Tag Archives: kienle

Solar Power (part 3)

(continued from part 2)

Together Alex and I started digging in my front yard in early October while our supplies were on their way. There was to be a big 3×3 feet hole, almost seven feet deep.

This was where our steel post was going.

The main hole soon got too narrow for two people and I started digging the 24 inch deep trench for the electric line going from the post to the house. You want to keep that as short as you can. The longer the cable the more power you loose on the way to the inverter. These are pretty hefty cables, too.

Of course, in the pretty Fall weather our two girls wanted to have a part in the fun.

Eventually the digging was complete. Most of the supplies had arrived. The first step was to set the post. This is one hefty piece of metal. Since we didn’t have a crane we devised a way to roll the 16 foot pipe with five people off the flatbed trailer, onto a four foot pipe of the same kind – so we could roll it towards the hole (it was a 20 foot post but since we needed only 16 feet we had one four foot piece left over). After the post was in the hole Alex started to prepare it for a concrete pour.

After that there were two days of electrical installations. There are actually two separate cable pairs going from the post to the house. Only one pair will be used at first. If we decide to add on a second row of panels all the wiring will be in place. These wires go into  the basement and connect to the inverter.

Made in Germany (I am proud to say). This piece of equipment turns the ~400V Direct Current (DC) coming from the panels into 110V Alternate Current (AC). After the actual solar panels the inverter is the most expensive piece of equipment needed. It’s also the one you will have to replace after ten years or so.

Then it got cold and we had to wait for the final paperwork from our power company. We will be the first grid tied solar installation of all their customers. I think they will watch us with great interest.

Currently (January 2nd) everything is ready to go. The panels are in the basement,

the mounting brackets are sitting under the deck,

and the post is waiting for a few days break in the weather.

(to be continued)

Solar Power (part 2)

(continued from part 1)

Alex, my solar assessor – his company is Solar Systems of Indiana – came over one cold winter day early 2008 with his Solar Pathfinder and a device called a Kill-A-Watt. The Solar Pathfinder is used to determine the best place on your property for a solar installation and how much sunlight you can actually harvest taking into consideration stuff like tree line and geographical location. The Kill-A-Watt is such a good investment that I got one myself and it makes the rounds through my friends’ houses. Do you know how much electricity your refrigerator uses in a day? Your computer? (with all attachments such as external drives and scanners etc. on?) How about your waterbed? Or your cell phone charger (which you probably leave plugged in even while you carry your cell phone around with you)? Even though I have been frugal in my power use all my life (and believe me, my wife and kids hate me for being after them all the time to turn the lights off when they leave the room), after Alex had measured the power usage of some stuff in my house I was able to cut back even more. In retrospect, the sheer process of measuring this stuff, and learning as you go, how much it costs to build power plants, etc. makes you very conscious about waste – and that’s a good thing.

Of course being the only Solar Assessor in my state means that this guy is busy. After his visit to my house he prepared a report for me. Pretty detailed. It turned out that my property had potential if we mounted the panels in the front yard on the ground or on a post – not on the roof. There are other considerations with roof mounting, especially penetration and possible weight issues. In the time from the assessment until Alex finally located some free time to start the actual planning of the installation (around June 2008) I went to a seminar at Indiana University dealing with many aspects of home solar technology. I learned a lot and thought for a while that I might actually learn some more, take a weekend seminar in Wisconsin, get certified and become the second Solar Assessor in Indiana. It didn’t go that way.

I spent most of July in Germany and then August, back home, writing down my energy usage to determine the base load to be able to size the system we were going to get. Base load is essentially all your power users which are on all the time such as refrigerator, computers, whatever. In the hot Indiana Fall, with the geothermal doing the AC,  I was able to determine the base load at just around one kilowatt. Then we started to devise a system.

  • 1)  We never had plans to go off the grid. I didn’t want an over sized six kilowatt solar array ($60,000) and a truckload of lead-acid batteries in the basement and then still face the possibility of running out of juice in the middle of February because of lack of sunlight.
  • 2) While utilities in Indiana are required to pay retail for what you overproduce and feed back into the grid our power supplier is a Co-op and they do not have to do that. They pay wholesale rates. So too much overproduction was not feasible. This pretty much sized our system at 1.2KW. Six panels, pole mounted, in the front of the house.

Then, in late September, came the $15,000 shopping list to the supplier. And early October Alex showed up at my house with a shovel and said: “Let’s dig!”

(to be continued)

Solar Power (part 1)

In the last year or so the term ‘alternative power’ has really come to the forefront again. High fuel prices, talk about peak oil and dirty coal. Good thing, too, because we need to talk about it. Especially during 2008 I kept getting emails from countless action groups and organizations such as the Sierra Club and the World Wildlife Fund mentioning it. The issue is actually on people’s minds….

