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G-value lab

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Laboratory for measuring the solar factor (g-value)

The G-value Lab measures the solar factor, which is often referred to as the g-value or solar heat gain coefficient (SHGC). SHGC is the amount of solar energy that is transmitted through a glazed component. In our lab, we can measure the solar factor of transparent and semi-transparent envelope elements, including integrated shielding components. The precise measurement of this value improves the performance predictions of simple glazing, as well as of more complex and innovative envelope solutions and thus facilitates new building projects and restorations.

 

Measurement of the solar factor of doors and windows and other transparent and semi-transparent components

The laboratory consists of a sun simulator; a climatic chamber for monitoring test conditions (temperature and relative humidity); an insulated support on which the sample is placed; an absorber to remove energy that passes through the specimen; and a hydraulic circuit connected to the absorber that disposes of the removed energy. Tests can be tailored to the customer’s needs at various levels of complexity and support. With the support of our researchers, standard solar factor measurement tests and customised tests can help improve prototypes and develop new solutions.​


Types of tests performed 

The experimental set up measures the solar factor according to
three methodologies:
• measurement based on the thermal flow through the use of thermo-flowmeters
• measurement based on the inlet and outlet temperature of the absorber and on the water flow
• measurement based on the use of an additional electrical resistance


Company service expertise

Our skills have been honed by our participation in international research networks that support companies in the field of energy efficiency of buildings and natural lighting. The knowledge-base we have acquired, together with the flexibility of the laboratory, allows researchers to assist companies and designers in the performance characterisation and optimisation of individual components, as well as in the development of innovative technological and architectural solutions.


​For further information please contact Roberto Lollini​


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PHO​TO GALLERY​

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FLYER

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A.-Volta-Straße 13/A/Via A.Volta 13/A
39100 BOZEN-BOLZANO
Tel. +39 0471 055 600
Fax. +39 0471 055 699
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CONTACT

Viale Druso, 1 / Drususallee 1
39100 Bolzano / Bozen - Italy
How to reach us​
Tel: +39 0471 055 055
Fax: +39 0471 055 099
Email: info@eurac.edu
Partita IVA: 01659400210
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