Tag Archives: double layer structure

Solar Power Fan Update

As many of you are aware, we have installed, and are testing an inflator fan which is run totally by solar power. We would like to eliminate or reduce the amount of variables and unknowns before we make this package available. One of the big questions has to do with how many days the little fan can run the way it is supposed to on consecutive cloudy days. During the aftermath of Hurricane Patricia we experienced numerous cloudy days in a row with the temperature just above freezing.

There is not enough margin for leeway in this package so we are checking out a smaller fan. If this works, then this would be the way to go for the smaller greenhouses. Our greenhouse has about 500 sq.ft. of double cover which is not all that big. This would also confirm that we need either need a bigger storage battery or a second solar panel.

Please stay tuned for more updates.

Inflator Fan Overview

An inflator fan is a very small fan which is attached to the inner layer of a double layer structure cover. Because the inflator is a squirrel cage type of fan, it can run continuously against the back pressure it has created without over heating.

The primary benefit of the process of putting air between the two layers of cover is to reduce heat loss. By having this cushion of “insulation”, the building experiences a significant reduction in condensation. The air filled pockets acts as a shock absorber therefore substantially stiffens the building in very windy locations. Covers tend to last longer since they are always tight.

The closer you are to achieving dead air space, the more these benefits can be maximized. 4”-5” of air space is optimum. Too much air space will result in air movement and reduced efficiency. When installing a double cover, both layers are on the outside of the structure but only the inside layer is pulled tight.

For all of those who are either off the grid or too far from a practical source of electricity, stay tuned for our solar powered inflator fan announcement coming very shortly

Please see #11 in our installation guide for more information https://multisheltersolutions.com/our-structure-options-coverings/installation-guide/