Island Power, Inverters

The DC/AC inverter is the heart of any off-grid power system with electricity produced by solar and wind. Most small wind turbines and solar panels produce direct current (DC) electricity. However, the electricity you use in your home is alternating current (AC). We won’t bog down here with the details of that. Suffice it to say that you need to convert the DC to AC. The device that does this is called an inverter. The inverter draws power from the wind turbine and solar panels as well as from the batteries in the system. It then delivers it to the system in clean, regulated, AC form. Here’s a look a stack of four inverters as part of a system built by Outback Power.

Those four magic block boxes, one on top of each other, are the inverters. Each one of those takes 48 volt DC current and converts it to 120 volt AC current. The output of each one is combined in the adjacent boxes so that you can have both 120 and 240 volts. This system, with its four inverters produces a maximum of 10,000 watts of steady power. It can handle a surge load for a brief period of up to 14,000 watts.

10,000 watts is enough to power my entire house in Aruba, including those two power-hungry air conditioners. I rarely run them at the same time. Nonetheless, I’ve over-sized the system to handle the demand. Over-sizing is the key to happiness with off-grid systems (and pick-up trucks). It is always cheaper to build a larger system at the beginning than to upgrade later.

Lately, these systems have been growing in popularity. Companies like Outback have made them easier to set up, more efficient, and less maintenance intensive. Similarly, contractors have used them in “plug and play” systems that are easy for homeowners to understand. I can’t wait to have mine working and putting the money back into my own pocket instead of paying a utility company.

Published in: on August 31, 2008 at 10:45 am  Leave a Comment  
Tags: , , , , , , ,

Gear UP!

I remember my first flight. It was on the old Eastern Airlines. My family and I flew from Allentown-Bethlehem-Easton airport in Pennsylvania to Orlando, Florida. It was a Disney vacation for the five of us. The plane was not very crowded and we were allowed to spread out. I clambered into a window seat to watch the take off. For a small boy, it was huge thrill.

Since then, I’ve done my share of flying in various types of aircraft, from jetliners to small single engine craft to helicopters. Each time the plane makes that final turn onto the runway for takeoff, I can’t help but anticipate the joy of leaving the ground. The sound of the landing gear locking in the up position means we’re on our way to cruising altitude.

These days I’m fortunate to be able to travel to several faraway places on an annual basis. The downside is that travel is not as friendly as it was back on that flight with Eastern. Something happens when people get in line at the airport for a security check. Whatever it is, it only gets worse when they board the plane. By the time they’re in the air, they’re practically out of their minds. They commit all sorts of horrible acts. They harass the cabin staff. They expect gourmet meals from a galley the size of a closet. They have to smack the seats in every direction on their way back and forth to the lavatory the way a five-year-old would. On top of it all, they complain that their ticket costs too much. Really? They probably paid less per mile than it costs to drive a car with four paying people over the same distance.

I have no idea what causes this form of behavior. Flying used to be fun, glamourous, and exciting. I remember people used to dress well for a trip on an airplane. Now, it’s like a cattle call for that annoying character in every sitcom. Why? If you simply want to grind on people, pick another place, like your local Marine Corps base where the people inside might give back plenty of what you dish out. They might enjoy it and you might find it instructional.

Sadly, this experience replicates itself on cruise ships, in hotel lobbies, and on beaches, not to mention the line at the grocery store, the local freeway, and the movie theatre. I witness it and can’t help but wonder, “Man, can’t you work out your issues some other way?” I hear so many people talk about the pressure they’re under, the stress, the awful lives they lead. Hey, man, change it. Again, don’t tell me you can’t. It only took Edison a couple thousand tries before he got the light bulb. The Wright Brothers wrecked plenty of planes before they got one to fly. No doubt Harley and Davidson wiped out a good many bikes before straddling a cruiser that took to the road with all the glory they had envisioned. These people were doing things for the first time, things no one had done before. The rest of us, we’re your average citizen simply on the way from one place to another. Going along to get along might be the way to think and act.

Life is a work in progress, not a perfect state of being. Relax, enjoy the journey. When you figure out where you’re going, the destination will be still be there.

Published in: on August 26, 2008 at 9:05 am  Comments (3)  
Tags: , , , , , , , ,

Casa Vieja and the Bandeja Paisa

Lately I’ve been looking for a new place in Aruba to secure the massive Bandeja Paisa platter. I have my old standby joint in San Nicolaas, but I wanted to reach out for another version. After inquiring amongst my local friends they informed me that the place to go was called Casa Vieja, which is located about two minutes from the airport. My wife and I rolled in there yesterday, much to our delight.

As the name implies, the restaurant is in an old house. The covered area in front features tables. Through the double door is a small counter with a few stools, but the temperature inside will chase you out. I was happy to discover that the fellow operating this place used to have La Finca, a restaurant in the middle of Oranjestaad that has since passed to other hands. I remembered him from there but had never sampled his version of the bandeja. So I ordered and waited.

Lo and behold! The platter arrived at my table in all its glory. Here is a photo.

This is one way to fill the bottomless pit. For those of you not familiar with Colombian food, let me list what comes with this dish. A slice of flank steak, one egg fried hard, a piece of salchicha (sausage), chicharron (think a hunk of fried bacon), an arepa, a smashed and fried piece of plantain, small cole slaw-like salad, rice, beans (not shown), a slice each of avocado and tomato, and a wedge of lime. That’s a massive amount of food. I ate nearly everything aside of the avocado because I just don’t like it. The rest pretty much went down the hatch. I was full beyond breakfast the next day. Flavor was outstanding, including the hot sauce (also not shown) served on the side. Here I am with the owner.

Yes, I worked up a sweat eating that plate of food. As you have come to expect, I cooled down with an ICE-COLD Coca-Cola, the perfect thing to settle the gut after such punishment. If you get to Aruba, like Colombian food, and want to have it done right, give Casa Vieja a try.

Sunset from Santa Cruz

 I took this sunset photo looking west, northwest from Santa Cruz, Aruba. The church on the left is one that showed up in an earlier post.

Published in: on August 7, 2008 at 12:47 am  Leave a Comment  
Tags: , , , , , , , , ,