Pathway 2 · For people

Heat can become more than heat

For a dairy, a market or a clinic, heat could mean food kept cold, harvests dried and water made safer to drink. Jenja is designed to produce heat as well as gas, and that heat could be put to work.

StatusJenja has not yet run at a site, and its heat output has not yet been measured.
Illustration for Pathway 2: heat, cooling and safe water.
Illustration  |  not a Jenja installation. No site has been built yet.
The problem

Food spoils without cooling, and water can be unsafe without treatment.

Both usually need energy, and where energy is scarce the trade-off gets made at household level: boil it, or drink what is closest.

14%

of food is lost between harvest and retail.30 Poor storage and a lack of cooling are among the main causes.31

2.1 billion

people, one in four worldwide, were without safely managed drinking water in 2024.32

395,000

deaths among children under five in 2019 linked to unsafe water, sanitation and hygiene. Part of 1.4 million such deaths in total that year, most of them from diarrhoeal disease.33

For a clinic, a market or a dairy, the absence of cooling or safe water is not an abstraction. It decides what can be stored, what can be sold, and what can be treated safely.

What could change

One heat stream, several possible uses.

Jenja is designed to produce useful heat. In the right system, that heat could support cooling, drying and water treatment.

InputResidue
What the site already holds
→
ProcessJenja
Designed to produce gas and heat
→
OutputUseful heat
Available as a process stream
Cooling
  • An absorption chiller driven by heat rather than electricity
  • Cold storage for food and produce
  • Could help keep medicines and vaccines cold, using cooling equipment that holds them at the temperature they need
Water
  • Pasteurisation using heat
  • Treatment support and pumping where power is available
  • Household and clinic water supply
Drying and other heat
  • Drying of produce and residue
  • Process heat for a nearby operation
  • Any thermal load that accepts the temperature available

The route itself has been studied. Researchers have modelled a biomass gasifier, an engine and an absorption chiller working together to supply a building with power, heat and cooling.34

A possible Zero-X deployment

Six steps from residue to a social outcome.

Step 1

The site already has waste

Residue that is currently a disposal cost, a nuisance or an open pile.

Step 2

Waste becomes useful energy

Jenja is designed to convert it into fuel gas and heat.

Step 3

Electricity can power pumps and treatment

In its power configuration, Jenja is designed to produce its own electricity. Its electrical output has not yet been measured.

Step 4

Heat can support pasteurisation

Heat applied to water for long enough to make it safe, using heat from Jenja rather than extra fuel.

Step 5

Cooling can protect food and medicine

An absorption chiller driven by the same heat stream, where the site has a cold load that justifies it.

Step 6

The social outcome depends on deployment

Who benefits, and by how much, depends on ownership, operation, tariffs and local conditions.

Each step becomes real once Jenja runs at a site.

How heat makes water safe. Most pathogens are inactivated at 60 to 70 degrees Celsius for at least one minute, and practical guidance is 70 degrees for 15 minutes.35 Pasteurisation gives no lasting protection, so treated water should be used soon and stored in safe containers.36 Pasteurisation does not remove turbidity.37

What is next

From design to a working site.

The next step is a site with a real need for cooling or safe water, such as a dairy, a market, a clinic or a port, where Jenja's heat can be measured and put to work.

← Pathway 1, energy where it is missingPathway 3, replacing fossil energy →