what are the disadvantages of using geothermal energy?
i have to do a project on geothermal energy. can anyone tell me the disadvantages of using it?
how is a hybrid solar/electric (NEV) vehicle classified?
Can a hybrid solar/electric vehicle be classified as a mechanically propelled vehicle?
How much would it cost to convert to biofuel?
Is it possible to convert a 04 Kia Sorento, designed to run on standard gasoline, to operate with biofuels? How much would this cost?
is the ion engine better than the rocket engine?
i heard the the ion engine is slow but last long before running out of fuel and the rocket engine blast off at top speeds but last only in a few seconds or minutes depending on the fuel tank
How do you transport solar power tower energy to a building that is 4 kms away?
And is an area of 1 km^2 for a solar power tower enough to produce energy for five houses? can you make an approximation of how much it could supply?
What are the challenges of widespread use of Hybrid/Electric cars?
I need to know what the problem is of many people using hybrid electricity cars all over the world at once. please be honest. i reeaally need to now. your answer is much appreciated. thankyou.
Is algae biofuel the real wave of the future in gasoline production?
What do we know about the bio reactor in Coolridge, Arizona? Is Exxon Mobil doing something? Are they tied in with Royal Dutch Shell? Can we make this in our own backyards?
What engine can run hydrogen fuel cell ?
Can a normal car engine run with a hydrogen fuel cell ? If can’t then what kind of engine can run with it ?
ten years in the us, will 5% of americans drive a solely electric, hydrogen, or other alternative energy car?
Conserving electricity: is it worth putting my desktop computer of for 45 minutes?
Which uses more electricity: leaving my desktop computer on for 45 minutes, or shutting it down and turning it on again?
Peak oil: myth or reality?
There are claims out there saying that peak oil is ultimately responsible for this recession dragging on as long as it has. Is this hoakey conspiracy nonsense, or is there some truth to it?
DSCN1783
Image taken on 2008-01-19 15:15:04 by sdbrown.
How much electrical energy (in kWh) can the wind turbine generate in a year?
Assume a wind turbine with a hub 50.0 m above the ground, a rotor diameter of 50.0 m, and a wind-power conversion efficiency of 25%. The turbine operates in an area with an average wind-power density of 500 watts/m2 at 50 m altitude. How much electrical energy (in kWh) can the wind turbine generate in […]
What are some free natural powered things like wind power?
i already have solar powered things but i have to have the price of some things powered naturally like wind power water power and i need to know to price i have looked all over the internet thanks for your help
Rep. Honda presents a gift to UN Secretary-General Ban Ki-moon
Image taken on 2009-10-08 21:42:12 by congressman_honda.
Impact on specific steam consumption of turbine by improving power factor of generator?
We have 6 TG sets of 20, 8, 3*2, 2.5*2 MW capacity. All the alternators are designed at 0.8 pf. They are operated in island mode due to plant requirement and system constraint. Power factor of these alternators rvary in the range of 0.75 to 0.85. We have analysed steam consumption trends of these turbines […]
What direction should solar panels face if built in the Southern Hemisphere?
If solar panels were on a solar home built in the Southern Hemisphere, should they face north, south, east, or west? and why?
CSU – Space Lab (Ion Propulsion)
This video highlights the work being done at Colorado State University’s Space Lab working with Ion Propulsion. If you would like to know more about CSU’s Engineering programs please go to www.engr.colostate.edu.
Do you think that hydroelectric energy is a reliable energy resource for a safe and clean environment?
Ok! Hi. I have a research paper for English, and my topic is hydroelectric energy. I am having a hard time deciding whether or no hydroelectric energy is a reliable enregy resource for a safe and clean environment. To check it up, go t Wikipedia.I need help! :) Thx
Geothermal Energy: Harnessing the Heat Beneath Your Feet
Right below your feet is a source of renewable energy that is largely untapped. It heats groundwater by conduction and convection as it travels toward the surface of the earth. Lawrence Livermore National Lab scientists Carol Bruton and John Ziagos explain how geothermal energy can be used to generate electricity or heat buildings. Series: Science […]