Heat transfer of a tank connected to Sterling Engine

In summary, the conversation discusses conducting a heat transfer analysis on a tank with water for a displacing stirling engine. The inlet heat input is 1000W and there will be losses due to conduction and convection. The goal is to determine the temperature out of the tank, considering the engine uses 800W and the remaining 200W is irrelevant. Other factors to consider include the mass flow rate of water and the specific heat capacity of water. Examples for reference may also be helpful.
  • #1
hail_thy_gt
18
0
Have a new task, would appreciate some pointers.

Conducting a heat transfer analysis on a tank with water coming in and out that's to serve as a hot side for a displacing stirling engine. If the inlet q dot into the tank is 1000W. Observing there will be losses due to conduction and convection from the tank to the ambient. How do you go about determining the temperature out of the tank, if say the stirling engine takes in 800W.

What other factors should I be considering? Are there examples for reference?
 
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  • #2
1000 watt in, 800 watt used by the engine. The 200 watt difference flowing out is irrelevant.
The water temperature will be reduced by the (lost 800 watt) / (specific heat capacity of water).

You must therefore also know the mass flow rate of the water since in each second it will be reduced by 800 watts = 800 joules per second.

The specific heat capacity of water is about 4.2 J /g /K. Or 4200 joule per kg per degree kelvin.
 

1. How does heat transfer affect the efficiency of a tank connected to Sterling Engine?

Heat transfer plays a crucial role in the efficiency of a tank connected to Sterling Engine. The higher the rate of heat transfer, the more heat is supplied to the engine, resulting in higher efficiency. On the other hand, a lower heat transfer rate can lead to decreased efficiency as the engine may not receive enough heat to perform optimally.

2. What factors influence the rate of heat transfer in a tank connected to Sterling Engine?

The rate of heat transfer in a tank connected to Sterling Engine is influenced by several factors, including the temperature difference between the tank and the engine, the material of the tank and engine, the surface area of the tank, and the type of heat transfer mechanism (conduction, convection, or radiation).

3. Can the type of fluid inside the tank affect the heat transfer to the Sterling Engine?

Yes, the type of fluid inside the tank can greatly influence the heat transfer to the Sterling Engine. For instance, a fluid with high thermal conductivity, such as water, can transfer heat more efficiently compared to a fluid with low thermal conductivity, such as oil. It is important to choose a fluid with suitable thermal properties to optimize heat transfer in the system.

4. How can heat loss be minimized in a tank connected to Sterling Engine?

Heat loss in a tank connected to Sterling Engine can be minimized by using proper insulation materials around the tank to reduce heat transfer through the walls. Additionally, minimizing the temperature difference between the tank and the surrounding environment can also help reduce heat loss. Regular maintenance and repairs of any leaks in the system can also prevent heat loss.

5. Is there a limit to the amount of heat that can be transferred from the tank to the Sterling Engine?

Yes, there is a limit to the amount of heat that can be transferred from the tank to the Sterling Engine. This is known as the maximum heat transfer rate, which is determined by the design and size of the tank and engine, as well as the heat transfer mechanisms involved. Going beyond this limit can cause damage to the system and decrease its efficiency.

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