How complex is a solar charging system? Simple.

There is no denying that solar power and wind power are the way of the future; otherwise there might be no power in the future, or no future, period.   Most people know this in the back of their mind, but still, even in these fast changing times, many are reticently behind the curve and stubbornly resistant to making the needed and viable changes – not just in installing entire solar or wind powered energy systems, but even in simple appliances like a solar-powered A/C.   The reticence is in part due to their being intimidated by the perceived complexity of solar and wind energy technology, or baffled by a simple wiring diagram. And so they avoid the issue, even when given the forced opportunity of needing a new roof after a hurricane. So here, let me present not one, not two, but three simple schematic diagrams.     Here Read More …

Why solar-powered A/Cs make perfect sense

This is going to be a short post, because the idea is simple. It is obvious that under extraordinary circumstance, e.g. a hurricane, entire power grids could go dark for hours, days, weeks, even months, when the only ACs left running the whole time would be those on solar power and/or wind power. Under ordinary circumstances including the average hot summer day, peak-hour demand could cause city-wide blackouts, just when the mercury goes the highest. Not only would the off-grid solar powered A/Cs and solar generators keep on working but keep on working at peak efficiency during the hottest part of the day – exactly as should be. A more beautiful coupling between two separate technologies is hard to find.   So, how much does one such solar-powered air conditioning system cost? There are several integrated systems on the market priced in the mid-$2,000 range. Having checkout the components, I Read More …

Irma says, “Get a solar charger now!”

A couple of days before Irma’s most un-lady-like visit, Floridians emptied store-shelves of food, water, flashlights, AA batteries, first-aid kits, even guns and ammo, but there is one item they, at least those who had cell phones, didn’t think of buying – a solar cell-phone charger. During Irma’s visit, power outages were wide-spread and long lasting. Many places remain without power, even now and in the foreseeable future. In the Obama era, many schools in Florida were recipient to government funded solar panel systems. It was at places like these schools, and some PDs, that tens of thousands of people had to line up, sometimes for hours, to get their cell phones charged, and when they finally got there, they had all of 10 MINUTES of charging time before having to yield to the next cell-phone – go back to the end of the line if you need more juice! On Read More …

Green tech products & solutions

There is a monstrous killer heatwave covering the city for the last two days. “115 in the shade, but there is no shade”, says the weatherman. The A/C’s been cranked up to 10, but the thermostat just can’t make it back down below 90. The ceiling fan is spinning to the max, but can’t cool you due to the humidity. You open the fridge to get some cold OJ, and just when the door is open, the light inside blinks out. You curse, close the fridge door to keep the OJ cool, but notice that all the other lights had gone off as well. You curse again, grope for the flashlight to go down to the circuit breaker in the basement, and then notice that your neighborhood has gone dark as well. Not only the house lights, but even the street lights; just the momentary headlights of a car.  And Read More …