photovoltaics | AiDomes

Heating & Air Conditioning an Ai dome.  Ai dome winner of Energy Star Award.

snow Kolb beautiful

American Ingenuity 40′ dome home linked to 27′ garage earned Energy Star rating.

Typical AC Ductwork Design:  The following info pertains to the chart below:

An air handler is the inside unit that forces cool air into the house. An air handler needs to have a plenum if installing two or more intakes.  A Plenum is a foam box made of special materials that are flame retardant designed for connecting ductwork at the bottom or top of the air handler also for splitting ductwork.  Cut a hole in the plenum to accept ductwork.  It could be done for an air intake grate or exhaust vents.  When installing an air intake in the second floor (Intake is where you put your Air Filter.  It is easier to put the air intake grate in a second floor knee wall.  Knee walls are usually large enough to support multiple duct work.  The grate size will be determined by the size air filter you want to install. Intake ductworks are about 10 to 12 inches large. Exhaust ductworks are usually 6 inches. (Exhaust is where the air comes out of vents in your walls, ceilings and even floors).  Ductwork can be run in interior walls or drop ceilings between floor joists and in knee walls.  If running ductwork in interior framed walls, the walls may need to be wider than normal to support the ductwork.  It is recommended that you install two Intakes one in the upper floor of your house and one in the lower floor of your home. The upper Intake will remove humidity and hot air and dust from the upper floors. The closer you have the Intake to a room, the cooler that room will be. The lower intake is doing the same job as the upper intake removing dust, moisture and hot air. Air needs to exit out of each room, your HVAC subcontractor may have you put a grill above a door or have a space below your door for air to exit rooms.   Mini-split ductless heat pumps can be installed in the dome.

 

AC 2

 

Where are the AC and Heating Ducts installed in the dome? The ducts can be run in the interior walls, second floor joists, and behind the second floor perimeter knee wall.  Above is a HVAC diagram showing typical way system works.  Contact your local HVAC subcontractor for specific needs and air flow to rooms in your dome home.  Or ductless AC/heating units are available.

Ai does not specify which heating and cooling units to use within its domes because the needs vary by regions of the country. Heating and cooling systems that are practical or common in your area can be used in the dome. We have had clients use radiant heat in the floor. We have also had clients’ incorporate large spans of glass to let in the passive heat; usually this is not practical, as the dome is so energy efficient. The large amount of glass just lets in hot or cold air. Our clients have had great success with solar hot water heaters.

For a system that is best for your area, consult a local air-conditioning contractor. All types of systems will work but it would be important to consider what type of fuel is readily available, what type of units can be serviced locally and your own preferences. However, keep in mind that because of the superb energy efficiency of the dome, you can reduce the required size of your air-conditioning and heating system by about one third. Also the cost of heating and air conditioning will also be about half that of typical houses in your area and therefore the savings provided by super efficient units will be less. It is economical to select efficient systems but not very expensive systems.

Q: Are electric vents necessary at the peak of the dome as well as in the bathrooms to prevent moisture buildup?

A: Yes due to the tightness of the dome, water vapor from cooking, showering, doing laundry, breathing, etc. needs to be removed from the dome. Electric exhaust vents are installed in a vertical wall near the top of the dome, in top center of the dome, in bathrooms, in laundry room and above stove/microwave to exhaust water vapor.  In interior walls, use galvanized metal ducting that extends down the interior wall, through the floor joist and vents out under an entryway or door dormer framed wall or a hole can be cut in the concrete panel. Instructions in the Dome Kit Assembly Manual.  A heat recovery ventilator or energy recovery ventilator will probably need to be installed to remove excess water vapor. To view our web site info on heat recovery ventilators, click on HRV.

Can the smaller American Ingenuity domes be cooled or heated without central air conditioning or furnaces? Yes. The smaller sized American Ingenuity domes have such small heating and air-conditioning demands; it could be practical for you to use only a window air-conditioner and a space heater.  Please check your local building code, some building departments require a permanent heat source to be installed which does not allow a wood stove or fireplace as the permanent source.

What air conditioner size do you recommend for your domes?

