Skip to main content

Questions tagged [power-generation]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1 vote
0 answers
44 views

Do utilities ever disconnect solar panels in cases of low demand?

This question asked something that was predicated on "solar roof installations [being] disconnected from [the] grid" for low demand. Do utilities ever disconnect solar installations for low ...
user1683793's user avatar
  • 1,050
2 votes
1 answer
72 views

How much coal is needed to generate electricity for 1 person?

In one month a person uses $852$ kWh of electricity. Using a fossil-fueled vapor power plant, find how much coal is needed for one person. The assumptions are: Boiler efficiency of the Rankine cycle ...
Eric Brown's user avatar
0 votes
0 answers
20 views

Mass flow rate through a turbine in order to produce a 852 kWh

Over a $30$-day period, $852$ kWh of energy is produced by an electric generator, which has an efficiency of $80$%. The generator is spun by an ideal turbine. What is the mass flow rate, in $\frac{kg}{...
Eric Brown's user avatar
2 votes
1 answer
56 views

Is the electrical grid a centralized, decentralized, or distributed network? Which type is most efficient?

Is the electrical grid a centralized, decentralized, or distributed network? Each dot represents a generating station, consumer, or relay of electricity: Which type is the most efficient (has the ...
Geremia's user avatar
  • 407
3 votes
1 answer
82 views

What's the smallest possible nuclear power generator?

Nuclear microreactors like Westinghouse's eVinci are small enough to fit on a flatbed semi-truck, and NuScale Power's small modular reactor (SMR) is relatively small, too; but are there smaller ...
Geremia's user avatar
  • 407
0 votes
0 answers
18 views

High temperature in seal oil vacuum pump (not in the bearing), steam power plant. Why the seal oil vacuum pump suddenly increased in temperature?

Seal oil vacuum pump in steam power plant, suddenly have temperature increased, it's in the pump's body, not in the bearing. Why is that happen? I noticed that temperature of main seal oil tank in ...
Ferdiansyah Zhultriza's user avatar
0 votes
3 answers
118 views

Why don't power plants ALSO use smoke and water vapor to generate electricity?

Most power plants work by heating water in order to create steam that is then used to turn turbines which then generates electricity. As a side effect of generating this heat, there is usually some ...
HomegrownPotatoes's user avatar
1 vote
0 answers
50 views

Electric motors and Internal Combustion Engines compared

I know that Internal Combustion engines are rated in terms of peak power developed, while electric motors are generally specified in terms of continuous power output. Is there a good way to determine ...
Slartibartfast's user avatar
0 votes
0 answers
24 views

Would it be feasible to use the water vapor produced from hydrogen internal combustion engines to power a steam generator in a car?

In a standard internal combustion engine, exhaust temperatures typically approach 400-500 degrees Celsius for standard applications. If we consider that the primary exhaust gas of hydrogen engines is ...
Anon's user avatar
  • 1
0 votes
1 answer
55 views

Viability of bladeless wind power generation

I have recently thought of two designs for bladeless wind power generation; And They both essentially ionizes the incoming wind which then passes through a coil, the flow of charged wind particles ...
Rayyan Javed's user avatar
0 votes
1 answer
60 views

natural gas-fired power plants

I live in Tunisia, a country of 12 million inhabitants where natural gas (provided essentially by Algeria) is used in power plants. I'd like to know how it is that natural gas can contain so much ...
Aminos's user avatar
  • 123
0 votes
1 answer
104 views

Why does a car generator employs an alternator (i.e. AC) when power supply is provided by a battery (i.e. DC)?

An alternator generates AC current, whereas batteries (as far as I know) provide/are charged with DC current. So I'm wondering, how is this apparent mismatch explained? Do car manufacturers employ a ...
temporary_pigeon's user avatar
2 votes
3 answers
143 views

Is thermal expansion of water a consideration in steam power plants? If so, how is it managed?

