Identification of commercial suppliers of control valve resistant to strong acids is required. The valve is envisioned as operating via a low pressure pneumatic or mechanical actuator.
Read Challenge Details for Challenge 5840609
A design for dry-based biolatrines for rural schools in Africa is needed. The biolatrines will contribute to efforts to improve sanitation and water preservation in parts of Africa struggling with increased demand for safe water. This challenge is sponsored by the Rockefeller Foundation and requires only a written proposal.
Read Challenge Details for Challenge 5676808
A design for a solar-powered wireless router composed of low-cost, readily available hardware and software components is needed. The router is to become part of a reliable Internet communication network connecting metropolises and remote towns in developing countries. This challenge sponsored by the Rockefeller Foundation requires only a written proposal.
Read Challenge Details for Challenge 5644660
A 100% plant oil (non-edible oil) stove has been developed to replace Kerosene as a cooking fuel. The fuel pursued is ’straight vegetable oil’ instead of bio-diesel because the ’straight’ vegetable oil will not undergo any processing or refining.
The ultimate mission of the endeavor is to promote rural energy independence by encouraging the use of a renewable energy source (plant oil) instead of non-renewable sources like kerosene. If successful, this product will be a boon to several BOP (Bottom of Pyramid) people by reducing their dependence on Kerosene and encouraging the use of a more sustainable, renewable energy source.
The Challenge on hand is as follows: The current model can only burn for 2 hours before clogging up with carbon deposits) The goal is to adapt/modify/improve this stove design so that it can burn for 10 hours or more before requiring cleaning.
Read Challenge Details for Challenge 5454257