, HVAC and electrical designers better understand the properties of electric heated glass.
Averages are often used in the planning of indoor climate. However, the average temperature of the entire space can describe the thermal conditions poorly, for example near high windows. The design should not be satisfied with the fact that the space is good on average. Conditions must be good throughout the living area. Every designer wants to design buildings that meet high indoor air and low carbon requirements. – Kari Nöjd, Sweco’s Energy and Carbon Footprint Calculation Specialist.
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