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Why are heat engines intentionally run at high operating temperatures?
Wiki User
∙ 13y ago
better thermal efficiency.
Wiki User
∙ 13y ago
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Why are temperatures near the Great Lakes cooler in the summer than temperatures a few miles away?
The lakes have a high specific heat capacity.Answer:Air passing over the lakes becomes moister from evaporation. This evaporation of water requires heat which is absorbed from the air. As a consequence the air becomes cooler.
What is the heat capacity of silicon dioxide?
Heat capacity is a function of temperature so there is no single value that is valid at all temperatures. That said, The heat capacity ranges from about 680 to about 730 J/kg·K. If you just estimate it as 700 J/kg·K you won't be far off.
What are the properties of ceramic?
you can get them in all sorts of colours. mainly brown. hope it helped :)
Why is rubbing alcohol a good liquid to use in a simple thermometer?
Rubbing alcohol is a good liquid to use in a simple thermometer because it expands when heat ia added to it. When cold temperatures are added to it, it regroupes.
What is it called when clay turns to ceramic?
I believe the process is called firing, some clays require temperatures of close to 2500 degrees F, other clays it takes much less heat depending on the minerals in the clay.
What is The fundamental requirements of materials which used as coolant?
high heat capacity... fluid at normal operating temperatures... not damaging to the material it is circulating through... affordable...
How do engines lose energy to the environment?
Mainly through the relatively low thermodynamic efficiency of heat engines (petrol, diesel, steam turbines, gas turbines), which waste at least 50% of the chemical energy of the fuel. Engineers know that the efficiency is set by the upper and lower temperatures of the working fluid in the engine. They also understand the limitations of the materials available to make machines, which place limits on the temperatures and pressures that can be used.
Why do engines get discolored?
engines get discolored because of the heat . the heat comes from combustion from gass and air
Does heat engines use heat to do work?
by engine
What is energy that flows from higher temperatures to lower temperatures?
Heat.
Does car works on heat produced by petrol when it is burnt?
Yes. Gasoline and diesel engines are both heat engines.
Which direction does heat flow from when both temperatures are the same?
When both temperatures are the same, heat does NOT flow between objects.
Heat engines use heat to do work?
Yes. Heat engines come in various forms. For example, internal combustion using gasoline or diesel, external combustion (not much used), steam engines reciprocating or turbine, gas turbines, rocket engines.
Thermal energy that flows from higher temperatures to lower temperatures?
heat
Is a engine in a car the same as a heat engine?
A car engine is a heat engine, but there are various types of heat engines outside the realm of car and truck engines.
How are heat engines classified?
heat engines are classified on the location of the combustion chamber , if it is outside the whole set up then it is external heat engine and vice versa.
What is it called when heat can go from cooler to warmer temperatures?
"heat" can not go from colder to warmer temperatures. Heat is not an object, it's energy. Temperature is simply a measurement of how much heat an object possess.