34’ Dome: 1 ½ Ton

40’ Dome: 2 Ton

45’ Dome: 2 ½ Ton

48’ Dome: 3 Ton

Tell me about a ground water heat pump. A ground water (or water-to-air) heat pump is extremely efficient as it uses the constant moderate temperature of underground water to both heat and cool, instead of using outside air, it uses water from a well or underground loop to transfer heat through a concentric copper coil located inside your home. Besides being more efficient than air-to-air unit, it can produce heat when the outside temperature is below freezing.  Mini-split ductless heat pumps are available. Ask your local HVAC subcontractor what units he prefers.

Can Ai’s Domes be cooled without an air conditioner? Yes. Because the Ai dome is so super insulated, our clients who do not prefer air conditioning, have found the interior of the dome to be cooler than a conventional house.

  • Of course you would want to install windows and doors opposite of each other so that air will flow through the dome.
  • In the hot summer months, you may want to install a window AC to cool some areas and draw out moisture.
  • Standing fans can be used to move the air.
  • Install awnings out from the dormers and entryways to keep the sun from beaming into the dome.
  • To help maintain a cooler interior temperature you may want to consider installing underground cooling pipes which will bring air into the dome that has been cooled by the earth. To learn more about this read about Energy Efficiency under advantages.
  • Plus you can install pipes in the slab to run cold water through. A 45’ dome needs about 2 ½” in diameter cooling pipes that are buried 5’ deep and go out about 20’. You angle the tubes where condensation can be pumped out.

Does the HVAC diagram come with the Building Plans? No. The installation and routing of the heating and cooling ducts, electrical wiring and plumbing pipes can best be determined on site by the person making the installation. Ai has found if the layouts are included, then the inspectors require the subcontractors to follow the diagrams when the subs like to design their own layouts.

Do American Ingenuity’s building plans meet the new building codes requiring air exchangers? We are not sure what your code requires, if there is a minimal air exchange from the outside to inside, that requirement would best be fulfilled with an air to air heat exchanger sometimes called a heat recovery unit or energy recovery ventilator. These ventilation systems bring in fresh air and minimize the loss of heating and air conditioning. Please check with your local HVAC subcontractor.

What types of Ducts does your company recommend? Collapsible plastic inner and outer liners have insulating material between the inner and outer liners and a spiral wire that holds them round. Because the dome is all one cooled or heated space (no attic), the ducting does not need to be insulated. Sometimes building departments require insulated ducts.

How do you move hot air from the second floor to the first floor? In a vertical wall near the top of the dome install a bathroom exhaust fan that can be turned on to move hot air to the first floor. Use dryer ducting for the exhaust fan ducting. It extends down the interior wall, through the floor joist and vents out on the first floor. See above description describing possible  HVAC ductwork diagram.

How can I calculate the BTU requirements for Ai Domes? You can calculate the approximate amount of heat required for the different size Ai domes by:

  • Determine the difference in temperature from outside to inside. Say inside is 70 outside is -30, T= 100
  • Look up the Exterior surface of the dome you want to calculate (on back side of Price list) 40’ dome =2,645
  • On the bottom of same Specifications sheet get the K value for the insulation. 9″ K=0.0278
  • Multiply all of these numbers together. 100 x 2,645 x 0.0278 = 7,351 is the BTU’s required to make up what escapes through the dome surface.
  • Do the same thing with the windows. T= same, Add up the areas. For a double pane use K=0.3 or what ever the mfg. specifies.
  • Do the same thing with the floor and its insulation.
  • Add the three BTU values together and that is the approx. heat loss.

Heat & Cool Smartly: Save Energy, Save Money

Replacing old cooling and heating equipment with more efficient, ENERGY STAR qualified equipment is one way to save energy and money. However, your home’s heating and cooling equipment is part of a larger system. Heating and cooling your home smartly can include properly maintaining your existing equipment, using a programmable thermostat, finding and sealing air leaks, tightening up your ducts, and more. To view governments Energy Star web site, click on Energy Star.

