Two closed systems A (4000 kJ of thermal energy at 30°C) and B (3000 kJ of thermal energy at 40°C) are brought into contact with each other. Determine the direction of any heat transfer between the two systems and explain why.

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14-09-2019
Engineering

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Two closed systems A (4000 kJ of thermal energy at 30°C) and B (3000 kJ of thermal energy at 40°C) are brought into contact with each other. Determine the direction of any heat transfer between the two systems and explain why.

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ramirocarracedo ramirocarracedo · Answer 1 · 2019-09-22T01:54:15+02:00

Answer:

The direction of any heat transfer between the systems will be from system B to System A.

Explanation:

The direction of any heat transfer between the systems will be from system B to System A.

Even if the system A has a higher thermal Energy it will be from B to A because the system B has a higher temperature than A. The energy will be transferred from B to A until the temperature of the two systems equals and the temperature is in equilibrium.

This comes from the fundamental law of thermodynamics.