Images/BldgSim.jpg' alt='Energy Plus Energy Simulation Program' title='Energy Plus Energy Simulation Program' />Low energy house Wikipedia. A thermogram compares the heat radiation of the windows and walls of two buildings sustainable low energy passive house right and conventional leaking house leftA low energy house is any type of house that from design, technologies and building products uses less energy, from any source, than a traditional or average contemporary house. In the practice of sustainable design, sustainable architecture, low energy building, energy efficient landscaping low energy houses often use active solar and passive solar building design techniques and components to reduce their energy expenditure. Energy Plus Energy Simulation Program' title='Energy Plus Energy Simulation Program' />TechLabs sells educational and training equipment to schools and universities. We have a diverse selection resources to teach tomorrows technology today. Our. The thirdannual Smart Cities Week D. C. attracted 1,300 people from around the world to discuss ways smart infrastructure enables smart cities. Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services. EQUEST the QUick Energy Simulation Tool Imagine a building energy simulation tool comprehensive enough to be useful to ALL design team members, yet so intuitive. The increased awareness of the importance of energy in our society and the growing concern over future sources of energy have led to inquiries as to how much energy. Medicare is the largest health program in the federal government, primarily covering almost 55 million Americans over age 65 and 9 million under age 65 with permanent. Wincc Flexible 2008 Sp1 For Windows there. EnergyPlus is a whole building energy simulation program that engineers, architects, and researchers use to model both energy consumptionfor heating, cooling. General usageeditThe meaning of the term low energy house has changed over time, but in Europe it generally refers to a house that uses around half of the German or Swiss low energy standards referred to below for space heating, typically in the range from 3. Whma to 2. 0 k. Whma 9,5. Btuftyr to 6,3. Btuftyr. Below this the term Ultra low energy building is often used. The term can also refer to any dwelling whose energy use is below the standards demanded by current building codes. Because national standards vary considerably around the world, low energy developments in one country may not meet normal practice in another. National standardseditIn some countries the term relates to a specific building standard. In particular, these seek to limit the energy used for space heating, since in many climate zones it represents the largest energy use. Other energy use may also be regulated. The history of passive solar building design gives an international look at one form of low energy building development and standards. In Germany a low energy house Niedrigenergiehaus has a limit equivalent to 7 litres of heating oil for each square metre of room for space heating annually 5. Whma or 1. 5,8. Btuftyr. In Switzerland, the term is used in connection with the MINERGIE standard 4. Whma or 1. 3,3. Btuftyr or the Minergie P equivalent to the Passivhaus. In comparison, the German Passivhaus ultra low energy standard, currently undergoing adoption in some other European countries, has a maximum space heating requirement of 1. Whma or 4,7. 55 Btuftyr. A sub 1. 0 passive house is under construction in Ireland that has an independently evaluated PHPP Passive House rating of 9. Wm. 2year. Its form of construction also tackles the issue of embodied energy, which can significantly distort the lifecycle CO2 emissions associated with even low energy use houses. North AmericaeditIn the United States, the ENERGY STAR program is the largest program defining low energy homes and consumer products. Homes earning ENERGY STAR certification use at least 1. International Residential Code, although homes typically achieve 2. In addition, the US Department of Energy launched a program in 2. US. Currently, participating builders commit to constructing new homes that achieve 3. Zero energy and energy plus buildingseditBeyond ultra low energy buildings are those that use, on average over the course of a year, no imported energy zero energy buildings or even those that generate a surplus energy plus houses both of which have been and are being successfully built. This can be achieved by a mixture of energy conservation technologies and the use of renewable energy sources. However, in the absence of recognized standards, the mix between these and consequently the energy use profile and environmental impact of the building can vary significantly. At one end of the spectrum are buildings with an ultra low space heating requirement that therefore require low levels of imported energy, even in winter, approaching the concept of an autonomous building. At the opposite end of the spectrum are buildings where few attempts are made to reduce the space heating requirement and which therefore use high levels of imported energy in winter. While this can be balanced by high levels of renewable energy generation throughout the year, it imposes greater demands on the traditional national energy infrastructure during the peak winter season. Low energy technologyeditIntroductioneditLow energy buildings typically use high levels of insulation, energy efficient windows, low levels of air infiltration and heat recovery ventilation to lower heating and cooling energy. They may also use passive solar building design techniques or active solar technologies. These homes may use hot water heat recycling technologies to recover heat from showers and dishwashers. Lighting and miscellaneous energy use is allieviated with fluorescent lighting and efficient appliances. Weatherization provides more information on increasing building energy efficiency. Passive Houses are required to achieve a whole building air change rate of no more than 0. Pa minimum. On site blower door testing by certified testers is used to prove compliance. A significant feature of ultra low energy buildings is the increasing importance of heat loss through linear thermal bridging within the construction. Failure to eliminate thermal pathways from warm to cold surfaces bridges creates the conditions for interstitial condensation forming deep within the construction and lead to potentially serious issues of mould growth and rot. With near zero filtration losses through the fabric of the dwelling, air movement cannot be relied upon to dry out the construction and a comprehensive condensation risk analysis of every abutment detail is recommended. Improvements to heating, cooling, ventilation and water heatingeditPassive solar design and landscapeeditPassive solar building design and energy efficient landscaping support the low energy house in conservation and can integrate them into a neighborhood and environment. Following passive solar building techniques, where possible buildings are compact in shape to reduce their surface area, with principal windows oriented towards the equator south in the northern hemisphere and north in the southern hemisphere to maximize passive solar gain. However, the use of solar gain, especially in temperateclimate regions, is secondary to minimizing the overall house energy requirements. On the other hand in hot climates temperatures excess heat can create uncomfortable indoor conditions. Passive alternatives to air conditioning systems such as temperature dependent venting have been shown to be effective in regions with cooling needs. Other techniques to combat excessive solar heat gains include Brise soleils, trees, attached pergolas with vines, vertical gardens, green roofs among others. Low energy houses can be constructed from dense or lightweight materials, but some internal thermal mass is normally incorporated to reduce summer peak temperatures, maintain stable winter temperatures, and prevent possible overheating in spring or autumn before the higher sun angle shades mid day wall exposure and window penetration. Exterior wall color, when the surface allows choice, for reflection or absorption insolation qualities depends on the predominant year round ambient outdoor temperature. The use of deciduous trees and wall trellised or self attaching vines can assist in climates not at the temperature extremes. Lighting and electrical applianceseditTo minimize the total primary energy consumption, the many passive and activedaylighting techniques are the first daytime solution to employ.