Question

A container holds a liquid at 660C bulk temperature, and convects heat to a wall with an external wall temperature of 250CIf the surface heat transfer coefficient is 5 W/m2 K.Calculate the heat transfer per m2 and state the principles and theories used to produce this calculationadd any 10 pictures to explain your answer

Answer 1

Answer:

The heat transfer per m² = 2050 W/m²

The principle used to produce this calculation is Newton's law of cooling

Explanation:

The temperature of the liquid, T₁ = 660°C

The temperature of the external wall, T₂ = 250°C

The change in temperature, △T = T₁ - T₂

△T = 660 - 250

△T = 410

The heat transfer coefficient:

$h_c=5W\text{/m}^2K$

Newton's law of cooling states that the rate of heat loss of an object is proportional to the difference in temperatures between the body and its surroundings

The heat transfer per m² is calculated as:

$\begin{gathered} \frac{q}{A}=h_c\triangle T \\ \\ \frac{q}{A}=5\times410 \\ \\ \frac{q}{A}=2050W\text{/m}^2 \end{gathered}$

The heat transfer per m² = 2050 W/m²

Find attached the picture below for better understanding of the solution