For some reason it has been on my mind since I was a teenager. If you have read some of my other entries here you will be aware that big, complex engineering holds high fascination for me. All sorts of power plants fall into that category. From giant dams to nuclear power plants, from wind turbines to geothermal. And there are of course the more esoteric, fantastic or futuristic things such as fusion, solar power satellites, deep geothermal, tides, etc.

But what is an ordinary citizen supposed do to about all of that? Sure, you can contribute to some of the organizations who lobby for clean power and oil independence in Washington. But still, somehow somebody has to do the dirty work, build something, make something work. Only scientists get to do the cutting edge stuff. We consumers just have to wait until product becomes available at our local hardware stores – sometimes ten years after you first read about it in Scientific American, often never.

Here’s the first part of our ongoing story:
We bought our home in 1995. After paying rent all my apartment-life it came as quite a shock that not only could you do stuff to your house and garden but unless you wanted to call somebody to fix that drain or dig that hole YOU had to do it yourself.

When we moved into the house we had a brand new gas furnace installed. It was fairly efficient but a few really cold winters convinced us that some other heat source might be more economic. I spent the first half of 2001 looking for a local contractor who knew how to install a geothermal heating & cooling system. Around May I found somebody – 90 minutes drive south. In August, in the course of a few days, the system was installed. We spent a bit over $10,000 on it but it works much more efficient than the gas furnace. Since then the gas prices have gone up even more and my latest calculations show that we did break even already.

After that I started seriously looking into solar power. But, really, in the first years of this decade nobody wanted to hear about it. My car mechanic and my dentist both told me they had solar panels installed in the early seventies after the first energy crisis. Their experience was not a good one – non-standardized systems, no spare parts available and nobody close by to maintain it. So, for about six or seven years I kept looking around for somebody to help me. Sure, there was (and is) plenty of the needed material for sale at places on the internet. There are plans, layouts, articles. But I really wanted somebody to come to my house, look at the property and tell me whether this was feasible or a pipe dream.

In late 2007 there was a little press about a few houses being built in the city of Bloomington, IN (my hometown). Some of these houses had solar panels on their roofs. Through the real estate company I found the person who had put these on. And guess what. He lives about a mile from my house, is a well known rock drummer in town and happens to be the only certified Solar Power Assessor in the whole state of Indiana.

(to be continued)

Same old garbage…

(The following was written in March 2008 when the US primaries were in full swing, gasoline was around $4. It still expresses some of my deepest concerns.)

When I shop at groceries around town, I always bring my basket and a few empty paper bags. Have been doing this for years. Still the bagger (bagging person?) looks at me strange when I tell him/her that I don’t want a bag. They always try to use the most plastic possible. I don’t need extra plastic bags for my ice cream, broccoli, bananas. Many times did I ask them to take stuff out of plastic bags – ‘what a weirdo’ is the look I get.

I remember many years ago in Germany when costs for garbage pickup went higher and higher people started unpacking some goods which came in unnecessary packaging right at the store on the belt and they left the extra cardboard and plastic at the store. Let them pay for the disposal. Manufacturers and distributors took note and packaging was scaled back.

Now, the gas prices. Did I hear right? John McCain promises to lower gas prices by suspending taxes on gasoline? Wait, isn’t it a free market economy? If we use more gasoline and other oil-based products wouldn’t that naturally raise the price? Of course changing the way vehicles get taxed would be fairer if done according to gas consumption and environmental impact. Mr. McCain, what about giving people who drive fuel efficient vehicles a tax break, instead? That might actually get a few people to say good-bye to their gas guzzlers. (Have you ever stopped at a gas station at 2 in the morning where the person on the next pump had the engine running while filling up, then going in to buy some more stuff, take a leak, have a chat with the attendant, etc. Have you ever asked her/him if they were aware that in those 8 minutes they just burned enough gas to travel a few miles (ok, I don’t remember the numbers exactly). Chances are you’ll get a pretty angry response – after all, this is America where people can do whatever they want even if it’s stupid.)

And just as I was taking a little bike tour in my neighborhood this very pretty evening I noticed that at almost every house lawns were being mowed on the ever so popular riding mower. Actually many of the mower-riders looked like they could do with a little exercise. In addition the properties are not really that big and the grass really hasn’t grown much yet. I also noticed all the garbage in the ditches. Mostly plastic bottles, plastic bags, lots of beer bottles and half empty McDonald’s bags. How ugly. Don’t you go out and pick up that stuff around your property and maybe across the street every once in a while? Oh, right, you didn’t put it there. And it really doesn’t bother you unless your kid happens to run around barefoot in your front yard and steps on the remains of someone’s empty beer bottle.