Repair or Replace?
Changing out old cooling and heating equipment with ENERGY STAR qualified models can cut your annual energy costs by 20 percent.  Learn more about each cooling and heating product from links in the left column.

Finding the right contractor: 10 tips

10 Tips for Hiring a Heating and Cooling Contractor

1. Study up – Find out about license and insurance requirements for contractors in your state. And before you call a contractor, know the model of your current system and its maintenance history. Also make note of any uncomfortable rooms. This will help potential contractors better understand your heating needs.

2. Ask for referrals – Ask friends, neighbors, and co-workers for contractor referrals. You can also contact local trade organizations for names of members in your area.

3. Call references – Ask contractors for customer references and call them. Ask about the contractor’s installation or service performance, and if the job was completed on time and within budget.

4. Find special offers – A heating and cooling system is one of the largest purchases you’ll make as a homeowner. Keep your costs down by checking around for available rebates on energy-efficient ENERGY STAR qualified heating and cooling equipment. Begin your search at www.energystar.gov.

5. Look for ENERGY STAR – ENERGY STAR qualified products meet strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and offer significant long-term energy savings. Contractors should be able to show you calculations of savings for ENERGY STAR heating and cooling equipment.

6. Expect a home evaluation – The contractor should spend significant time inspecting your current system and home to assess your needs. A bigger system isn’t always better; a contractor should size the heating and cooling system based on the size of your house, level of insulation, and windows. A good contractor will inspect your duct system (if applicable) for air leaks and insulation and measure airflow to make sure it meets manufacturers specifications.

7. Get written, itemized estimates – When comparing contractors’ proposals (bids), be sure to compare cost, energy efficiency and warranties. A lowest price may not be the best deal if it’s not the most efficient because your energy costs will be higher.

8. Get it in ink – Sign a written proposal with a contractor before work gets started. It’ll protect you by specifying project costs, model numbers, job schedule and warranty information.

9. Pass it on – Tell friends and family about ENERGY STAR. Almost one-quarter of households knowingly purchased at least one qualified product last year, and 71% of those consumers say they would recommend ENERGY STAR to a friend. Spread the word, and we can all make a big difference.

10. Get the ENERGY STAR Guide – For complete information on keeping your home comfortable year-round, get the ENERGY STAR   1-888-STAR-YES (1-888-782-7937).

Maintain your Equipment: A Checklist
Just as a tune-up for your car can improve your gas mileage, a yearly tune-up of your heating and cooling system can improve efficiency and comfort.

Use a Programmable Thermostat
Use an ENERGY STAR qualified model to adjust the temperature of your home when you are home or away. With proper use of the four pre-programmed temperature settings, you can save about $100 each year in energy costs.

Duct Sealing
It’s common to find gaps between duct joints, whether a home is new or old. Seal and insulate ducts that are exposed in areas such as your attic or crawlspace to improve your system’s efficiency and your own comfort.

Seal Air Leaks and Add Insulation (Home Sealing)
Air leaks in your home and a poorly insulated attic can lead to significant home comfort problems and high energy bills. By properly sealing those air leaks and adding insulation, you can improve comfort and cut your energy bills by up to 10 percent.

Consider a More Efficient Ceiling Fan
Upgrade to a more energy-efficient ceiling fan. ENERGY STAR qualified models are up to 50% more energy-efficient than conventional fans, with the most potential energy savings coming from those that include lighting. In the winter, set your fan to turn in the clockwise direction to help efficiently distribute warm air throughout your room.

Help Protect the Environment
Individual actions at home can add up to a lot of pollution prevention. If just one in ten households bought ENERGY STAR heating and cooling products, the change would keep over 17 billion pounds of pollution out of the air.

Aeromax Corporation

The following information came from Aeromax Corporation’s web site:

“My company manufactures wind turbines which are used as a residential alternative energy source and supplement. I would like to speak with you about the use of a Lakota Wind Turbine in your projects. Many alternative homes use photovoltaics as a power supplement, but it could cost almost $20,000 in solar panels to equal the power of one Lakota. Contact Mitch Mitchem, Distribution Manager, Aeromax Corporation office: 928-775-0085 fax: 928-775-0803.”

