Hot diodes!: Dirt cheap cooking and electricity for the global poor? Development Engineering, October 2019.
Direct DC Solar (DDS) electricity can inexpensively cook food and charge appliances. Insulating the cooking chamber allows the food to cook with a lower-power (less expensive) solar panel over a longer cooking time. We explain how using a chain of diodes instead of a resistive heater extracts more energy from a solar panel over a variety of solar intensities and also acts as a rough, inexpensive voltage regulator to charge batteries and power appliances. We show how a diode heater produces more heat from a solar panel than either a DDS resistive heater or a PWM/battery-connected resistive heater, averaged over a wide variety of solar intensities. The resulting cost of electricity is already cost competitive with biomass cooking in many areas. Benefits include inexpensive access to electricity as well as reductions in indoor air pollution, deforestation, and cost/burden of providing cooking fuel. With continued decrease in the price of solar panels, DDS will become ever more effective for bringing electricity and electrical cooking to the global poor.
Two Birds, One Stone—Reframing Cooking Energy Policies in Africa and Asia – MDPI, April 2019
This paper describes how a new UK Aid programme (April 2019) will be seeking to intentionally change international energy policy and enable a significant transition in energy use. The programme is new and has yet to prove itself, however, the analysis presented in the paper illustrates how it is constructed to reframe the problem, build new networks, develop capacities to respond to emerging technologies and system models and to build institutional capacities to redirect resources to the proposed strategy, i.e., to intentionally enable the transition of policies.
Solar electric cooking in Africa: Where will the transition happen first? – Energy Research & Social Science, June 2018
The speed and degree to which this concept is taken up is expected to vary widely across this culturally and physically diverse continent, however its potential impact is considerable. eCook systems could play a major role in meeting SDG 7; largely by facilitating access to affordable, reliable, sustainable modern energy for all in relation to cooking.
eCook: What behavioural challenges await this potentially transformative concept? – Sustainable Energy, Technologies and Assessments, August 2017
This paper is situated at the intersection between two major global challenges; the continued use of biomass for cooking amongst large swathes of the global population which is harmful to health and to the environment, and the challenge to extend modern energy access to all (encapsulated within the seventh Sustainable Development Goal).