EPA Currently the vast majority of energy used in buildings is from non-renewable, fossil fuel resources. On the other hand, the building sector also has the highest potential for energy efficiency. With rising demand for fossil fuels coupled with uncertainty over the availability of fossil fuels in the future, rising concerns over energy security both for general supply and specific needs of facilitiesand the potential that buildup of greenhouse gases may be causing undesirable impacts on the global climate, it is essential to find ways to reduce load, increase efficiency, and utilize renewable energy resources in all types of facilities. During a building's design and development, apply a comprehensive, integrated approach to the process, to:
Issues such as quality of indoor environment and efficiency of space use should be factored in. Thus the measures used to improve energy efficiency can take many different forms.
Often they include passive measures that inherently reduce the need to use energy, such as better insulation. Many serve various functions improving the indoor conditions as well as reducing energy use, such as increased use of natural light.
For example, trees, landscaping, and hills can provide shade and block wind. In cooler Energy efficiency, designing northern hemisphere buildings with south facing windows and southern hemisphere buildings with north facing windows Energy efficiency the amount of sun ultimately heat energy entering the building, minimizing energy use, by maximizing passive solar heating.
Tight building design, including energy-efficient windows, well-sealed doors, and additional thermal insulation of walls, basement slabs, and foundations can reduce heat loss by 25 to 50 percent.
They transmit some of this additional heat inside the building. US Studies have shown that lightly colored roofs use 40 percent less energy for cooling than buildings with darker roofs.
White roof systems save more energy in sunnier climates. Advanced electronic heating and cooling systems can moderate energy Energy efficiency and improve the comfort of people in the building. Increased use of natural and task lighting has been shown by one study to increase productivity in schools and offices.
Newer fluorescent lights produce a natural light, and in most applications they are cost effective, despite their higher initial cost, with payback periods as low as a few months. Effective energy-efficient building design can include the use of low cost Passive Infra Reds PIRs to switch-off lighting when areas are unnoccupied such as toilets, corridors or even office areas out-of-hours.
The study also highlighted the impact of higher household efficiency on the power generation capacity choices that are made by the power sector. Ground source heat pumps can be even more energy-efficient and cost-effective.
These systems use pumps and compressors to move refrigerant fluid around a thermodynamic cycle in order to "pump" heat against its natural flow from hot to cold, for the purpose of transferring heat into a building from the large thermal reservoir contained within the nearby ground.
The end result is that heat pumps typically use four times less electrical energy to deliver an equivalent amount of heat than a direct electrical heater does. Another advantage of a ground source heat pump is that it can be reversed in summertime and operate to cool the air by transferring heat from the building to the ground.
The disadvantage of ground source heat pumps is their high initial capital cost, but this is typically recouped within five to ten years as a result of lower energy use.
The use of Power Quality Analysers can be introduced into an existing building to assess usage, harmonic distortion, peaks, swells and interruptions amongst others to ultimately make the building more energy-efficient. Often such meters communicate by using wireless sensor networks.
But with the development of modern computer technology, a large number of building performance simulation tools are available on the market. Sustainable siteswater efficiencyenergy and atmosphere, materials and resources, indoor environmental quality, and innovation in design.
The following year, the council collaborated with Honeywell to pull data on energy and water use, as well as indoor air quality from a BAS to automatically update the plaque, providing a near-real-time view of performance. A deep energy retrofit typically results in energy savings of 30 percent or more, perhaps spread over several years, and may significantly improve the building value.
Energy retrofits, including deep, and other types undertaken in residential, commercial or industrial locations are generally supported through various forms of financing or incentives. Other rebates are more explicit and transparent to the end user through the use of formal applications.
In addition to rebates, which may be offered through government or utility programs, governments sometimes offer tax incentives for energy efficiency projects. Some entities offer rebate and payment guidance and facilitation services that enable energy end use customers tap into rebate and incentive programs.
To evaluate the economic soundness of energy efficiency investments in buildings, cost-effectiveness analysis or CEA can be used. The energy in such a calculation is virtual in the sense that it was never consumed but rather saved due to some energy efficiency investment being made.
Thus CEA allows comparing the price of negawatts with price of energy such as electricity from the grid or the cheapest renewable alternative. The benefit of the CEA approach in energy systems is that it avoids the need to guess future energy prices for the purposes of the calculation, thus removing the major source of uncertainty in the appraisal of energy efficiency investments.We would like to show you a description here but the site won’t allow us.
Online shopping for Energy Efficiency from a great selection at Books Store. ATCO EnergySense offers energy management services for business customers, an interactive and unique travelling classroom for communities and schools and Alberta based energy efficiency information to help homeowners save on energy costs and reduce consumption.
Federal Income Tax Credits and Other Incentives for Energy Efficiency. Under the Bipartisan Budget Act of which was signed in February , a number of tax credits for residential energy efficiency that had expired at the end of were renewed.
EnergySmart helps homes in all Boulder County communities become more comfortable and energy efficient. An expert Energy Advisor can answer your questions, help prioritize projects, connect you with qualified contractors, find and apply for incentives and low-cost financing, and make energy upgrades easier and more affordable!
Energy Efficiency. When temperatures spike, drafty windows and doors can quickly turn into rising utility bills. New energy efficient windows and doors are crucial to maintaining your home's comfort all year long, especially during the coldest and hottest months.