Sentences with phrase «percent relative humidity»

If a 70 - degree home leaks 45 percent relative humidity air into an attic, it will condense on any surface less the 48 degrees.

Ideally, 45 percent relative humidity is good in winter.

It's a function of temperature, so, for example, the same 70 percent relative humidity results from different amounts of water in the air.

Therefore, conditions should be maintained within a building such that the critical 70 (or higher) percent relative humidity at a building envelope surface does not occur.

«Our IRMOF -74-III compounds feature different groups in the pore interior, including methyl, aromatic, primary and secondary amines, that can be covalently functionalized with primary amines and used for the selective capture of carbon dioxide in 65 - percent relative humidity,» said Yaghi, who holds joint appointments with Berkeley Lab's Materials Sciences Division and UC Berkeley's chemistry department.

Larvae require at least 50 - percent relative humidity to survive; otherwise, they dry up.

Though there are many caves, only a small number have the best conditions for climate study, including 100 percent relative humidity, constant temperatures, no cave winds, and the actual stalagmites — free of holes and decay — forming in the cave.

Those numbers tell Prather that these winter clouds are cold and heavy, — 30 degrees Fahrenheit and just over 100 percent relative humidity.

Previous attempts at low - energy water collection struggled to function below 50 percent relative humidity (roughly the average afternoon humidity of Augusta, Ga.).

Not exact matches

In the journal Optical Materials Express, from The Optical Society (OSA), the researchers reported that graphene oxide sheets treated with brief exposure to bright light in the form of a camera flash exhibited reversible bending at angles from zero to 85 degrees in response to switching the relative humidity between 33 and 86 percent.

Relative humidity was controlled at 60 percent, a typical indoor level in Singapore.

«The relative humidity was 80 percent there,» Masters says.

An environmental relative humidity of 55 to 65 percent is adequate to prevent drying of the skin in a normal newborn kitten.

A temperature of 95o F (35o C) coupled with relative humidity of 95 percent can lead to respiratory distress.

However, a relative humidity of 85 to 90 percent is more effective in maintaining kittens if they are small and weak.

However, a relative humidity of 85 to 90 percent is more effective in maintaining puppies if they are small and weak.

Fig 3 Percent of flea eggs that survive (y - axis) throughout different increments of relative humidity (x-axis), at three constant ambient temperatures.

Use a dehumidifier or air conditioner to maintain relative humidity at about 50 percent or below — they thrive in humidity.

Consensus among microbiologists gives the critical relative humidity for adverse biological activity to occur on building envelope surfaces to be 70 percent.

Where a relative humidity above 70 percent occurs at surfaces, mold growth, dust mite growth, decay, corrosion, etc. can occur.

The key is to prevent relative humidities adjacent surfaces from rising above 70 percent.

The water vapor content of the atmosphere rises by about 50 percent if atmospheric temperatures were to increase by 5C and relative humidity remained constant.

The assembly is not airtight enough and vapor tight enough from the inside to work in colder climates — unless the interior relative humidity is kept low during the coldest two months — less than 30 percent in climate zone 5 and less than 20 percent in climate zone 6 and in colder places forgeddaboudit.

The average relative humidity in cities is usually several percent lower than that of adjacent rural areas, primarily because of increased runoff of precipitation and the lack of evapotranspiration from vegetation in urban areas.

Air containing water vapour with a relative humidity greater than 100 percent, with respect to a flat surface, is referred to as being supersaturated.

In the absence of such aerosols, the spontaneous conversion of water vapour into liquid water or ice crystals requires conditions with relative humidities much greater than 100 percent, with respect to a flat surface of H2O.

With this design interior relative humidities should be kept below 60 percent in order to control surface mold.

Add «maintaining an inside relative humidity between 45 - 60 percent» to the air quality section, and convert the Btu / square foot per year measurement to kwh / square foot per year (to address air conditioning / dehumidification load) in addition to heating load.

Theoretically, it occurs when the air temperature reaches the Dew Point temperature, and the Relative Humidity (RH) is 100 percent.

The cases contain argon gas and are kept at 67 degrees Fahrenheit with a relative humidity of 40 percent to preserve the parchment papers.

Spring and fall usually bring thunderstorms and tornadoes, with a relative humidity of 83 percent in the morning and 60 percent during the afternoon.

Keeping relative humidity around 30 to 50 percent helps keep these and other allergens under control.

«In the Mid-Atlantic, the indoor relative humidity tends to level off in the mid-30s (percent range) when you air - seal a home properly,» he says.

That range puts my house below the 45 percent to 55 percent that Philadelphia - based energy expert Hap Haven says is the relative - humidity range he commonly finds in homes with mold problems.

Use a cleaning product recommended for your floors, and maintain relative humidity between 30 and 50 percent, and temperature between 60 and 80 degrees Fahrenheit, to keep them performing well for years to come.