“Glazing is the weak point in the thermal envelope if you’re using standard glass and a standard frame like aluminium.”
Wheeler says a good rule of thumb to follow is to have windows making up no more than 25 per cent of the total floor area of the house, and to place them carefully.
“Once you go beyond that 25 per cent there will be a heat exchange through that house that no amount of insulation in the walls and roof will compensate for,” he says. “You need to look at position, orientation, size and how the windows open. And if you’re going to glaze more than 25 per cent, upgrade your glass.”
Australian Window Association CEO Tracey Gramlick says up to 40 per cent of a home’s heating energy can be lost through windows and up to 87 per cent of its heat gained through them, so it’s well worth investing in energy-efficient windows.
read more at: http://www.domain.com.au/news/how-to-make-windows-work-with-an-energyefficient-house-20161128-gswij5/
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Some utility rate increases linked to the shutdown of the San Onofre nuclear plant would be put on hold if the California Public Utilities Commission approves a newly proposed plan.
In late October, the agency is scheduled to consider whether to withhold reimbursement of $69.4 million to San Diego Gas & Electric for replacement power purchased from when the plant became idled in January 2012 until its permanent retirement in June. Such a withholding would limit SDG&E rate increases to $118 million for covering standard power-procurement costs this year, according to a statement from the commission.
How will higher utility bills effect the value of your home? Contact the appraisers at www.scappraisals.com for your home value questions. The appraisers at Southern California Appraisal Services are the forerunners in green property and energy-efficient real estate appraisals.
San Onofre was closed because of rapid wear on steam generators that were replaced in 2010 and 2011. The heat exchangers were supposed to extend the life of the plant, but the premature wear affected thousands of generator tubes carrying radioactive water.
The commission is conducting an investigation to determine who should pay for the San Onofre expenses since the facility was shut down. SDG&E, which owns a 20 percent stake in the facility, seeks to recover $808 million in assets from customers — on top of costs for attempted repairs and initial replacement power.
Eventually, the commission plans to consider whether it is justified and reasonable for utility customers to shoulder costs associated with the plant’s breakdown and permanent closure. The agency could call for a rebate and shift some expenses to utility stockholders.
Read more at: http://www.utsandiego.com/news/2013/sep/24/proposal-defer-nuclear-costs/
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- Check pipes before insulating. Don’t insulate until any leaks are repaired and pipes are properly supported.
- To be effective, insulation must touch the pipe. Gaps between the insulation and the pipe allow cold air to penetrate, which increases the chance of freezing.
- Don’t take short-cuts where insulation is difficult to install. Any spot that’s left uncovered or inadequately covered could freeze.
Types of Pipe Insulation Two types of pipe insulation are commonly used:
Unfaced fiberglass batts work well on pipes in areas such as attics and crawlspaces where people won’t often be present. Tubular foam is a better choice for areas where people may be present. These areas would include garages, utility rooms and basements. Match the inside diameter (ID) of the insulation to the outside diameter (OD) of the pipe.
Spiral wrap tape, thin strips of fiberglass and “bubble” products are not acceptable because the insulating value is too low.
Minimum R-value requirements are listed below.
Read more at: http://oikos.com/library/weatherization/pipe/pipes.html