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F gas exam part 2 with accurate detailed answers
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Which one of the following describes enthalpy - ✔✔Heat content per unit mass
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The function of an evaporative condenser is to - ✔✔reject latent heat to change vapour to
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liquid
Subcooling is established when: - ✔✔refrigerant liquid is cooled below its boiling point
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The most efficient operating temperatures for a chill coldroom designed to maintain a space
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temperature of +2°C with 'air on' to the condenser at 32°C are: - ✔✔evaporating at -8ºC
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and condensing at + 48ºC
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Which one of the following refrigerants is most likely to suffer from changes in its
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composition after leakage from a static system? a)R22 b)R134a c)R245fa d)R407C -
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✔✔R407C
Which of the following refrigerant conditions will provide a clear liquid line sight glass? -
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✔✔Subcooled liquid ||
Which one of the following environmental issues is addressed by the Kyoto Protocol? -
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✔✔Climate change ||
Which one of the following refrigerants has least impact on direct global warming? -
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✔✔R717
The Energy Efficiency Ratio of a heat pump system is found from: - ✔✔Heating capacity
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Total system input power
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F gas exam part 2 with accurate detailed answers
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Which one of the following describes enthalpy - ✔✔Heat content per unit mass
|| || || || || || || || || || || ||
The function of an evaporative condenser is to - ✔✔reject latent heat to change vapour to
|| || || || || || || || || || || || || || || ||
liquid
Subcooling is established when: - ✔✔refrigerant liquid is cooled below its boiling point
|| || || || || || || || || || || ||
The most efficient operating temperatures for a chill coldroom designed to maintain a space
|| || || || || || || || || || || || ||
temperature of +2°C with 'air on' to the condenser at 32°C are: - ✔✔evaporating at -8ºC
|| || || || || || || || || || || || || || || || ||
and condensing at + 48ºC
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Which one of the following refrigerants is most likely to suffer from changes in its
|| || || || || || || || || || || || || || ||
composition after leakage from a static system? a)R22 b)R134a c)R245fa d)R407C -
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✔✔R407C
Which of the following refrigerant conditions will provide a clear liquid line sight glass? -
|| || || || || || || || || || || || || || ||
✔✔Subcooled liquid ||
Which one of the following environmental issues is addressed by the Kyoto Protocol? -
|| || || || || || || || || || || || || ||
✔✔Climate change ||
Which one of the following refrigerants has least impact on direct global warming? -
|| || || || || || || || || || || || || ||
✔✔R717
The Energy Efficiency Ratio of a heat pump system is found from: - ✔✔Heating capacity
|| || || || || || || || || || || || || || ||
Total system input power
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