14.2 Specific heat capacity and latent heat

Question 4

A thermal management system in a communications satellite uses liquid ammonia to absorb waste heat from the onboard electronics.

At the start of a test cycle, the mass of liquid ammonia in the cooling reservoir is 1.85 kg.

While the satellite operates under high load, the ammonia boils, absorbing thermal energy from the electronics. When the test cycle is completed, the remaining mass of liquid ammonia in the reservoir is found to be 1.49 kg.

The total thermal energy transferred to the ammonia while it was boiling is $J493\,200\text{ J}$ .

Calculate the specific latent heat of vaporisation of ammonia.

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A thermal management system in a communications satellite uses liquid ammonia to absorb waste heat from the onboard electronics.

At the start of a test cycle, the mass of liquid ammonia in the cooling reservoir is 1.85 kg.

The total thermal energy transferred to the ammonia while it was boiling is $J493\,200\text{ J}$ .

Calculate the specific latent heat of vaporisation of ammonia.

14.2 Specific heat capacity and latent heat

Question 4

Markscheme

14.2 Specific heat capacity and latent heat

Question 4

Markscheme

14.2 Specific heat capacity and latent heat

Question 4

14.2 Specific heat capacity and latent heat Questions

14.2 Specific heat capacity and latent heat

Question 4

14.2 Specific heat capacity and latent heat Questions