Coolant temp problem
Platinum Member
Joined: 04-09-2006
Posts: 7,043
From: Vancouver, BC, Canada
Interesting thread, and I gather we are talking about heat transfer properties here. But I don't believe the "green stuff" is at fault. Checkout some of the threads out there re: heat transfer properties of coolant - lot sof good stuff out there.
One article noted that the "green stuff" actually transfers heat a wee bit better than our Dex-cool, but as noted, once mixed with water they likely both work about the same.
"The engine cooling system is engineered to take advantage of water as the primary heat transfer fluid. Water is assigned a heat transfer value, specific heat, of 1.0.
Other fluids are compared to water. Higher vales transfer heat more poorly, while vales of less than 1.0 would transfer heat more efficiently. Ethylene glycol has a specific heat of 2.78, and propylene glycol has a specific heat of 2.73. At 50% water and 50% antifreeze, the specific heat of engine coolant is much closer to that of water.
This illustrates the necessity of mixing water and antifreeze to make engine coolant!
" (Heat Transfer Properties of Engine Coolants)
One article noted that the "green stuff" actually transfers heat a wee bit better than our Dex-cool, but as noted, once mixed with water they likely both work about the same.
"The engine cooling system is engineered to take advantage of water as the primary heat transfer fluid. Water is assigned a heat transfer value, specific heat, of 1.0.
Other fluids are compared to water. Higher vales transfer heat more poorly, while vales of less than 1.0 would transfer heat more efficiently. Ethylene glycol has a specific heat of 2.78, and propylene glycol has a specific heat of 2.73. At 50% water and 50% antifreeze, the specific heat of engine coolant is much closer to that of water.
This illustrates the necessity of mixing water and antifreeze to make engine coolant!
" (Heat Transfer Properties of Engine Coolants)
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