# The Naked Scientists Forum

### Author Topic: Geothermal pump system, efficiency.  (Read 2081 times)

#### Heikki Rinnemaa

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##### Geothermal pump system, efficiency.
« on: 10/03/2011 19:50:09 »
MoHei. :)

Geothermal pump system make energy by using electricity.

When pump-system rise heat-energy example 2 kwh it need electric about 1 kwh.

If we make electric-generator heat/electric we can make cascade-system,,then efficiency is better.

Image what i want to say,,

Original system
1kwh makes 2 kwh, three pump 3kwh make 6 kwh.

1 kwh make 2 kwh, three pump 1kwh makes 4 kwh.

four pump,,1kwh makes 5 kwh,,,etc.

Hmm,,who make this heat/electric-generator?

And when system has start to operation,
then last pump can start to feed electricy to first pump
and then we dont need any outside electric power,,,

« Last Edit: 10/03/2011 19:54:30 by Heikki Rinnemaa »

#### Heikki Rinnemaa

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##### Geothermal pump system, efficiency.
« Reply #1 on: 10/03/2011 20:00:20 »
This picture systems running and we take electric to first pump from last pump.

So 3kwh comes to geopump-heat systems,,and we dont need to take electric from outer,,all comes from ground-heat.

Systems works also air-heating-systems,,,where 1 kwh make 2 kwh etc.

Perhaps,,,:)

#### Geezer

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##### Geothermal pump system, efficiency.
« Reply #2 on: 10/03/2011 20:10:58 »
Good idea, but I'm afraid it's not that simple

To convert heat into electricity, you first need to convert the heat into mechanical power that can drive a generator. The conversion from heat to mechanical power requires some sort of heat engine.

The efficiency of a heat engine is limited by the change in the absolute temperature of its working fluid. Unfortunately, you can't raise the temperature much with a heat pump, so the efficiency will be extremely low. You'll actually get less electricity out than you put in.

We could solve this problem if we had a "heat-multiplier" to raise the temperature that didn't require any other energy source, but, as far as I know, there is no such thing.

#### Heikki Rinnemaa

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##### Geothermal pump system, efficiency.
« Reply #3 on: 10/03/2011 20:23:46 »

yes,,

main thing is that how we can make from 1kwh-heat-energy to 1kwh-electric energy,,,hmm,,,

or can we make heat-motor directly,, so heat rotate some how that pump,,,

heat/electric-generator,, need of cource something new technical idea,,,

#### peppercorn

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##### Geothermal pump system, efficiency.
« Reply #4 on: 10/03/2011 21:03:43 »
main thing is that how we can make from 1kwh-heat-energy to 1kwh-electric energy,,,hmm,,,
We can't. No energy conversion process is 100% efficient.

or can we make heat-motor directly,, so heat rotate some how that pump,,,
heat/electric-generator,, need of cource something new technical idea,,,
You're describing a heat engine, to run an electric generator.
Two stage of conversion means 2 stages of loss - that's what we have at the moment & it is at best around 55% efficient - look up CCGT.

#### Heikki Rinnemaa

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##### Geothermal pump system, efficiency.
« Reply #5 on: 12/03/2011 05:46:45 »
Hi.

I dont know this technology todays or what is future, means heat/electric-generator,,,
but theoretical when i calculate this geothermal pump system kwh this mathematical theory gives possibilityes to make heat without outside electiricy power.

Calculate more that heat-flow,,kwh,,values,,

#### The Naked Scientists Forum

##### Geothermal pump system, efficiency.
« Reply #5 on: 12/03/2011 05:46:45 »