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Which of the following statement regarding heat transfer through stationary fluid is correct? Select one: a. Conduction occurs when temperature gradient exists in stationary fluid Ο b. Convection occurs when temperature gradient exists in stationary fluid Ο c. Radiation occurs when temperature gradient exists in stationary fluid d. No heat transfer occurs when temperature gradient exists in stationary fluid

Respuesta :

Answer:

b. Convection occurs when temperature gradient exist in stationary fluid.

Explanation:

Convection : heat transport through fluid movement;  It also occur when there is heat exchange between a solid and a fluid.  

there are two types:

  • free convection: Only natural forces intervene ( gravity ).
  • forced convection: designed by a man.

                  Q = h * A * ΔT

∴ h : film coeffcient

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