The background photo shows an art installation in Ottawa that looks heliostat-inspired.
“Residential energy use is responsible for about 20% of total greenhouse gas (GHG) emissions in the US.”
Last accessed 6 Nov 2022.
Figure not found in a peer reviewed source but probably partly based on
Dichter, N., & Aboud, A. (2020). Analysis of Greenhouse Gas Emissions from Residential Heating Technologies in the USA. UC Davis Western Cooling Efficiency Center. https://wcec.ucdavis.edu/wp-content/uploads/GHG-Emissions-from-Residential-
The carbon emissions on these shores appear to be roughly evenly distributed across sectors. (See: “Overview of greenhouse gasses”, publisher: EPA, govt, USA) Therefore, meaningful reductions will require a combination of collective action and household-level action: neither will suffice by itself.
From Zig Ziglar, we have this: “Whatever you need to do, do a little every day.”
Safety: Do not use warped plywood for the reflector or it may focus sunlight and cause a fire. Replace or reverse it if it becomes warped. Waterproof it carefully before putting it into service. Inspect for foci periodically and after each rain and renew or reverse the reflector if any are found.
Linseed oil safety:
I use push-rods made of wooden dowels to set the angles. These can be marked with a pencil to show the daily series of settings that must be reproduced by a future computerized controller. The dowel can be rotated to get a fresh surface for marking the results for the following month. In future, each dowel will be replaced by some electric device such as a car's cable-type power window regulator, illustrated below. The system diagram shown in the gallery is proposed and not built.
The problem of clouds could be mitigated by fitting a small hydroelectric turbine to the bottom of each of the home’s downspouts, thereby charging the storage cells on precisely the days photovoltaics are least productive: rain days. In case of light rain, a valve near the turbine could be used to store up rainwater inside the gutters and downspout and release it at intervals. The valve would be triggered to open by water entering an overflow weir up on the gutter. Closing would be timer-controlled but vetoed by an ongoing overflow.