Define your variabies ised u m Part A (3 points each) The transfer of heat energ

Question

Define your variabies ised u m Part A (3 points each) The transfer of heat energy from the warm body to the colder body through a gaseous medium, is an example of? a. convection b. conduction c. radiation d. 1 energy transfer in a true blackbody 2. Heat capacity is the amount of a. heat required to change a unit of mass one degree in temperature b. energy required to change state of matter. c energy that must be applied to change matter, at the boiling point, from liquid to gas d. energy which must be absorbed to change from solid to liquid 3. The flammable limit(s) are defined as: a the exact proper misture (mass of each reactant) of chemical for a chemical reaction. b the percentage of air and fuel where the lowest amount of fuel will combust. c. a mixture which reacts and does not consume fuel or oxygen. tages in order to support a combustion reaction the mixture of fuel gases and oxygen in specific percen Which of the following calorimeters would be appropriate for rack storage tests? a. Cone calorimeter d 4. b. Intermediate-scale calorimeter (ICAL) c. Industrial calorimeter Oxygen bomb calorimeter What is the flame height of a 1200 kW fire along a wall? a. 3.9 m b. 39 m c. 39 m d. 390 m d. 5.

Explanation / Answer

1.a , Convection mode of heat transfer occurs through a fluid medium, be it gas or liquid, unlike conduction which only takes place in solids.

2.a , Heat capacity is defined as the heat required to raise the temperature of unit mass of a substance by 1 degree.

3.d ,Flammability limits are the extreme composition values which ensure a proper combistion of a particular gaseous fuel misture.

4.b , Intermediate Scale Calorimeter is the most appropriate type of calorimeter for the storage rack fire tests.

5.a , Height of flame along the wall is given by

( H = 0.034*Q^(2/3) Q - kW )

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