q 1 and 2 please Ensure that an \'originality check\' can be performed on Turnit

Question

q 1 and 2 please

Ensure that an 'originality check' can be performed on Turnitin. This is to ensure that GradeMark can be used to mark all submissions and therefore provide consistent feedback. Therefore, please do not combine the different pages by printing out and then rescanning - combine everything electronically and create a pdf from Word (or equivalent). If you include the coversheet in Word format, then GradeMark should work. The approximate allocation of marks to each part of a question is indicated in the right hand margin. This exercise contributes 20% towards the total score in the module. Write equation for the First and Second Laws of Thermodynamics for a closed system. Define all the terms and state their units. Write an equation for the First Law of Thermodynamics for an open system at steady state. Define all the terms and state their units. Derive an equivalent 'steady flow entropy equation' which describes the Second Law in such a system.

Explanation / Answer

QUESTION: 1

Closed system refers to a sytem where transfer of energy with the surroundings is allowed, but not the transfer of matter.

Ist law of thermodynamics is the law of conservation of energy: Energy can neither be created, nor be destroyed, but can be transformed from one form to another.

Thus for a closed system,

del U= Q - W

where del U = change in internal energy of the closed system

Q = heat transferred to the system

W = Work done by the system on the surrounding

2nd law of thermodynamics states that total entropy of universe (or an isolated system) increases over time.

For a closed system, del S > delQ/ T

del S= change in entropy

del Q= change in heat

T = absolute temperature

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