Direct Heat Transfer Between a Liquid And a Gas

In summary, the conversation is about calculating the heat transfer rate between a liquid and a gas, specifically water and the residual space above it. The question pertains to finding the heat transfer rate given the pressure and temperature of the gas and liquid. There is currently no help available, and additional information is needed to provide assistance.
  • #1
bkhan10000
9
0
Hey guys,

I was trying to find the answer to this question but could not seem to find anything. I am trying to figure out how to calculate heat transfer rate between a liquid and a gas. Say the the liquid is water in a chamber (with no heat transfer to the walls). The gas is the residual space above the liquid, meaning that the contact surface is the surface of the water. Given the gas and the liquid are at a certain pressure, but the temperature of the gas and the liquid differ. How can I find the heat transfer rate for this problem? Much thanks for help!

Regards,
Bob
 
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  • #2
I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?
 

1. What is direct heat transfer between a liquid and a gas?

Direct heat transfer between a liquid and a gas refers to the transfer of thermal energy from a liquid to a gas, or vice versa, through direct contact between the two substances. This type of heat transfer can occur through conduction, convection, or radiation.

2. How does direct heat transfer between a liquid and a gas differ from indirect heat transfer?

Indirect heat transfer refers to the transfer of thermal energy between two substances that are not in direct contact with each other. This can occur through a barrier, such as a wall or container, or through a medium, such as air or water. Direct heat transfer, on the other hand, occurs through direct contact between the two substances.

3. What factors affect the rate of direct heat transfer between a liquid and a gas?

The rate of direct heat transfer between a liquid and a gas is affected by several factors, including the temperature difference between the two substances, the surface area of contact, the type of material the substances are made of, and the presence of any barriers or insulators.

4. How is direct heat transfer used in everyday life?

Direct heat transfer between a liquid and a gas is used in many everyday applications, such as boiling water on a stove, heating a room with a radiator, or cooling down a drink with ice cubes. It is also used in industrial processes, such as distillation and evaporation, to transfer heat between liquids and gases.

5. How is direct heat transfer between a liquid and a gas related to the laws of thermodynamics?

Direct heat transfer between a liquid and a gas is governed by the laws of thermodynamics, specifically the second law which states that heat will always flow from a hotter substance to a cooler substance. This law also explains why direct heat transfer can only occur between substances with a temperature difference, as heat will not naturally flow from a cooler substance to a hotter substance.

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