I understand in residential plumbing, that a thermal expansion tank is needed before the hot water tank. From my understanding this is to allow for the water in the hot water tank to expand, instead ...
kpottebaum's user avatar
0 votes
0 answers
41 views

How to determine the efficacy and potential energy of hydro power energy storage?

The project I'm thinking about building a cheap DIY hydro energy storage (like a battery) system. I can build it but so far I can't really figure out the calculations to validate my idea and where to ...
Bob Ortiz's user avatar
  • 123
1 vote
0 answers
700 views

Standards for the sign of the power factor; IEC and IEEE; is there an ANSI standard?

Working with some power factor measurement, this article (reference: https://www.se.com/ww/en/faqs/FA212521/) has this interesting bit: Issue: Understanding and interpreting the sign of a power factor ...
asylumax's user avatar
  • 181
0 votes
1 answer
40 views

How to match a synchronous generator with a powered shaft?

Given is a shaft powered by a steam turbine that rotates unloaded (i.e without generator) at $ \omega $ rad/s and a torque of $T$ Nm. How would one match a generator to extract power requiring a ...
jessegerritsen's user avatar
-1 votes
1 answer
25 views

How are a Horizontal Axis Wind Turbine's blades joined to the hub, allowing them to rotate?

I know its a basic question for this site. But I couldn't find the answer on google so I beseech thee.
Hisham's user avatar
  • 109
1 vote
3 answers
211 views

why can't you hybridise an internal combustion engine with a steam turbine

According to the internet, an internal combustion engine is powered by the pressure differential when the fuel expands into gas and has a maximum thermal efficiency of 50%. And a steam turbine is ...
Lorry Laurence mcLarry's user avatar
0 votes
1 answer
94 views

Wind generator and heater (high power load) connected directly

I am thinking about the building house heating system like this: Outside my house I put 12V 1000W wind turbine, for example, like this. Inside my house I connect directly without any converter/adapter/...
Zlelik's user avatar
  • 115
0 votes
0 answers
30 views

Solar bimetal/dilation power generator

What attempts are there been at converting on Earth's surface, night/day temperature differences, so that the dilation of a large bimetal is converted into mechanical work ? At small scale it would ...
user avatar
1 vote
3 answers
243 views

Would it be possible to generate electricity from continental drift?

It definitely wouldn't be practical compared to other sources of energy, but given currently plausible technology, would it be theoretically possible to use the movement of tectonic plates (as in ...
A Curious Inquirer's user avatar
0 votes
2 answers
128 views

Most efficient electricity generation in a wide flow of water

I'm wondering what the best method is for generating electricity in a wide river. The assumptions here is that it's a strong flowing river. It is very wide and we're allowed to put an electricity ...
Trioxidane's user avatar
1 vote
1 answer
65 views

Nuclear, waste heat stirling applications

Could the waste heat normally expelled from nuclear plants run low temperature stirling engines or does it need a specific temperature threshold?
LazyReader's user avatar
0 votes
1 answer
46 views

Would the below thermal generator work properly and provide surplus energy?

Since thermoelectric generators make electricity through thermal flux, could a device that mixes NaOH and HCl on one side (heat) and Ba(OH)2•8H2O and NH4SCN (cold) be efficient? Could it produce more ...
Caleb Saunders's user avatar
0 votes
3 answers
262 views

Measurement of actual carbon dioxide mass emitted from a diesel engine

I am looking for a solution to measure the actual total mass of carbon dioxide (CO2) emitted from a diesel engine used for power generation. Infrared CO2 sensors generally measure the gas ...
AEW's user avatar
  • 103
0 votes
0 answers
17 views

Load/power shedding for DIY power generation - how does it work?

I am putting together a simple DIY solar generation unit for an off grid cabin. The cabin will "pull" (i.e. present) a variable load to the generator over a given time period. Suppose I have ...
Homunculus Reticulli's user avatar