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What else can I help you with?
Tightly packed insulation or loosly packed insulation would be more effective?
Tightly packed insulation is more effective as it reduces air movement and heat transfer, providing better thermal resistance. Loose insulation can settle over time, leaving gaps that diminish its effectiveness.
How do you calculate the surface temperature on the cold side of the 92mm of batt insulation added in place of the air space?
To calculate the surface temperature on the cold side of 92mm of batt insulation, you can use the heat transfer equation, considering thermal resistance. First, determine the thermal resistance of the insulation using its R-value, which is typically provided by the manufacturer. Then, apply the formula (Q = \frac{\Delta T}{R}), where (Q) is the heat transfer rate, (\Delta T) is the temperature difference across the insulation, and (R) is the thermal resistance. Finally, rearrange the equation to solve for the surface temperature on the cold side, accounting for the indoor and outdoor temperatures.
What is the recommended insulation thicknesses and densities for rigid polyurethane insulation for hot water piping application?
A contractor build two houses with 2 by 6 walls. He sprayed 1.5 inches of foam into the walls of one house and used standard fiberglass insulation for the other house. The house with polyurethane insulation always had lower electric bills. They believe this is do to the fact that the foam is the worlds best insulation and it seals all air leaks.
Does air resistance depends on the density of the object?
No it just depends on the size and shape of the object. An obect is more affected by air resistance if it is lighter.
Does air temperature affect air resistance?
There are two factors that influence air resistance with temperature. Air density decreases with temperature so that the force needed to push the air out of the way is decreased, thereby decreasing resistance. Conversely, air viscosity increases with temperature (unlike oil for example where viscosity decreases with temperature) so that the drag increases. Under normal conditions, the density change of air has the greatest effect and air resistance decreases at higher temperatures.
What are the benefits of using Tyvek insulation in a building's construction?
Tyvek insulation offers benefits such as moisture resistance, energy efficiency, and improved indoor air quality in buildings.
Tightly packed insulation or loosly packed insulation would be more effective?
Tightly packed insulation is more effective as it reduces air movement and heat transfer, providing better thermal resistance. Loose insulation can settle over time, leaving gaps that diminish its effectiveness.
What are the benefits of using waterproof spray foam for insulation?
Using waterproof spray foam for insulation provides benefits such as improved energy efficiency, reduced air leakage, moisture resistance, and increased durability.
Formula to calculate min insulation resistance?
insulation resistance = (2 * operating voltage +1000V) at operating temperature if you define what you mean by minimum insulation resistance maybe i could help 132,000V on the towers is usually happy with 6' of air some insulation is far better than air dry air 500v/mill thermoplastics 6000v/mill your power drill has 1/8" - 1/4" of plastic on the cord and perhaps .001" on the wire in the coils the cord gets rougher handling anything practical insulation resistance (2 * operating voltage +1000V) witch means a 1500Vdc megger is ok for 120V appliances should be safe to handle if its more than 10megohms the 1500V will bridge any pinholes or airgaps NEVER use a vom the 9v battery wont find a pinhole or an air gap ceramic on heaters and toasters has a way of letting metals diffuse in it lowering the resistance over time also it usually lowers with temperature so the resistance reading will be a lot lower while its hot
What thermal conductors have lots of air pockets?
Materials such as foam insulation, aerogel, and certain types of fiberglass insulation contain many air pockets, which help to limit heat transfer due to the low thermal conductivity of air. These materials are commonly used in building insulation to improve energy efficiency.
What are the benefits of using waterproof spray foam insulation for insulating a building?
Using waterproof spray foam insulation for insulating a building offers benefits such as improved energy efficiency, reduced air leakage, moisture resistance, and increased structural strength.
How do you measure insulation resistance between windings for 120KVA alternator?
Use a megger or a insulation tester. Place one lead on any of the phases nd other lead the alternator boy. Observe the indicator. In megger it s good with infinity or it must be minimum 100M OHM, IF IT SHOWs 50 it could be coz of moisture in winding by heating the alternator the insulation resistance value may improve
What type of heat transfer does adding insulation slow down?
Generally speaking, insulation slows the movement of thermal energy by convection. The dead air spaces in fiberglass insulation make it a good bet to put in walls and under roof spaces. Styrofoam coolers work because the many, many tiny air spaces in the styrofoam are places where air is trapped, and those are dead air spaces.
What is air resistance and what are the two factors that air resistance depends on?
Air resistance is the force that opposes the motion of an object through the air. It depends on the speed of the object and its surface area exposed to the air.
What force slows objects moving through the air?
Air resistance
Is air a better insulator than fiber glass?
No, fiberglass is a better insulator than air. Fiberglass has a higher R-value, which measures its resistance to heat flow, compared to air. Fiberglass is commonly used as insulation in buildings to improve energy efficiency.
How does home insulation work?
It keeps cold air out in the winter and warmth in. And keeps hot summer air out and cool air in. The insulation traps pockets of air which slows down the transfer of heat from one area to another. The material which makes up the insulation also slows down the transfer of heat. This slowing down is called resistance, hence the measurement on insulation, R-values. Some insulation do act as an air barrier (and some can even act as a moisture barrier); however this is not always the case. In modern building methods, we use an additional air and/or moisture barrier to help maintain the comfort in the home. You do not want to stop air flow in all situations, and you really do not want a moisture barrier in areas along the Gulf Coast- this can harm the structure of the home.
