What are Phase Change Materials (PCM)?<\/h1>\n
You’ve likely come across the term Phase Change Materials (PCM) and wondered, “What exactly are PCM, and why is there such a push for them as a sustainable solution?” Let’s explore the essence of PCM\u2014they are substances with the unique capability to absorb or release energy during a phase transition. This exceptional quality enables PCMs to smoothly shift between solid and liquid states, effectively storing and releasing thermal energy in the process.
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How Does It Work<\/span><\/h2>\nWhen you heat a solid PCM, it turns into a liquid, absorbing a lot of heat energy in the process. Similarly, when you cool a liquid PCM, it turns into a solid, releasing the stored heat energy. This ability to absorb and release heat without changing its temperature is what makes PCM so special.<\/p>\n
Let\u2019s consider an everyday example: ice turning into water. To melt ice, it requires a considerable amount of energy (334 joules per gram, to be precise). However, once it becomes water, it only needs 4.18 joules per gram to raise its temperature by one degree Celsius. This stark contrast illustrates the unique capability of PCMs in absorbing and releasing energy.<\/p>\n
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