Survival Center

www.survivalcenter.com

They have most everything: from alfalfa seeds and band aids to solar powered items, radiation meters to underground shelters. Their site states, “Consider us your personal preparedness consultants.”

Wind Generator

The following information came from the web site http://dragonflypower.com/

About Dragonfly

Dragonfly Projects

Dragonfly Wind Generator Plans, blades and links for a DRAGONFLY, low cost proven wind generator. Typical use supplies 12 v. fluorescent light, radio, and laptop for a cabin. Parts are off the shelf. Maintenance is uncomplicated.

dragon fly wind turbine

 

 

 

 

Dragonfly Wind Electric

 

snow dome northey good

An American Ingenuity Dome utilizing photovoltaics

Exterior3 Mathes photo cells

Exterior2 off grid collar MESA2

Collar Dome Built In Utah Utilizing Photovoltaics

Q: Can photovoltaics be used with your dome?

A: Yes. The magazine, Home Power has dedicated more than 100 issues to home-scale renewable energy and sustainable living solutions. That means they have had comprehensive coverage of solar, wind, and microhydro electricity, home energy efficiency, solar hot water systems, space heating and cooling, green building materials and home design, efficient transportation, and much, much more. Whether you’re a do-it-yourselfer or not, off-grid or on-grid, Home Power can help you make informed decisions about your home energy use. They provide extensive product information, homeowner testimonials, buyer advice, and “how-to” instructions.

The following Home Power article describes the Moab, Utah dome home built by the Collar’s.

What do you need when you are going to live in a high desert (7,500 ft. elev.) 40 miles from the nearest town with the winters reaching down 20 degrees below zero? That is where Jim & Mary Collar planned to build their solar retirement home. To extend electric power to their home site would cost $22,000 (in 1996) so the Collars decided to produce their power using photovoltaic solar cells with a back up generator. Their primary source of heat would be their fireplace.

In 1995 after researching many alternative-building methods, they found their home, an American Ingenuity 45′ Dome House and 30′ garage. Our dome kits were selected for their strength, energy efficiency and affordability. They selected subcontractors for the construction of their two domes with Mary being the general contractor. Jim was commuting 40 miles to his job but on evenings and weekends they could work together. They were asked by the state of Utah to participate in “Utahs’1998 Tour of Innovative Homes” which is in conjunction with the American solar Energy Society’s National Tour of solar Homes.

Ai converted the Home Power four page article into four separate pdf pages. 

Click on each page to view it.

National Center for Photovoltaics (NCPV)

US Department of Energy Research and development, and information source on photovoltaics. Website includes a virtual library of online reference materials. The Center brings people together through conferences and forums to share information and concerns. And the Center provides and develops various forms of information for people with a wide range of solar and wind needs. Click on Solar.

The Florida Solar Energy Center seeks to provide the general public and professionals with accurate and current information about alternative energy use and production.

Home Power Magazine

If you are considering an alternative power system in your dome the magazine Home Power offers many solutions. They can be reached at their web site http://www.homepower.com

 

Kolb dome prius 3

American Ingenuity Dome Owners care about our environment. 

The Build Energy Efficient Homes & Tend to Drive Fuel Saving Vehicles.

Kolb exterior 40 27 P7120015

Kolb 40′ Dome Home Linked to 27′ (two car garage dome) – earned Energy Star

Q: What Energy Star rating has the American Ingenuity dome received?

A: A 5+ Energy Star rating, the highest rating given. Energy Star is a joint program between the Environmental Protection Agency and the United States Department of Energy that is designed to promote products, buildings and homes that use less energy without sacrificing quality.  The Kolb Dome Home earned the Energy Star Rating.

In the past American Ingenuity has received the Energy Star endorsement for our completely constructed dome homes. Ai domes not only qualified but far exceeded their efficiency standards that are derived from the Model Energy Code. In an American Ingenuity dome you can receive a 5+ Star rating, the highest rating given. When financing this rating will entitle you to the maximum benefits, like reduced fees and lower interest rates.

