We use several images including infred imaging for the passive China greenhouse to explain why using the entire ground as a water pond with pond liner is critical in containing solar thermal heat in water, the best thermal mass for heat storage.
This time we present a PyraTENT designed for areas that do not have freezing conditions in winter time. In this case, it is possible to use water alone to modulate temperature and humidity in a POD like structure equiped by a double-layer envelope.
