Am I missing out by not writing the energy balance?

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SUMMARY

The discussion centers on the importance of writing energy balances in engineering, particularly in the context of steady flow devices like turbines. Participants emphasize that the fundamental principle is the conservation of energy, where energy input must equal energy output. The 'steady flow energy equation' is highlighted as a crucial tool for analyzing such systems. Understanding and applying this equation simplifies the analysis of energy transformations in engineering applications.

PREREQUISITES
  • Basic understanding of thermodynamics principles
  • Familiarity with the concept of conservation of energy
  • Knowledge of steady flow devices in engineering
  • Ability to apply equations in practical scenarios
NEXT STEPS
  • Study the 'steady flow energy equation' in detail
  • Explore examples of energy balances in turbine systems
  • Learn about other conservation laws in thermodynamics
  • Investigate software tools for energy analysis in engineering
USEFUL FOR

Engineering students, mechanical engineers, and professionals involved in energy systems analysis will benefit from this discussion, particularly those focusing on thermodynamics and fluid mechanics.

civilengoo
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Homework Statement
Been studying for this thermo exam I've got coming up and I think I've been studying it all the wrong way and I could make my life a whole lot easier if I used energy balances, but I just don't understand them and how to write them! Would somebody be able to fully explain to me how to write these energy balances out and then how to simplify it down? Example question below https://imgur.com/MOvnLX6
Relevant Equations
Energy Balance for thermodynamics
Attempt:
No clue what equations to use from here.
 

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civilengoo said:
I could make my life a whole lot easier if I used energy balances, but I just don't understand them and how to write them!
No clue what equations to use from here
Isn't the basic idea that energy in has to equal energy out, since energy can't be destroyed?
 
Please take your best shot at it so far. What can you show us?
 
civilengoo said:
No clue what equations to use from here.
In this case, the turbine is an example of a steady flow device, so it would be worth trying to use the 'steady flow energy equation' (at its core, it is a conservation of energy equation).
 
Master1022 said:
In this case, the turbine is an example of a steady flow device, so it would be worth trying to use the 'steady flow energy equation' (at its core, it is a conservation of energy equation).
OK so far. So let's see what you do next.
 

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