Hey I’m Greg…
And I’m Jimmy…
And Honda Racing F1 have asked us to show you exactly how their master engineers achieve energy savings as big as this
Yes so this balloon doesn’t look much like a Formula One racing car, but they do share one thing in common. 
They both reuse energy that would otherwise be lost as hot air.
Now you loose a lot of heat energy out the back of your exhaust pipe on a car, but just like the hot air produced by this burner the molecules in those hot air gasses are excited
Just like this
Now Temperature is just a number we use to represent the amount of kinetic energy that the particles or molecules in a gas have.
If you increase the temperature you increase the amount of energy you give them, they jiggle around more they bounce of each other more and they bounce of what ever surface they are hitting, which for us is the inside of the balloon.
Increase the temperature, you increase the pressure.
Which in the case of our balloon here, means that as we heat up the molecules inside, they expand filling our balloon.
Come on then, let’s take it up.
Slowly, slowly slowly. Ready, ready, yes
We’ve lift off…
Lift off. I’ve got it. It’s got some oomph
So it’s about 45 - 50 degrees C in there, which is of course really warm, but in an F1 power unit the hot exhaust gasses reach twenty times that. Almost a thousand degrees C.
That would normally be a lot of wasted heat energy, but the F1 engineers have come up with a brilliant way of capturing it and re using it.
In our balloon the hot air is trapped forcing it up, but in an F1 Power Unit that hot air is forced out and down through the exhaust.
When you ignite the fuel in the I.C.E., the hot expanding exhaust gases rush out through the exhaust pipe. They’ve got a lot of kinetic Energy. They’ve got a lot of force.
When we put a turbine in their way in the exhaust pipe, we can capture and harness that power
We’ve already seen how a turbine powers a Turbocharger, but with so much excess heat in that exhaust driving that turbine we can use that excess power to drive something else. But to do that, we are going to need something bigger than this.
Wicked! Bigger means more fire right?
Oh Yea!
Bigger flames…Mate, what do I do with this?
So, this is our version of a turbine, which is normally found inside the exhaust pipe of a Formula 1 car.  I’ve super-sized it so we can see the action better and at the bottom there, there is a special type of motor called a MGU-H
The MGU-H converts heat energy into electrical energy and you can see…hit it mate…you can see how it’s done, the heat energy pushes up against the turbine, it turns the turbine. That turns the motor the MGU-H and that produces electrical energy. You can see the lights down the bottom .
And that energy can be put back into the car when it’s needed.
But that burner has nowhere near the same amount of power as you get in a Formula 1 power unit. Inside a Formula 1  I.C.E., you've got 750 explosions every second and all of that heat from all of those explosions is directed towards the turbine to make it spin.
To achieve something like that we are going to have to change our heat source to something that represents 750 explosions every second
Yea we are going have to super, super size.
Yea so that's 750 rockets strapped to a turbine all with a one second fuse and I’ve got the ignition system.
A rocket powered turbine. That's not normal.
No it isn’t.  Yeah…nice knowing you mate. Nice knowing you.
So hopefully we are going to get a massive burst of power from our MGU-H into our junction box and this time I’m going to send that energy to our Energy Store so we can capture all that electricity we generate.
I don't think this has ever been done this big before.
I doubt it.
I’ve no idea how far we need to go back, but let’s start walking.
I’m going that way.
Right then. Genuinely a little bit nervous. Ready?
Yea here we go.
Arm. Fire!
Go on son.  Woooahh
Yea. Its still smoking.
That was incredible
That was absolutely amazing and just look at how much electrical energy we have managed to store.
Now the absolutely crazy thing is that during an F1 race, 750 explosions are happening every second constantly which means that the MGU-H can constantly be converting that heat energy into electrical energy  and unlike the MGU-K the amount of electrical energy that the MGU-H is allowed to convert is unlimited.
Now that gives a real opportunity for F1 teams to gain a huge advantage to maximize when and how they actually use that energy.
And just like in our turbine, the energy from the MGU-H in the car can also be sent to the energy store here and can be saved for later use.
But not only that it is cleverer because that energy can also be sent to the Turbocharger and that's pretty impressive because what that does is stop turbolag when the turbo could slow down by speeding it up, keeping the I.C.E. working at maximum power
Also it can be sent via the MGU-K directly to power the wheels
That’s why the MGU-H is such an important piece of tech in the battle for efficient F1 racing.
Check out our next episode where just like our junction box we will be looking at a super computer that con do over a million measurements a second. That's the cars on-board computer.
Right we’ve got a little bit of cleaning up to do. 
Only 749 to go.
Subscribe to the Honda Racing F1 YouTube channel to make sure you can see the next film as soon as it goes live.  Right lets clean up – it’s going to take a while.
I’ll get the mop.
