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Introduction to GWP Refrigerants

GWP, or Global Warming Potential, is an important metric for assessing the impact of refrigerants on the Earth's climate. It represents the ability of a refrigerant emitted into the atmosphere to contribute to the rise in Earth's temperature over a given period of time, typically 100 years. Since carbon dioxide is one of the primary greenhouse gases, GWP is used to evaluate the climate change impact of refrigerants.

Working Process: When the motive element is subjected to external gas or liquid driving pressure, this pressure needs to be sufficient to overcome the elastic force of the compression spring. Once this condition is met, the pressure will push the piston rod upwards, causing the microswitch to actuate. This action manifests as the opening of the normally closed contacts and the closing of the normally open contacts, thus controlling the on-off state of the circuit.

Reset Process: When the external pressure disappears or decreases, the piston will separate from the microswitch under the action of the spring, resetting the contact system.

When evaluating the GWP of refrigerants, it is typically calculated over 100 years, denoted as GWP100. This is because international agreements such as the Montreal Protocol and the Kyoto Protocol have adopted GWP100 as the standard for assessing greenhouse gas emissions and setting reduction targets.

In addition to GWP, another crucial metric is ODP (Ozone Depletion Potential), which evaluates the potential impact of refrigerants on ozone layer destruction. These two metrics together constitute the key standards for assessing the environmental impact of refrigerants.

In summary, GWP is an important indicator for evaluating the potential impact of refrigerants on global climate change, and it is crucial to consider their GWP values along with other relevant factors in selecting and using refrigerants to minimize negative environmental impacts.