Frequently Asked Questions

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General Questions

What is a Rocket Stove?

The technology we use is called ‘Rocket Stove’, and it’s widely used in various parts of the world. It’s a clever design that mixes air and burning gases together inside a vertical insulated combustion chamber that allows temperatures to rise to a point where near-complete combustion occurs. This causes to the smoke to be oxidized and converted to heat energy, which makes the stove both very efficient and clean burning.

Although the basic rocket stove concept already exists in many formats, it has not previously been applied to the Himalayan context as a heating unit in any meaningful way. There are some programs that use rocket stove technology in clean burning cook stoves – this is a different application of the technology which does not provide room heating.

Why is a Rocket Stove more efficient than other stoves?

There is a short answer to this, and a long answer.

The Short Answer
Rocket Stoves create an optimal combustion environment where smoke is combusted, releasing additional heat from the same fuel inputs.

The Long Answer
In essence, this para sums it up:

“It works by having an initial chemical reaction (burning) of some wood. The byproduct heat, gasses and materials from that reaction naturally move (through natural air flow) to a chamber where heat accumulates to a high steady state temperature. The temperature of the chamber achieved is much higher than achieved in a typical fire place, wood stove or even pellet stove (I need proof for pellet). Applying the “mass action law” if it truly applies, states at an equilibrium temperature the products of a reaction will be constant. Well, a very “rockety” rocket will be a very high temperature. That would change the completeness calculations how much can react. On top of that, the other compounds that would not normally burn, will burn. That would make the physical maximum change from 8,600 BTU per pound to a number that is higher. Maybe as high as 10,000 BTU. After the chamber, the exhaust serpentines through a mass until it vents outside. If the temperature of the exhaust going outside, is about the temperature of the air going into the system, then the transfer efficiency is nearly 100%. If all of that is true, a rocket mass heater could have 93% efficiency compared to the true theoretical maximum. ”

Read the full post here: https://permies.com/t/55938/rocket-stove-works-efficiently

What is unique about Eco Stoves?

The design philosophy at the heart of Eco Stoves is based on modularity, simplicity, durability and efficacy. 

Modular in both build and also functionality. 

Simple in terms of clean lines, ease of manufacturing, commitment to function then form. 

Durable materials designed to withstand the intense heat for as long as possible, and also to be easily replacable as needed.

Effective in terms of the stated aims of the product. Cookstoves should be good to cook on. Heaters should crank out the heat. 

If we can tick all these boxes, then we’re on track!

How did you get interested in ecological issues?

In my early 20’s (1990 – 1994) I lived on an alternative community that was completely off the grid. We had to supply all our own infrastructure, including power, water and sewerage. We built our own homes, grew veggies, planted fruit trees and lived close to nature in a beautiful coastal environment surrounded by National Parks and forest.

It was here I learnt many skills I have continued to find useful, such as building, working with solar power, storing water, working in the garden and using a composting toilet. Power and water was limited to what we had stored, so I became very attuned to careful consumption of these precious resources.

I developed a heightened sense of the ecological requirements for sustainable living, and have been interested in promoting this wherever possible. My extended periods of work and travel in the Himalayas has naturally overlapped with this interest, hence my involvement in various ecological programs in the mountains.

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