Creative Energies Blog

Hello loyal blog followers, I am Allen Roth, the Creative Energies summer intern, I come from the University of Vermont and I am majoring in Environmental Studies with a focus on renewable energy.

Several weeks ago Curtis and I installed a geothermal system at a property in Lander, Wyoming. The system consisted of 6000 feet of piping strung out in 6 – 1000 foot coils. It was a big learning experience for me as it was my first geothermal install. In my studies I learned about the different loopfields and had diagrams that explained how the system worked. After working on a system myself I realize that the diagram is not enough. I think a lot of people can relate, so here is the quick and dirty. A geothermal system can be compared to a refrigerator where the pipe coils in the loopfield represent the coils on the back of your refrigerator. Instead of removing the heat from inside the refrigerator and dissipating it out the back, the coils in the ground collect heat energy available in the ground, concentrate it, and dump it into the home. The heat pump does this by circulating water through the loop field where the temperature is consistently 50 degrees Fahrenheit. This thermal energy, collected by the water, enters the heat pump where a compressor concentrates and exaggerates the temperature. Traditional ducting and plumbing systems deliver the heat throughout the home. In cooling mode it works exactly like a refrigerator, the home becomes the icebox and the heat is dumped in the ground through the coils.

We began by setting up the 6 strings in the grass next to the pit before moving them to their final resting place seven feet below the ground. We pre-constructed the loops because the high water table in the area made it necessary to pump the water out of the pit every 30 minutes! This made moving the strings difficult, but with the help of Dan, Toby, and Phil we managed to get them in without a problem. It was an experience to say the least. Trying not to fall face first in the mud every step you took, and knowing that the excavation crew above were just waiting for one of us to take a fall was quiet a thrill!

The environmental impacts of using a geothermal system are great as the main source of heat is the earth itself. These systems have a drastically smaller footprint because there is no need to burn fossil fuels to produce the heat. The heat is just being collected from the ground, and concentrated in the home. Energy consumption can be as much as two thirds of alternative heating systems. On average the savings from a geothermal system will pay for itself in 5-7 years, which makes it the most economical renewable heating system on the market.

Dan and Donna were very nice to meet.  They were both nterested in my studies and my thoughts about renewable energy and climate change. We had several discussions about what I thought the future held in regards to climate change and the move towards a more sustainable world. While we were working on their geothermal system, they both were fully involved in building their log home. This home has been designed with the environment in mind. The moderate size (2,000 sqft), and airtight construction alone makes this home more energy efficient than most. On top of these basic fundamentals the crawl space is insulated and the roof is constructed of SIPs (structurally insulated panels) (http://www.sips.org/content/about/index.cfm?pageId=7). Having a log home happens to be a dream that I have had since I was young. Watching them both work on the house really inspired me not only to keep that dream alive, but also to improve it by incorporating renewables. Adapting to the world now is a must if we plan on becoming a more sustainable world in the future. It was great to see how enthusiastic they were about their home and the different renewable systems they have installed. They mentioned how they raised their children to uphold a strong environmental philosophy, and they realized that building a home that incorporates renewables gave them an opportunity not just to preach about that philosophy, but also to apply it in their everyday lives. Aside from the geothermal, they also has us install  2.7 kW photovoltaic system earlier this spring. This system produces approximately 12 kWh per day. According to the U.S. Department of Energy, this will offset close to half of the electricity used by the average consumer. It’s clear that Dan and Donna’s decision-making has been motivated by their desire to reduce their carbon footprint. Although their efforts won’t stop climate change, it is a giant first step in the right direction.