Final answer:
The outside circumference of a pipe is calculated by finding the outside diameter and using the formula C = πd. To find sunlight concentration on the pipe, multiply the insolation by the area of the pipe exposed to sunlight. The temperature increase of fluid like mineral oil in a pipe requires knowledge of its heat capacity and energy absorbed.
Step-by-step explanation:
The question seems to have a typo, and it's unclear what 'outside circumference of 1/4° thick pipe' or 'I/S diameter of 15°' means. However, if we interpret the 'I/S diameter' to mean 'inside diameter' and assume that '1/4° thick' and '15°' are erroneous and should be in inches, we can attempt to calculate the outside circumference of the pipe. Given an inside diameter of a pipe and its thickness, the outside diameter can be calculated by adding twice the thickness to the inside diameter. Once we have the outside diameter, we can calculate the outside circumference using the formula C = πd, where C is circumference and d is the diameter.
The question about the amount of sunlight concentrated onto a pipe per meter, assuming an insolation of 0.900 kW/m², can be calculated if we know the surface area of the pipe exposed to sunlight. To solve for the area exposed to sunlight, we would use the formula A = πdl, where d is the diameter of the pipe and l is the length of the pipe. Since insolation is given in kW/m², the power (in kW) absorbed by the pipe can be calculated by multiplying the insolation by the area (in m²).
The temperature increase of a fluid, such as mineral oil, in a pipe with a specific diameter over a time period, given all incident solar radiation is absorbed, requires more detailed information about the heat capacity of the fluid and the total energy absorbed. These types of questions involve principles of physics, particularly thermodynamics and heat transfer.