An oil preheater consists of a single tube of 10-mm diameter and 5-m length, with its surface maintained at 175 C by swirling combustion gases. The engine oil (new) enters at 75 C. What flow rate must be supplied to maintain an oil outlet temperature of 100 C? What is the corresponding heat transfer rate?

Lecture 3: Graphics Problem Solving Review Engineer's Scale Practice Sheet Outcomes Use an engineering scale to scale features of a drawing Generate graphic solutions of problems Practice legible writing Exercise 1 Construct a triangle of side lengths 3 cm, 4 cm, and 5 cm and measure the internal angles with your protractor. Use a scale of 1" = 1 cm. Cannot use calculator. o Tools Engineering scale Compass Protractor Exercise 2 Graphically solve the 4 sided polygon to scale on engineering paper Choose a scale so that your drawing is within the solid border and covers 1/2- 3/4 of your page Measure and report length of sides A & B. Measure angl