Back to activities

Trombe Wall (Solar Technology)

0 mins Read

70% Complete

A trombe wall keeps rooms warm in winter and cool in summer! We demonstrate a simple trombe wall in the park and hope others will be inspired by the great potential of this #technology especially in mountain areas for heating and cooling living spaces using the sun’s #energy.


The #trombe wall is a south-facing masonry wall with a layer of glass spaced a few inches away. #Sunlight passes through the glass and is absorbed and stored by the wall. The outside wall is painted black to increase its absorptive capacity. The inside, or discharge surface, of the #TrombeWall can be painted white to enhance lighting efficiency within the space. However, the outside large dark walls sheathed in glass must be carefully designed for both proper performance and aesthetics.

#Solar #radiation is absorbed by the blackened surface and stored as heat in the wall. Air, in the space between the glazing and the wall, gets heated up and enters the living space through upper vents. Cooler room passes through the lower vents, thus establishing a natural circulation pattern. This technology is especially useful in the #mountains where the temperature is very low in #winter.

Related activities

19 Oct 2020 Soil management
Mulching with leaf-litters

The benefits of mulching? Mulch is a covering, using straw, compost, or plastic sheeting, spread on the ground around plants ...

11 Dec 2019 Scientific research
Carbon monitoring

An inventory of carbon monitoring plots was conducted in May 2012 to establish a mechanism for long-term monitoring of forest ...

11 Dec 2019 Soil management

One of the bases for establishing sustainable farming systems is to integrate nitrogen-fixing plants into the system, whether in the ...

11 Dec 2019 Water management
Various water harvesting ways

Natural Spring Water Harvesting There is a natural spring on the site at the Sungure Khola Chiso Pani Dhara. ...

11 Dec 2019 Community outreach
Scaling up technologies

There are three main thrusts of the scaling up efforts. Collaboration with the NGO ‘Educate The Children/Nepal’ ‘Educate The Children/Nepal’ ...

Non-solar Technologies – briquetting, improved stoves

Beehive briquetting technology This technique is an adaptation of methods used to produce charcoal for ...

11 Dec 2019 Community outreach
Community outreach – off-site demonstrations and training and provision of materials

From the very beginning, we have focused on developing a variety of approaches for sharing the knowledge and ...

Vegetation management

At the time that ICIMOD established the Godavari site, the land had been reduced to almost completely degraded ...