Confused about Compressed Water in Constant Pressure Process?

AI Thread Summary
To determine the heat required to convert 2 kg of compressed water at 50°C to superheated steam at 200°C under constant pressure at 1 bar, the specific internal energy values and volume calculations are essential. The internal energy of superheated steam (u2) is given as 2659 kJ/kg, while the initial internal energy (u1) for compressed water needs to be identified, likely through steam tables. The work done in the process can be calculated using the formula W = -P(V2 - V1), where specific volumes must be determined. The relationship Q + W = U2 - U1 will help in finding the heat added (Q). Understanding steam tables and specific volume calculations is crucial for solving this problem accurately.
craglyboy
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Homework Statement


In a constant pressure process ant 1 bar determine how much heat must be added to raise the temperature of 2kg of compressed water at a temp of 50C so that it become superheated steam at a temp of 200C?

u2=2659KJ/Kg

Homework Equations


W=-P(V2-V1) Q+W=U2-U1


The Attempt at a Solution



Not really sure how to work out the volumes and struggling with how to find u1 as its compressed water.

Do i find out the volumes by attaining the specific volume and multiplying by the mass
 
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