The Energy Star Program will not give a rating on a Building Kit. The rating is for a newly finished home. Since American Ingenuity manufactures dome building kits and rarely constructs finished domes, we no longer have an Energy Star rating.

However our clients can participate in this program. Energy Star’s web site is http://www.energystar.gov

Q: What do I need to consider when searching an ENERGY EFFICIENT house?

A: To best answer that question let’s examine how most of the heating and air conditioning is lost in a house. The major loss is usually through the walls and ceiling with the amount of loss directly proportional to the combined area. Solution, minimize the surface area of the house. Domes have about 20% to 40% less surface area than an equal size conventional house. This results in an equal and significant improvement in the efficiency.

The insulation value of the walls and ceilings are important but you cannot just compare R-values. R-values provided for conventional houses represent optimum conditions. They do not take into consideration that the insulation is interrupted by the framing, has voids, settles and absorbs moisture. In our domes the E.P.S. insulation is continuous, rigid and it will not settle or absorb moisture. R-28 E.P.S. insulation in our dome exceeds the performance of R-45 fiberglass in a conventional house.

Blower tests repeatedly show that wood frame houses loose 10-25% of their heating and AC through the numerous leaks in the walls, attic, electrical outlets, etc. It is very difficult to seal these leaks due to their volume and inaccessibility. American Ingenuity domes are sealed airtight on the outside of the insulation; therefore, eliminating the energy absorbing leaks.

The insulation on Heating and AC ducts is usually only R-6 to R-8. In addition when the fan is running, the air in the ducts is under pressure and thus the ducts are more inclined to leak. Ducts in the attic, or anywhere outside the insulation envelope, account for sizable energy loss. In American Ingenuity domes all of the ducts are inside the insulation; therefore, there is zero loss in the ducts even if they leak and are not insulated at all.

If you add up the potential energy savings of American Ingenuity dome living, you will understand why our dome owners often claim savings in excess of 50%.

Q: How does your insulation R-value compare to other wall R-values?
A:
The following are comprehensive wall values based on the average value of the complete wall. For example the comprehensive R-value:

  • 2×4 solid wood with 3 1/2″ fiberglass is about R-8
  • Concrete Block, with 3/4″ air, 3/4″ Celotex is about R-9
  • 2×6 Solid wood construction with 5 1/2″ fiberglass is about R-11
  • 2×4 solid wood with 3″ urethane is about R-13
  • The wall value of our standard 7″ thick E.P.S. insulation is R-28 which is comparable to 11″ of fiberglass batting

Q: Should I be concerned about moisture and dampness?
A: Yes
. Moisture is added inside a house as a result of washing, cooking, laundry, showers, etc. an Exhaust Fan is installed in the top center of the dome along with exhaust fans in each bathroom, for stove, microwave and clothes dryer. To bring fresh air into the house, research either a heat recovery ventilator or an energy recovery ventilator.  Click on Heat Recovery Ventilator to learn more.

Q: Does thermal mass effect energy efficiency?
A:
No. Generally speaking, in a home, thermal mass is the amount of stuff inside the house that retains heat. Although thermal mass accounts for the fact that some things have a greater “thermal capacity” to store heat than others, to understand its effect you can think of it as the total weight of everything contained in the house.

With more thermal mass (heavy stuff) inside your house more heat will have to be added or removed to change the temperature. Expressed another way, if heat is not being added the temperature will be slower to change.

Does Thermal Mass effect the energy efficiency of the house? No.

As heat in the house is lost through walls, windows, etc. the temperature drops. The thermal mass releases (loans) heat into the house slowing down the temperature change. When the heating system turns on, it must replace heat lost to the outside and it must also replace (pay back) that heat given off by the thermal mass. There is no long term gain or loss, all of the heat given off by the thermal mass must be replaced. The amount of heat required to maintain the temperature inside a house is solely dependent on the amount of heat that escapes to the outside.

