Liquifying 1 kilogram of ammonia requires around 1kWh per kilogram of ammonia

The energy requirements for liquefying ammonia are relatively low due to its physical properties and the specific conditions needed for its liquefaction. Ammonia has a boiling point of -33.34°C (-28.01°F) at atmospheric pressure, which allows it to be liquefied with less extreme cooling. This significantly reduces the energy needed for refrigeration and liquefaction. Additionally, the heat of vaporization for ammonia is lower, meaning less energy is required to convert it from a gas to a liquid state. The liquefaction process for ammonia involves cooling the gas to -33.34°C and compressing it to maintain its liquid form, requiring approximately 1 kWh of energy per kilogram of ammonia.¹ These factors make the liquefaction of ammonia an energy-efficient process.

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Footnotes

1. Citation needed ↩