0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What transfers heat from the hot gas to the airstream to heat the structure?
Heat exchanger
Why is the work output of a machine never equal the work input?
Because -a small percentage of the input is lost as heat from friction.
What is the efficiency of a street cleaners engine when the heat input is 200000 joules and the waste is 150000 joules?
If the waste heat is 15 compared to the total heat input of 20 (ignoring the thousands) this means the heat doing useful work is 5, which represents 25 percent of the total input heat, so this is the efficiency. Waste heat in a car is the sum of the engine cooling losses and the exhaust losses, the rest is converted to mechanical energy which is useful. 25%
What effects do heat and pressure have on particles?
Wee
What is the efficiency of a street cleaner's engine when the heat input is 200000 joules and the heat waste is 150000 joules?
25 percent
What are the effects of heat input and the effects of the rate of cooling and heat distribution during welding on the grain structure of two given welded joints?
If you have no idea - don't write anything..
How does it affect the molecular structure heat treat steel?
When ever heat is applied there occur a change in grain structure.The best working temperature for steel is between 400 - 750 c. If steel is heated below 400c and then cooled it results a brittle zone. And above 750c heavy oxidation losses occur. If rate of cooling is fast it will result in fine grain structure and material will become hard. If rate of cooling is slow coarse grain structure is formed and material will be ductile.
What welding position has the highest heat input?
Heat rises so in my experience it is always overhead that has the most heat input.
What is the maximum heat input from a gas burner on a fire tube boiler?
The maximum heat input is about 200 kelvin.
What is the atomic structure of heat?
Heat does not have an atomic structure. It is a form of energy, not matter.
What is the texture and grain structure of anthracite?
Anthracite has a hard and compact texture. Its grain structure is fine-grained and dense, with a highly developed lamination and a bright, shiny appearance. It has a high carbon content and a low moisture and volatile matter content, making it a high-quality coal with excellent heat and energy properties.
What is the crystalline structure of glass?
A crystalline structure which consists of variously orientated crystal planes and grain lines and boundaries. A crystalline structure which which has crystals of varying size and randomly organised owing to the growth and production conditions. i.e. heat and time for crystals to develop and form an organised crystalline structure with well organised grain boundaries.
What is the energy input of burning coal?
Heat
How do you calculate heat input and traveling speed for gas metal arc welding?
Heat input= voltage x current x 60 \ ipm
What are the effects of heat waves?
heat stroke, heat cramps and heat exhaustion
How you calculate heat input and traveling speed for Gas Metal Arc Welding?
How you calculate heat input and traveling speed for Gas Metal Arc Welding?
Why is a reaction endothermic?
Because it requires heat input.
