Sentences with phrase «air changes»

Before the windows went in, it had to pass a test showing less than 0.6 air changes per hour.

The bridal dressing styles get changed within a mile just as the density of air changes with height.

The focus of this study was to evaluate the effectiveness of two different supply ventilation systems in providing adequate air change rates and uniform distribution of fresh air.

And, the thermal mass is inside an improved envelope with insulation and reduced air change, so there's almost no swing.

Expect between 8 and 12 full air changes per 24 hours.

We also have an air archive which is a resource available to any researcher to investigate air changes over time.

A professional can lower the number of air changes to as few as four an hour, saving the average homeowner about $ 500, or 20 %, annually on their energy bill.

As this is measured in air changes per hour for Passivhaus, a large building has a large air volume.

Reliant on infiltration, chimney and opening of windows for air changes.

The last time the physical look of Apple's popular MacBook Air changed was six years ago, in 2010.

A new technique could turn cement from a source of climate changing greenhouse gases into a way to remove them from the air

Controlled ventilation is also necessary to provide for the dilution of interior pollutants and for the dilution of interior moisture during the heating season by controlled air change.

They are trying to figure out how many air changes there are per hour at 50 pascals of pressure differential.

Because of the amount of insulation in passive house designs and the mechanical ventilation systems required to manage air changes, and the lack of the need for solar gain through windows in the Australian climate, they can throw out a lot of those things that I thought were in the sustainable design rule book:

A real cantina is only a real cantina if there is a vent to let the fresh air change, otherwise it is just a cool room area.

Each animal housing room is ventilated by 100 % fresh, non-recirculated air at the rate of 15 air changes per hour.

These facilities are usually modeled after buildings in the United States or Europe, but do not have the infrastructure to support HVAC equipment to provide adequate air changes and indoor environment comfort.

Photograph 2: Mold on Interior Surfaces — Interior moisture levels go up due to reduced air change and relative humidity adjacent cold surfaces rises sufficiently to support mold growth.

After Labor Day the air changes and cozy meals make their way back to the kitchen!

Some time in the past 10 days the air changed.

The air changed as we entered the forest, becoming suddenly rich and earthy, the heat of the day eased by moisture and shade.

It was a rainy one in Dallas, but I can feel the air changing (and the pollen count rising).

poses as a baby doll for fall but once the air changes it could be styled as a shirt.

Up In the Air changed my perception of the reality of airports.

Accelerating and decelerating / reversing use the trigger buttons, and when in the air this changes to moving forwards and backwards.

If you are going to get anywhere near the air tightness standard demanded of the Passivhaus certification, which is only 0.6 air changes per hour, you need to seal the gap between the units perfectly and have special tapes covering the joint.

The first blower door test result was 0.59 air changes per hour (ACH), prior to insulating the envelope, which everyone was keen to improve on as it only marginally passed the passive house standard and was prior to fitting services, which are known to increase the risk of air leaks.

For those larger than 120 sqm the rate is determined by the 0.3 air changes per hour backstop ventilation rate rather than the number of people living in the house.

Airtightness tends to be the biggest performance challenge when retrofitting an old building, and the finished retrofit here is less airtight than had been hoped — closer to 6.0 air changes per hour than the targeted 3.0.

The parcel of air changes its own temperature and pressure at the same rate as the temperature and pressure of the surroundings changes.

A diagnostic initial blower door test, done when the external envelope was completed on one of the development's show houses, took place on December 12 and delivered a worldbeating result of 0.16 air changes per hour (ACH), well inside the passive house standard of 0.6 ACH and the best result this magazine has ever noted for a masonry building.

The strategy worked, and the fabric of the new houses passed the airtightness test comfortably at 0.4 air changes per hour at 50 Pascals.

The models take into account not only how the amount of carbon dioxide in the air changes, but also how the ocean and land responds to rising temperatures and greenhouse gases.

All new homes built in the state had to show through performance testing that they had an air leakage rate of less than 7 air changes per hour at 50 Pascals of...

Airtightness is typically measured in two units: air changes per hour (ACH) and air permeability (m3 / hr / m2).

An air change is when a volume of air equal to the volume of the house exchanges with outside air.

The first and most common calculation is to convert cfm (cubic feet per minute) to ACH (air changes per hour).

With the Blower Door running and the house pressure at negative 50 Pascals, a typical existing home might leak at the rate of 15 air changes per hour, which is written 15 ACH50.

All Passive Houses must achieve a stringent airtightness requirement of 0.6 air changes per hour (ach) at 50 Pascals pressure.