All houses have walls, floors and usually fixtures, appliances and stuff that will retain heat. A large amount of thermal mass can cause long on/off cycles of the heating system when shorter cycles would stir the air more frequently providing more comfort and uniform temperatures inside. The recent generation of thermostats are a proven money saver by lowering the inside temperature (which lowers the heat loss to the outside) during those hours you are away at work, etc. A large thermal mass makes it much harder to change the temperature; therefore, reducing the savings.

During the summer while using AC (substitute cold for heat) the effect remains the same.

Q: I see that American Ingenuity is no longer manufacturing skylight panels. What lighting methods do you recommend?

A: Over the years American Ingenuity has accumulated information about the skylights and has determined that skylights are not the best method to bring light into our dome structures. Rather than offer an option that we feel is not beneficial, American Ingenuity has decided to remove this item as an option on our dome kits.

The most efficient way to add interior light is to install first floor entryways and max out second floor window dormers and or install second floor door dormers. Instead of installing a door install a tall window. This way when double paned glass gets moisture between it, you or your handyman can remove the window and tarp the dormer so no rain will come in while the window is being repaired. The dormers also provide an awning to protect the window. If you purchase windows that can be opened (with a pole or electrically for inaccessible windows); this would be an additional way to get fresh air into the dome.

There are five specific locations on the second floor where window dormers or door dormers can be installed. If selecting an existing plan, Ai can let you know where additional dormers can be installed. Or on a new custom plans design you can see where they can be located on the floor planner.

If your master suite is on the first floor and an entryway is designed in the suite, there will be ample light coming in through windows installed in the entryway. Once your dome kit is assembled (but not finished), you can better determine if more light is desired by standing inside the unfinished dome. At this point install solar tubes; they can be added into the panels during the finishing of your shell. A hole can be cut into any panel; just do not cut within 8” of the center of a seam.

Solar tubes unlike traditional skylights, are designed to control the problematic aspects of sunlight. They reduce glare and inconsistent light patterns. They also screen infrared rays that can overheat interiors as well as ultraviolet rays that can fade furniture and fabrics.

snow dome northey good

American Ingenuity Dome utilizing photovoltaics

Q: Can I use alternative power sources with my American Ingenuity dome?
A:
Yes. By providing your own Alternative Power you can live in a remote location (less expensive land) and still have all the amenities of a developed area. The alternative power systems typically consist of a power source, storage device and conversion systems. Most systems use photovoltaic cells but is some cases gasoline or diesel engine generators or wind or water driven generators are practical. The storage device is usually large batteries. The conversion system allows you to have 110 volts AC and use conventional appliances. The technology is very refined and the systems are top notch.

The cost of the system will depend directly on the amount of power that you will need. By first investing in an energy efficient house you will reduce your power demand and save money. If you are considering an American Ingenuity dome home you couldn’t make a better choice and you will be doing your part to conserve power and lower green house emissions.

If you are also connected to the local power grid, you will not need batteries for backup and in most cases you get paid for putting power back into the system.

If the cost of the system is included in the home financing it can be paid off with a little higher monthly mortgage payment. Not having an electric bill may even it out.

Utilizing an alternate power source does have a few drawbacks: COST: while systems are getting more affordable they are still expensive. It is still less expensive to buy power from mass produced power companies unless you are far from the power lines. MAINTENANCE and RELIABILITY: Most systems are very reliable but occasionally they need attention. Several of our dome owners have alternative power systems and are very satisfied with the results.

Click on the following to learn more:

If you are considering an alternative power system in your dome the magazine Home Power offers many solutions. They can be reached at their email address hp@homepower.com or at their web site http://www.homepower.com

PHOTOVOLTAIC EXPERTS & SOLAR HOT WATER PANELS:

Solar Panels: Solar Hot Water panels can be designed to set on top of the entryways or link. Anchors are buried into the entryway concrete on site. Grooves are cut in the E.P.S. insulation to lay the water pipes in and the pipes are inserted through the entryway E.P.S. before the entryway is concreted.

Other helpful web sites are:

Q: Would you give me more information about solar hot water heaters and photovoltaic panels?
A:
An article in Mother Earth News reported that since 1970, the demand for electricity has outpaced the World’s population growth by more than 20 percent. They continue and explain how we are ignoring the warning signs, that Builders are still constructing poorly efficient housing and others are overlooking the importance of renewable/alternate energy sources.

