Home > Weight Management > Extreme Energy

Extreme Energy

Extreme Energy

Survey of Energy Efficient construction methods

When we talk about energy efficiency, we must first understand some basic definitions energy efficient building materials determined by how it handles heat, how heat transfers through materials and how well the materials hold or store heat. Remember that heat always moves from warm to cold, so during the summer, if the outside temperature is warmer than the temperature inside a house, transfers heat through the walls from the outside in winter during the other hand, if the temperature inside is warmer than the outside, transfers heat from inside the house out.

Clear wall R-values
Clear wall R-value calculations are not into account the effects of additional construction such as windows, doors, exterior wall corners and how the roof joins the walls. When you factor, typically the R-values fall of which is indicated as R-Claro Wall Securities. Clear wall R-values and thermal performance tests are determined by a solid wall (complete with your system confinement), usually a section of 8 feet x 8 feet, with no openings for doors and windows.

Whole wall R-values
Clearly more accurate is the entire wall system R-value rating. In this system, not only the thermal efficiency of the test wall, as is typical on the interface details. These include wall to wall corners, wall-to-ceiling, wall to floor, wall to the doors and the connections of the wall-to-window. Why include these details? Because energy efficiency is lost at these points of construction and the inclusion of these elements provides a system of nominal R-value more accurately. (Although take the time to record these joints during construction to help reduce some of hte heat loss significantly.)

Thermal mass
To add to the confusion we have to consider the thermal mass, perhaps the energy problem more confusing to engineers, contractors and today homebuyers. thermal mass ratings are determined by measuring building materials / wall unit with energy efficiency with other layers of material attached to the wall, ie, particle board, drywall, plaster. Measuring the energy efficiency of an "R stated" material value, combined with layers of other materials to increase the value of energy, is often called "mass higher R-value." There are a number of combinations of materials used in construction, and thermal mass and efficiency of R-value varies depending on how they are used in the region of the country (for considerations weather). How efficient is a system and the amount of energy consumption is reduced depends on how fast heat transfer through materials, how well materials have heat and outdoor temperature fluctuations. Attention to details like the windows you choose, like low e-thermal windows that are double color panel, is as important as the value of R on the walls. In fact, the heat loss or gain much more, up to 48%, is through windows, not walls!


Moreover, according to U.S. Department of Energy, Energy Efficiency, your home should be adequately isolated from the roof to the ground. This includes the following areas:

Attic spaces
Attic access doors to the unfinished attic
walls the knees of the penthouses
Ducts in unconditioned spaces
Cathedral ceilings
Exterior walls
Floors above unheated garages
Crawl spaces
floor slab-on-grade.

Let's look at some of the current options in construction Today …

Masonry and concrete for housing Numerous isolation methods and new insulation systems categories in the market with different values of R. Standard 8 "hollow block R-value is 1.75, which alone is not enough R-value of energy efficiency. The addition of external insulation, insulation integral or internal insulation can be added to block rule to be very energy efficient. There are several ways to incorporate insulating foam such as polystyrene, or polyisocyanurate polyiso and polyurethane concrete blocks. The cores of hollow concrete blocks can be filled by pouring and / or injection of loose stones liquid foam or foam. Some manufacturers make concrete blocks to fit rigid foam inserts.

Stallion Wall Construction using wood or metal studs … The outer wall is a large part of total isolation of the package. In the outer walls, a 2×6 wall until offers 5.5 "of insulation. With the use of 2×6 spaced 24" c / c, not only is the depth of the cavity wall, but increased the width of the cavity also increases. Asparagus conduct more heat than isolation, and that extends through the wall cavity and has a lower R value. Thus, 2×6 construction fewer studs in the exterior wall and less heat is conducted through the wall. The following site has a good table R-values that describe various methods of construction Pedigree http://www.homeenergy.org/archive/hem.dis.anl.gov/eehem/99/991110.html

Isolation concrete form (ICF) ICF construction uses reinforced concrete as structure and where the insulation does double duty also as permanent stay in place formwork for concrete during placement is a very attractive option for energy efficient buildings walls. The insulating material, usually expanded polystyrene (EPS) offers a variety of state of external finishes last generation, as is the facade, brick, cultured stone, stucco, and so on. Constructed from expanded polystyrene and stacked like building blocks to form the exterior walls of a house, the forms are reinforced with steel and filled with concrete. The blockade of the forms and set each other to provide seamless "foundation beams, fully insulated, reinforced concrete walls. Window and door openings of any size are possible. Because of the triple insulating nature of these forms, ICF are extremely energy efficient. The R-value insulation, along with the thermal mass of concrete, and disposal air leakage, makes an R-40 energy rating or higher.

Structural Insulated Panels (SIP) SIPsconsist two outer layers and a core interior insulation. Most structural panels today use plywood or oriented strand board (OSB) and the skins. OSB is used because commoly is to what is available in large 12 feet by 36 feet of expanded polystyrene (EPS) is the most commonly used basic insulation. Polystyrene extruded (XPS), commonly known as Styrofoam, polyurethane foam and isocyanurate are also used as the inner core, but it is mainly used EPS interior as fundamental. As can be seen in the table below, EPS has an R value of 5.00 inch. Many SIP manufacturers allow you to select the thickness of the panels for your home ranging from 4 "to 12". SIP is increasingly common in the construction of modular homes, as they have shown extreme energy efficiency, are much stronger than wood-framed houses and the outer envelope can often be built in less than a week! If you are a contractor or engineer who wants to get http://www.sipweb.com/monitor/bc_main.asp see more information about SIP. Some manufacturers choose to use polyurethane and isocyanurate as the insulating material. Elder polyurethane and isocyanurate SIPs have a nominal value of R around R-6 to R-7 per inch (2.5 cm) thick. Polyurethane / isocyanurate panels, although more expensive, are more resistant Fire and water-vapor diffusion of EPS, and isolated in 30% to 40% better than EPS or XPS, by thickness.

Precast concrete wall construction … Precast concrete walls used to use high-strength concrete, typically 5,000 psi with steel reinforcement and fiber. With a price range of $ 55 – $ 65 per foot linear wall, prefabricated systems are competitive with other foundation walls, particularly when costs are examined as a package that includes footings and sub-slab drainage. The precast concrete walls have built long-term isolation increasing energy efficiency. They are smart, with convenient features like built-lets access for wiring and wood nailers for drywall treated. The walls have been built in a foot that is placed on a stone base. The average R-Rating I found doing a search was 12.5.

In general, there are a lot of options you have to do … Want to spend more money on front for an energy efficient home, or foot growing energy costs. Many of the new construction methods dramatically improve the speed at that can build houses. Discuss these options with your contractor and / or engineer to know what is best for your specific purpose and the area where you live.

The following website, you will find a table with typical R-values of construction materials. http://www.coloradoenergy.org/procorner/stuff/r-values.htm

About the Author

Dr. Snipes received her PhD in Counseling and Education from the University of Florida. She is an ordained
Christian minister
. Currently she runs two online continuing education sites
Continuing Education for Engineers
online continuing education for counselors, addictions professionals and social workers

The Universe – Extreme Energy Part 1

[affmage source=”ebay” results=”24″]Extreme Energy[/affmage]
[affmage source=”amazon” results=”8″]Extreme Energy[/affmage]
[affmage source=”clickbank” results=”6″]Extreme Energy[/affmage]

  1. No comments yet.
  1. No trackbacks yet.
You must be logged in to post a comment.