For Home-Owners and Builders: Short Knowledge-Test on Energy-Efficient Housing

Question Title

* 1. What is the optimal orientation of a new residential building?

Windows and/or doors oriented towards the prevailing wind direction.

Windows and/or doors oriented towards the daytime course of the sun.

Windows and/or doors oriented towards maximal natural light.

Windows and/or doors oriented towards maximal airflow.

Question Title

* 2. What measures can help reduce the cooling load in a residential building?

Artificial shading outside the building to protect windows to reducing heating gains from the sun, e. g., sun glazing of windows, jalousies, awnings, roof overhang.

Shading windows inside, e.g., by closed window curtains.

Outside shading by natural landscaping, plants, shrubs, bush etc.

Dark painted roof and walls.

Insulation of roofs and walls.

Airtightness of windows and doors.

Question Title

* 3. What would be the theoretically required capacity (in kWp) of a Photovoltaic (PV) System that would be needed to cover the complete electricity demand of an average household of four persons in OCT countries?

15 kWp

20 kWp

5 kWp

10 kWp