Recent content by bianca1992

Initially the question is worded quite loosely which is confusing (see top). For the first part of applying the first law of thermodynamics (assuming its a closed system) Q2 = U2 - U1 + 1W2 and this needs to be applied to the system eliminating parts not needed. P cannot be moved as you said

firstly for the first law does one simply remove pressure from the closed loop first law of thermodynamics?

firstly for the first law does one simply remove pressure from the closed loop first law of thermodynamics?

For the first law I have used Q-W = difference in energy and attempted to find the temp via finding the internal energy and enthalpy using deltau = cv x delta T and delta h = cp x delta T where I got 8520 KJ and 12063 KJ but now I am not sure how if I should integrate and remove pressure from...

Hi, For the first law I have used Q-W = difference in energy and attempted to find the temp via finding the internal energy and enthalpy using deltau = cv x delta T and delta h = cp x delta T where I got 8520 KJ and 12063 KJ but now I am not sure how if I should integrate and remove pressure...

Hi all I am struggling with this classs example A pump compressing hydrogen from a low pressure to a high pressure tank where the tanks pressure is constant and H2 is an ideal gas. Hydrogen: (H2: MW = 2, Cv = 10 kJ/kgK) Low pressure tank: (P = 4 bar, T = 30oC) High pressure tank: (P = 100...

Hi all I am struggling with this textbook example :( I have applied the formula but the numbers I am getting are really wrong! A pump compressing hydrogen from a low pressure to a high pressure tank where the tanks pressure is constant and H2 is an ideal gas. Hydrogen: (H2: MW = 2, Cv = 10...