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The idea of using irrigation to help prevent frost is that the water that is sprayed in the fields freezes and releases heat to the air as the liquid water changes to ice. The goal is to keep the air temperature in the area at 32 F by adding heat in this process.
https://www.senninger.com/news/2017/10/2/how-protect-crops-frost-damage-using-sprinklersThis is workable if you have irrigation water supply tougher if you have limited supply.
If you get a run of frosts over a few days, you will need to run the overheads each night, so you may be over watering in winter when actual irrigation not required.
A temperature alarm may be required to tell you when to start the frost sprays, not just by your own judgement, you may miss an event, or run it when not quite required.
For any system using water to prevent frost damage, the mains and hoses must not freeze up, including simple systems like your garden taps and hose.
Many people drain and hang the garden hose to prevent ice formation inside the hose. Taps may need covering.