Page 75 - Climate Compliance

There are 6 solar water heaters at RVA, the kitchen and most of the bathrooms
have hot water sourced from solar energy. A solar water heater works with room
temperature water that flows from the water tank to the solar collector. At the 75
collector, it is heated up and then returned to the hot water tank. Hot water is
then drawn on demand from the tank to the showers and sinks at the kitchen and
showers.

Biogas digesters

To become more sustainable with carbon neutral energy, a small biogas plant

was built by the kitchen. The biogas plant consists of a very simple technology.
The main part of the biogas system is a large tank, called the digester. It’s called
a digester because it is a large black tank filled with bacteria that digests organic
waste and converts it into methane gas. The biogas plant is fed daily with a
mixture of water, manure and kitchen waste.

The methane gas produced inside the biogas system is used in the RVA kitchen
for cooking. The system also makes slurry