PHYSICS heelp! how much energy is transferred away from the power plant as heat:?
An efficiency of 0.33 means that 0.33 times 1055 MW is how much power is NOT wasted. That means that 1055 MW - 0.33*(1055 MW) equals the power that is wasted. Wasted power = 1055 MW - 0.33*(1055 MW) = 1055 MW*(1 - 0.33) = 0.67*1055 MW. Optional Information: Power and energy are not the same thing. To get an energy value, multiply the power value by how many hours it operates at that power, to calculate what the energy is in MW*hr. Houses and businesses have electric meters that do this calculation for kW power, and the owners are charged for how many kW* hours of energy they use every month. One MW equals 1,000 kW, so it is a lot of power. of power.
A power plant has a power output of 1453MW and operates with an efficiency of 34.1 per- cent. Excess energy is?
A power plant has a power output of 1453MW and operates with an efficiency of 34.1 per- cent. Excess energy is carried away as heat from the plant to a nearby river that has a flow rate of 1.3 × 106 kg/s. How much energy is transferred as heat to the river each second? Answer in units of J/s
A nuclear power plant has a power output of 1000 MW and operates with an efficiency of 33%. If excess energy i?
So, you've got 2000 MW of energy going into the river. The river is flowing at 1,000,000 kg/s. Determine the energy output of the plant in MW per second (2000/3600). Determine the heat capacity of the water per second (4200 Joules/kg/°C). Calculate how much temperature the water will increase for each second and you have your answer.
What happens when energy produced by power plants is not used, is it wasted?
There is no "unused" energy.We produce energy by several means that turn generators.Like a bicycle rider, we pedal harder when more energy is needed, we pedal more easily when less energy is needed.Not pedaling hard saves energy, like when you go downhill. Pedaling hard to go uphill makes you use more energy. If we all turn off lights and A/C the electrical generator eases up and uses less fuel and so no energy is produced and thrown away. It turns the same speed but the motor/steam turbine effort is reduced and so uses less energy. There's a bit of a lag in large steam turbine systems because coal is already burning, but what happens is that the temperature of the steam goes up storing energy as temperature, the coal feed rate is reduced accordingly and as the steam is condensed in the turbine the temperature reduces to the set point and fuel feed rate will be adjusted again to the lower load.Power is lost due to combustion/turbine efficicency but that is a proportional amount. The same percentage is lost for small changes in load. Transmission line losses are proportional to load - if the load is reduced, line losses will also be reduced by the same proportion.
A nuclear power plant has an electrical power output of 1518 MW and operates with an efficiency of 35%. If exc?
A nuclear power plant has an electrical power output of 1518 MW and operates with an efficiency of 35%. If excess energy is carried away from the plant by a river with a flow rate of 1.2 × 106 kg/s, what is the rise in temper- ature of the flowing water? Answer in units of C Please help!! Thanks!! 12
A nuclear power plant has an electrical power output of 900 MW and operates with an efficiency of 33%.?
at the efficiency of 33%, every hour energy of 1827MW energy is wasted. This goes to the water. In one hour the water that flows out is 1.0106 x 3600 kgs. Now you have the energy, mass of the water and you need to calculate change in temperature. Take the specific heat of water and calculate it.
A nuclear power plant has an electrical power output of 1140 MW and operates with an... Physics question.?
Messy, messy! Keep your work neat and clear, it helps. So now, if the efficiency is 50%, then 1140MW are the waste (excess power, NOT energy, units must be consistent!). Check: efficiency=Power out/Power In=1140/(1140+1140)=.5 Next, from Q=mcΔT, where Q=energy (heath), m is the mass, c is the specific heat (cal/kgK), k=degree kelvin and ΔT is the temperature rise consider 1 second time span In 1 second 1140MWx1sec=1140x10^6 J are picked up by 1.1x10^6 kg of water whose specific heat, c, is 1000cal/kgK=4190J/kgK Then, substituting, 1140x10^6=1.1x10^6x4190ΔT and you can finish the calculation.
If sea levels are rising at alarming/dangerous rates, why can't we pump "excess" water into/onto barren lands, such as the Sahara and/or Atacama deserts?
I had not thought about your question, but I think it is an interesting start to a brainstorming idea. Maybe a geo-engineer can pursue it.If large amounts of water are to be sequestered from the oceans, there are realistically 4 places that are good candidates.GreenlandAntarcticaExisting underground aquifersThe deserts you refer toThe best option would not be pumping salt water per se, but to somehow augment the natural water cycle to induce rain/snow falling on:the existing ice sheetsland supplying water to the aquifersthe desertsMany deserts were once seas or large lakes and I hypothesize they could theoretically be refilled with fresh water given sufficient rainfall in the area.Aquifers can hold water for millions of years. Unfortunately, humanity is currently pumping massive amounts of water out of many huge aquifers.Antarctic ice sheets take millions of years to flow from the continents interior to the continent’s edge where it melts or calves off as icebergs. Antarctica has been accumulating ice for the last 14,000 years and continues to do so, but potentially the rate of accumulation could be accelerated.Greenland is not quite as effective, but rain / snow falling there is sequestered for many thousands of years. I’m not sure if the science is clear as relates to if Greenland is currently gaining or losing ice mass on the multi-decade time scale.[Edit: Greenland gained overall ice mass in the years before 2000. It lost ice mass at the land sea edge from roughly 2000–2015. It gained ice mass in the 2 years starting Sept 1, 2016 an Sept 1, 2017. Regardless new snow precipitation far from the coast will take thousands of years to flow to the coast.]What could be done to increase the precipitation rates at the required locations, I don’t know, but in part the very global warming that is melting the ice sheets at the edges is also adding humidity to the air and increasing the overall precipitation rates.Potentially there are ways to seed increased precipitation in areas of the globe that would allow the water to be sequestered for millennia or longer.
A nuclear power plant has an electrical power output of 1500 MW?
Let me try some hints or starters, let me also say some of the heat in a real situation may be used for industrial processes. .65 * 1500 MW = 975 MW (HEAT) 975 x 10 ^ 6 Joules per Hour Now find Joules per second. 975 x 10 ^ 6 Joules per Hour / (3,600 S / Hour) => 271,000 J / S Now find the Joules imparted into each KG of Water: (271,000 J / S) / (106 Kg / S) => 2,560 J / KG Now get the specific heat of water: 4186 Joules required to heat 1 Kg 1 degree K Now (2,560 J / Kg ) / 4190 J / Kg K 0.61 degrees Kelvin Hotter Assuming no mistakes but the procedure is correct.