Trombe Wall Construction in Egypt (IMAGE) Lund University Caption The Trombe wall ventilation system (to the left) has through a research project been modified to be used both for heating and cooling using renewable energy sources. Credit Photo: Marwa Dabaieh / Lund University Usage Restrictions Photo: Marwa Dabaieh / Lund University License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.