Ashell-and-tube heat exchanger with two tube passes is to heat 20,000 kg/h of water from 25 to 84oc by hot engine oil flowing through the shell. the oil makes a single shell pass, entering at 160oc and leaving at 94 oc, with a heat transfer coefficient of 500 w/m2×k. the heat exchanger contains 100 steel tubes of 22.9-mm inside diameter and 25.4-mm outside diameter. the inside heat transfer coefficient is 3210 w/m2×k. neglecting fouling coefficients, determine the required tube length.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

make you upset

explanation:

answer:

me yeah

explanation: