This document discusses using a phase change material (PCM) to improve the performance of a single basin solar still. It defines a PCM as a substance that absorbs and releases a large amount of thermal energy during its phase change from solid to liquid and back again. The document explains that a PCM maintains a regulated temperature by absorbing heat as the external temperature rises until its melt point, then releasing heat as the external temperature falls until it solidifies again. It lists the six main types of phase changes as evaporation, condensation, freezing, melting, sublimation, and deposition and provides examples like freezing and melting ice or boiling water.
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Pcm intro
1. SUBJECT :-project
TOPIC:-. Performance Prediction of Single Basin Solar
Still By Using PCM
Group members :-
Harsh (15ME013)
Pinkesh (15ME030)
Dixit (15ME037)
Vadodara Institute Of Engineering
Guide:- Prof. Chirag. R. Patel
2. PCM
• A phase change material (PCM) is a substance
with a high heat of fusion which, melting and
solidifying at a certain temperature, is capable
of storing and releasing large amounts of
energy.
3. How does a phase change material
work?
• A phase change material absorbs and releases
thermal energy in order to maintain a
regulated temperature. When a PCM is in its'
solid phase it will absorb heat as the external
temperature rises. The temperature of the
PCM will mirror the external temperature until
the PCM's melt point is reached.
5. What are the phase changes?
• Phase Change: Evaporation, Condensation,
Freezing, Melting, Sublimation & Deposition.
Substances on Earth can exist in one of
four phases, but mostly, they exist in one of
three: solid, liquid or gas. Learn the
six changes of phase: freezing, melting,
condensation, vaporization, sublimation and
deposition.
6. What are examples of phase changes?
• Examples of Phase Changes. Some phase
changes are more common and easier for us
to visualize. For example, you have probably
witnessed freezing, melting,
andvaporization just by making ice, melting
ice, and boiling water. Condensation often
occurs on the outside of cold beverage
containers.Jan 4, 2016