The first and most important step is to limit or reduce the energy loss in the home. An investment in good, uninterrupted, insulation and a design that does not leak the conditioned air to the outside has the best return. The savings is not only in the reduced energy loss but, also in the reduced cost of a smaller heating and air conditioning system. The next step is to replace some of the energy which is consumed. A solar water heater has proved to have quick payback in most parts of the country. In fact, sometimes they can be financed and save more money in reduced electric bills than the cost of payments. When they are paid off it becomes pure savings. Photovoltaic cells have continued to improve in efficiency and cost.

The Mathes’ dome (34′ dome home with 30′ garage dome) in Florida utilizes a solar water heater and photovoltaic panels to power their lights and refrigerator. Although, their A/C, washer, well pump and TV are still connected to the meter, their total electric bill was less than $150.00 for the year. The owner/builder also states, “This has been a wonderful experience that I would not trade for ANYTHING!”

Q: How did the American Ingenuity dome perform in the energy efficiency tests at the Florida Solar Energy Center?
A:
Superbly. Test findings were released after a yearlong study prepared for the U.S. Department of Energy by the Florida Solar Energy Center, a governmental consumer agency, in cooperation with the University of Oregon and the University of Central Florida. This study compared an American Ingenuity dome with an energy efficient, conventionally built structure and a super efficient styrofoam house designed by Dow Chemical. It came as no surprise to us that our test dome far surpassed both the conventional and Dow test houses in being THE MOST ENERGY EFFICIENT.

Although the test was conducted in a temperate locale without summer and winter temperature extremes, the American Ingenuity dome outperformed the other structures. In the summer, the energy savings for the dome exceeded 36% and during the winter, the energy savings exceeded 42%. In areas of severe cold and heat, savings would be expected to be considerably higher.

Also, the blower door test showed the dome to be 56% tighter than the conventional test structure and 29% tighter than the Dow house. In tests using infrared, thermal irregularities in the dome were shown to be insignificant.

Click on Energy Test to learn more.

You can call the Florida Solar Energy Center at 321-638-1000 or write them at 1679 Clearlake Rd, Cocoa, FL 32922.

Q: Which heating and air-conditioning system is the most practical and efficient for my location?
A:
Keep in mind that because of the superb energy efficiency of the American Ingenuity dome:

  • The required size of your air conditioning and heating system is reduced to half that of a typical home.
  • It is usually not economical to purchase super efficient systems because the energy savings is also reduced.
  • The smaller sized domes can be cooled with a window air conditioner.
  • The best heating system will vary with the area and the type of fuel that is readily available.
  • A ventilated wood stove may provide all the needed heat for even our larger domes located to cold climates.
  • A ground water (or water-to-air) heat pump is very efficient for both heat and cool. It uses the constant, moderate temperature of the underground earth to absorb or provide the heat instead of outside air. Besides, being more efficient than an air-to-air unit, it can efficiently produce heat when the outside temperature is below freezing.

Q: Can a radiant in floor heating system be installed in my dome?
A:
Yes.  Please check your yellow pages for local companies.

Click on Radiant Floor Heating to see Ai dome with radiant floor heating installed.

Q: Why are American Ingenuity dome homes so energy efficient?
A:
You can save 50-70% on heating and air-conditioning costs with your American Ingenuity dome over a conventionally built home. Some of the reasons for this superb energy efficiency are:

  • Super insulation that does not degrade with time, moisture, or compaction.
  • Spherical shape means reduced exposed surface.
  • Airtight exterior virtually eliminates energy leakage.
  • Solid thermal envelope.
  • Uniform R-value. The insulation is not interrupted with structural members (e.g. 2X4’s roof trusses). The only breaks are for doors and windows.
  • Downsized heating and cooling equipment.

Your kit comes with lifetime R-28 E.P.S. insulation (22′ with R-14).

To learn more click on Ai Dome Energy Efficiency.

To learn more about the E.P.S. insulation click on E.P.S.