How Does The Refrigeration Cycle Operate In a Cold Climate Heat Pump?

How Does the Refrigeration Cycle In a Cold Climate Heat Pump?

Cold Air Contains Energy.

Cold air has energy. The Arctic series cold climate heat pumps are designed to work in temperatures below freezing point as low as -25C (-15F).

Few people think that the air below the freezing point temperature has same relative energy as it is above freezing. But you should understand that cold air contains energy before knowing the working principle of cold climate heat pump. Remember, the temperature is -273C (Absolute Zero) in space – where there’s no energy left in the air.

Warm Air Always Moves to Cold.

Warm air contains more energy than cold air and also has more molecule collisions than its counterparts. Therefore, warm air migrates to cold air until an equilibrium condition is achieved.

So, a colder liquid –Freon is used in cold climate heat pumps. It doesn’t freeze until -50C. So, the warmer -25C air transfer its energy to the colder Freon inside the heat pump.

Pressure Maintains The Boiling Point.

Different materials have different boiling points. But they can be changed by removing or adding external pressure. Water boils at 100C (Which is at 14.69 Psi – sea level). But when you reduce the pressure, water boils faster.

When you go to Mount Everest, water boils at about 71C with a pressure of only 4.89 psi. It’s due to the less amount of pressure.

The Refrigeration Cycle In a Cold Climate Heat Pump –

The refrigeration cycle uses Freon from the heat pump. Freon transitions from a liquid to gas at amuch lower temperature as compared to water. You can adjust the pressure of Freon to manipulate when it changes phase.

The Arctic Series heat pumps a refrigerant – R410a. It’s theperfect additionto energy storage in cold weather. The temperature of the refrigerant can boil at -50C temperature by reducing thetemperature inside the heat pump.

The cold -50C Freon passes through the heat exchanger and the warm energy of outside moves to the colder Freon around the heat exchanger. As a result, Freon absorbs energy. When the pump heats up, Freon starts to evaporate and reaches to its gaseous state.

Then, the Freon gas is brought to the compressor where it will be compressed. After, it will increase in temperature as its volume decreases. This hot gas is again transferred over another heat exchanger in which the cold water or glycol is kept on the other side.

The energy is again transferred from hot to cold and heats water or glycol.Consequently, the refrigerant loses its heat, cools back to liquid to start the refrigeration cycle again.

Conclusion –

This is the basics of a refrigeration cycle. If you fully understand the basic principles, you can grasp how a heat pump works in -25C. After all, a heat pump is a mean of transferring energy from a source to another.

This principle is used in geothermal systems – which pulls out heat energy from the ground and delivers it to the home through a series of heat exchange procedures.

This article is written by Arctic Heat Pumps – specializes in providing Arctic Series air source heat pumps including cold climate, -25C heat pumps to work well in the cold climate conditions.

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Created on Jan 24th 2018 23:59. Viewed 431 times.

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