Star,Energy,Ratings,new,challe business, insurance 6 Star Energy Ratings - A new challenge for builders
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6-Starenergy ratingis taking effect in Western Australia on May 1st2012. The new 6 star energy efficiency regulations are the biggestchallenge for builders since the Energy Efficiency regulations werefirst introduced into the Building Code of Australia (BCA) in 2003. Althoughit is true, the stringency of the energy efficiency regulations forhouses has steadily increased since its induction; the change from 5star energy efficiency regulations to 6 star is requiring buildersand building designers to significantly modify their energyefficiency solutions and method of compliance.Energy Rating TheBackground Before6 Star Energy Rating requirements were introduced the easiest methodof compliance was to use a DeemedTo Satisfy (DTS) method.This involved a glazingcalculator which ensured the glazing requirements were met - and then asimple check box to show that the minimum amounts of insulation werebeing complied with.Throughstudies by industry group AsBuiltLearning Exchange,in conjunction with leading energy rating assessors, such asSustainabilityWA,it was shown that this method, although still available under the 6star energy rating regulations, is not the best way of compliance dueto its restrictive compliance requirements.Theuse of HouseEnergy Rating Software(HERS) to show compliance with the 6 star energy rating regulationswas found to be more cost efficient and less time consuming than theDTS method. An added benefit of using HERS software is thepossibility of the reduction in compliance costs through the use ofsolar passive design principles.Energy Rating ComplianceEnergyRating or a Building ThermalPerformance Assessmentis the most accurate and flexible method of certification. Thenew house or addition is modeled using sophisticated computerprograms. These models are analyzed and a star rating calculated.TheEnergy rating depends on:Thelayout of the home, Theconstruction of its roof, walls, windows and floorTheorientation of windows and shading to the sun's path and localbreezesAndhow well these suit the local climate.Energyconsumption by hot water systems, lights or household appliances isnot part of the rating.Otheritems that will affect a rating are:Sealing Vented down lights and gas vents will significantly affect anenergy rating Coloursof material Dark colours are better in cold climates and lightcolours are better in warmer climatesFloorcoverings Tiles show a performance gain in areas where there arehigh heating loads or where there are full height windows allowingsolar access to the tiles.Energy Ratings What thestars meanZerostarsmeans the building shell does practically nothing to reduce thediscomfort of hot or cold weather.A5star ratingindicates good, but not outstanding, thermal performance.Occupantsof a 10starhome are unlikely to need any artificial cooling or heating.Choosing an Energy RatingAssessorTheright energy rating assessor can make a big difference to thecompliance of your project. Some things to look for when choosingyour energy rating assessor are:PracticalExperience in building and construction methods to ensure costeffective solutions are recommendedExperiencein a variety of House Energy Rating Software programsTheability to cover all points of the energy rating complianceincluding the insulation penetration and artificial lightingcalculations which come into effect in May 2012Theability for your energy Rating assessor to provide fast efficientservice so that it does not delay your building project
Star,Energy,Ratings,new,challe