I have only lived in the US since the late 1980’s but that stuff bugs me. In Germany we used to think of America as the country where people take action, are independent and creative. Wasn’t the first man to land on the moon a U.S. citizen? Not to put it all down, but people put all sorts of ‘proud to be American’ stickers on their cars, but it seems the way most of them treat this country, the environment and often their fellow citizens expresses neglect, ignorance and small mindedness.

Sorry. Going too far. It could be so great…… But there is only one ship and if that goes down we all go with it.

Science for the non-scientist

I am a frustrated, castrated, suppressed mathematician, physicist, rocket engineer. I was born in 1960. Ok, Sputnik, was three years earlier. But when in 1968 Apollo 8 traveled around the Moon my granddad had already started giving me science books for birthdays and Christmas. The books about the U.S. space program were my favorites. From that time I have kept many notepads full of childish doodles of spaceships and astronauts.

When, on July 20 1969, just three days before my ninth birthday, Neil Armstrong set foot on the Moon I was the only one in my family who staid up late to watch the live broadcast on German TV.  Consequently, I learned all I could about the US space program. I knew all the Astronauts by name and had see-through drawings of the Saturn V internalized. There was no doubt in my mind (and my parents’) that I would become an Astronaut, a rocket engineer or at least a pilot of some sort.

At one point in my teens puberty set in, the last two Apollo missions were canceled and surplus materials used in Skylab and somehow all talk of going to Mars next, or setting up a permanent moon base had gone away. Not only did the first girl I fell in love with not care for me but I was old enough to be asked “So, do you know what you want to be when you grow up?” At that time I started to realize that this question was somehow linked with money. While I had always been interested in Physics, Chemistry and Mathematics I just wasn’t able to get good grades in these subjects.

Around age 14, by sheer coincidence, I started playing guitar and just a few months later I played my first gig and got paid for it. Not much but enough to encourage me to pursue music. My interest in science and engineering never went away, With proper guidance I might have finished Gymnasium and gone on to study – University was free in Germany, for crying out loud! But I went the artistic way. I kept some sort of contact with my scientific interests by subscribing to various magazines. TV shows about technology were still my favorites and I developed an appetite for the literature called ‘Science Fiction’. In the course of my late teens and early twenties I drifted away from pure science – while my ex-classmates became doctors, chemists and biologists – and was consuming SF pretty much exclusively. While I actually started supporting myself by teaching guitar lessons and playing gigs and recording sessions every once in while the old science connection stirred in me. But there just didn’t seem to be a way to change professions (in retrospect of course I can see many junctures at which it would have been easy to switch, old people can be so much wiser.)

In 1983 I had my first practical exposure to a real computer. A Commodore 64, when I started to work part time at a friend’s computer store. There the old passion surfaced again. Learning programming, first Basic then Assembly, was such a blast. Again, I could have easily switched careers. At that time computer knowledge was in demand. Again I missed the boat and struggled on as a mediocre musician. At least computers became a big part of my everyday life and that kept the old interest in science and technology alive.

In the mid 80s I started to become interested in more, shall we say, esoteric topics. I had discovered books about past-life regression, reincarnation, UFOs. While I don’t know if I ever really believed any of this I still consumed large quantities of books dealing with these subjects. This phase lasted roughly about 10 years until after I had relocated to the US. Out of a melange of SF books and metaphysical literature I had been reading in that decade came the strange realization that:
#1, somehow there wasn’t much of a difference between the Science Fiction and the books about reincarnation, conspiracies, etc,
#2, the metaphysics books had vastly different and conflicting views from each other about reality and I started wondering where exactly these authors had their information from
#3, I had been an Atheist for most of my life and slowly I came to the conclusion that believing in UFOs and many other ‘unproven’  supernatural claims actually falls in the same category as Religion: You believe because you have faith and not because there is evidence

Within a short few years I started reading pure science books again and started a subscription to Scientific American. And now, as I am working the exercises from the ‘Idiot’s Guide to Geometry’ and am learning about the Scientific Method I realize that I still want to be a Scientist, engineer or something like that.

And that finally brings me to the point of this blather: How can someone who is not a PH.D. contribute to Science? How can you help building a base on the Moon and landing a man on Mars without working for NASA? Ok, I can always contribute money to the Planetary Society or the Mars Society. But that’s not really what I mean (although I am a member). How can I contribute, without being a physicist, an engineer or a billionaire? Are there more people like me out there. People who were very interested in Science for a while and then the needs of a job and family forced them unto a different path?

It now seems to me that one of the biggest things would be a community for people like me. Not quite geniuses and not quite idiots.