Find the value of insulation

Assignment Help Physics

Reference no: EM131515035

Question: Insulation placed on a small-diameter pipe or electrical wire to prevent heat loss may actually increase the heat loss instead. This occurs because as the insulation radius rz increases, the insulation thermal resistance increases but the outside surface area is increased at the same time. The result is that the rate of heat loss will increase with increasing r2 until a maximum heat loss is reached, after which further increase in rz lowers rate of beat loss.

if the inside surface temperature of the surroundings are at TZ, find the value of insulation, T1, is known, and the rz for maximum rate of heat loss. Assume that T1, T2, k, h, and r1 are constant.

Reference no: EM131515035

Questions Cloud

Estimate the true temperature of the air : Air is flowing steadily through a duct whose inner walls are at 800°F. A thermocouple housed in a 1-in. OD steel well with rusty exterior indicates.

Explain human development in the context of the situation : What potential effects would themes such as the client's culture, ethnicity, family, education, and gender have on the situation and recommendation(s)?

Calculate the direct radiant heat transfer : Calculate the direct radiant heat transfer between two parallel refracting black surfaces 12 by 12 ft spaced 12 ft apart, if the surface temperatures are 1300°F

Is the assumption of stagnant air a good one : A window consists of two layers of glass, each 1/4 in. thick, separated by a layer of dry, stagnant air, also 1/4 in. thick.

Find the value of insulation : Insulation placed on a small-diameter pipe or electrical wire to prevent heat loss may actually increase the heat loss instead.

What is profitability index for each project : If the required return is 16 percent, what is the profitability index for each project?

The lens of developmental psychology : Explain human development in the context of current trends by evaluating the program through the lens of developmental psychology.

The margin of safety : The unit sales price is $90, unit variable cost is $45, and the fixed costs per month are $5,000. The margin of safety is:

Calculate the variance and the expected return for each bond : Suppose that the following two bonds have the same characteristics except that. Calculate the variance and the expected return for each bond.

User Account

All Pages