Water serves as a common coolant in heat exchange apparatus mostly because of its___________________?
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Answer: A. Abundance & high heat capacity
Explanation
Water possesses an exceptionally high specific heat capacity compared to most common liquids. Its widespread natural abundance makes it economically viable for large-scale industrial cooling operations. High heat capacity allows water to absorb massive amounts of thermal energy with minimal temperature rise. Specific heat capacity measures the amount of heat required to raise unit mass by one degree. Water covers most of the Earth surface, ensuring limitless supply for coastal industrial plants. Its chemical stability at moderate temperatures prevents rapid decomposition during cooling cycles.
Power plants utilize millions of gallons of cooling water daily to condense turbine exhaust steam. Automobile radiators circulate water-glycol mixtures to dissipate intense internal engine combustion heat. Chemical manufacturing facilities rely on water cooling towers to maintain safe reactor temperatures. Low density is not a reason for using water, as high density aids in pumping efficiency. Low viscosity is beneficial for flow, but its high heat capacity remains the primary cooling driver. High fluidity assists fluid circulation, yet thermal capacity dictates total heat absorption potential.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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