RE: The Charger - Does it really exist ?31 Jan 2023 03:58
The brilliant engineering minds (BEMs) at In-spirit claim, on the In-spirit Web site.
“A Spanish waste plant currently has a system to collect waste heat from its three engines but it is only around 28% efficient and therefore not cost-effective enough to generate extra electricity”
“Our technology is 92% efficient, allowing the company to maximise effectiveness of the whole system and start regaining costs”
1. So are the BEMs at in-spirit claiming their system can collect 92% of the waste heat from 3 engines versus 28% for the Spanish system. Now that would be an amazing feat. You will truly become rich if it were possible. No, its impossible to collect 98% of the energy from an engine.
2. So are they claiming that the WHR is 92% efficient i.e. of the waste heat that comes in, 92% is converted to electricity? No another claim that would be impossible.
3. What is being claimed, by a BEM at In-spirit is, 92% of the energy collected by the WHR system is converted to useful energy, which is the efficiency figure of the Charger. This could be true for the Charger WHEN BURNING GAS.
BUT not when you are collecting waste heat and powering the Stirling engine from it !
When converting waste heat to electricity the Stirling engine is only about 36% efficient, if we are to believe the claims of In-spirit. The waste heat from the 3 engines going into the system is now coming out of WHR system minus that heat converted to electricity.
The owners of the Spanish waste plant have only gained 6.4 kW of electricity they didn’t gain any heat ! THEY HAD THAT HEAT TO BEGIN WITH, in fact they actually lost some to make the electricity.
Imagine they were collecting the waste heat to heat offices, they would have to use some of the electricity to supplement the heat they lost in the Stirling and that would subtract from the 36% figure.
In the Charger mCHP system, the waste heat going into the Stirling comes out to heat your home and thus is useful energy, giving the Charger around 90-92% efficiency - supposedly.
These people don’t understand what their system is supposed to do !!!