The control of the nuclear reactor was carried out by the water. There were
physical water (moisture) and chemical water (hidration water). The difference
between them is very important because, in order to be removed, the chemical
water needs a higher temperature than the physical one.
According to the model, for W <= 1%, Keff < 1 for any
C and t values.
This characteristic originated thermal oscillations. Starting with a certain
W value (for example, 10%) Keff > 1. The temperature,
T, increases exponentially.
Some water was removed, this worsening the moderation; meantine, W decreased,
and when W <= 1%, Keff < 1; so, T decreased and water
returned to their origin sites; W increased and Keff > 1; the
system returned to the initial state.
In this ways there could have been a series of thermal oscillations, which provided
the alternation of dry and wet periods necessary for the synthesis of biopolymers
(in accordance with the experience).
The heating period was very fast. The cooling period, however, must have been
much more slower, as happens with the cooling of an incandescent object. The
Tmax reached should have been greater than TB
due to the fact that the content of chemical water could have been enough to maintain
the Keff value greater than one.