Posts tagged temperatures
Q&A: How do you tell the effeciency of a electrical power plant when they give you temperatures?
Oct 8th
Query by redmessssss: How do you notify the effeciency of a electricity plant when they give you temperatures? A proposed electricity plant will use warm water from the surface of the ocean (at thirty degrees celcius) as an energy source. The condenser will use colder drinking water pumped up from a 2000 foot depth (at 10 degrees celcius). What is the maximum efficiency this plant can accomplish?
This is from my thermodynamics course.
Ideal reply:
Reply by wingstwoThe Carnot equation decides the greatest theoretical efficiency.
eff = 1 – Tc / Th = 1 – (10+273.fifteen)/(thirty+273.fifteen) = 6.597% This is not substantial, More >
geothermal electricity is warmth from within the earth. underground temperatures usually increase 9 degrees C for?
Jun 21st
Query by monkey : geothermal electricity is warmth from within the earth. underground temperatures usually improve nine degrees C for? each and every 300 meters of depth. how deep would a properly have to be for a temperature to be 189 degrees C greater than the surface temperature? A 14.3m B 6300m C 630m D 63m
Finest answer:
Solution by goober300* 189 / nine = 300 * 21 = 6300 m
Remedy is B
Add your individual remedy in the comments!
Q&A: Can cell phones freeze in cold temperatures?
May 12th
Question by I Like C: Can cell phones freeze in cold temperatures? Generally, is cold weather conditions unsafe to cell phones?
Best response:
Response by ***~***No but it may be dangerous to the battery.
Give your solution to this issue below!
If AGW is responsible for 1.6W/m^2 of retained energy how long will it take to raise ocean temperatures 1C?
Nov 30th
Question by Dr.T: If AGW is responsible for 1.6W/m^2 of retained energy how long will it take to raise ocean temperatures 1C?
Best answer:
Answer by Noah Tall1.6 watt equals 1.6 joules per second which is the same as .38 calories. 1 calorie will increase 1 gram (1 cubic centimeter) of water in 1 second. There is 1,000,000 grams of water in one cubic meter so it would take 2.63 million seconds to increase one cubic meter, roughly 30 days. The average depth of the oceans is 3,796 meters, which works out to 316.5 years, give or take due to rounding.
What do More >
Is suspended animation at cryogenic temperatures a good future strategy for manned space exploration?
Aug 31st
Question by William P: Is suspended animation at cryogenic temperatures a good future strategy for manned space exploration? Speculative fiction writers have long envisioned the potential of freezing people for long, dangerous space journeys to other worlds (both within our solar system and beyond). While the technology does not currently exist to freeze and thaw people properly, does the potential for such technology warrant a renewed look by private industry and by government researchers? Note naturally that nature provides for some animals to survive in subzero temperatures by freezing solid and thawing (including some frog species). Note also that the damage More >
Do fuel cells hold a formidable advantage over liquid hydrogen kept at harsh below freezing temperatures ?
Aug 2nd
Question by AC: Do fuel cells hold a formidable advantage over liquid hydrogen kept at harsh below freezing temperatures ? Fuel cell technology being developed by several automakers, namely Honda and Chevy, is a non-combustion form of energy unlike liquid hydrogen which essentially uses the same engine structure as conventional cars. This require liquid hydrogen to be kept in the vehicle at 420 degrees below zero which is costly. In fuel cells, hydrogen based cells are kept on stacks. A hydrogen – oxygen reaction creates electricity that powers the car. The fuel cells are refilled with the hydrogen chemical.
Best answer:
Answer by More >
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