Instant Regret - After buying an Electric Car

That aint right. HUD shows it is charging at 0.9kW. This thing should charge at 7kW+ from a residential source.

To be fair though, I have no idea of what her range and necessary travelling habits are, but she can run it for 1/3 of the maximum range on 30% of the charge and just keep on plugging it in every night... and at stops with chargers...

AND she does not HAVE TOO run it on a full charge from the get go, nor does she have to wait around for it to fully charge up.....

AND she can go to places with super chargers, sit down for a coffee and drag out her laptop... and work on the road.....

To ChatGPT

In terms of overall efficiency from the power to mine brown coal, to burn it, to make steam, to turn a generator, to make electricity, to then distribute it via the grids, to chargers and then to charge the batteries, what is the typical conversion efficiency from the chemical energy in the brown coal, to power available to drive the EV?

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The conversion efficiency from the chemical energy in brown coal to power available to drive an electric vehicle (EV) involves several steps, each with its own efficiency losses. Here’s a rough breakdown of the process:

1. **Chemical Energy to Electricity (Coal Power Plant)**
- **Mining and Transport of Brown Coal:** Typically, this involves an efficiency loss, but it's often small compared to other stages.
- **Combustion of Brown Coal:** Brown coal (lignite) has a relatively low energy content compared to other coals. Combustion efficiency is around 30-40% due to heat losses and incomplete combustion.
- **Boiler Efficiency:** Converting the heat from combustion into steam generally has an efficiency of about 30-40%.
- **Steam Turbine Efficiency:** Steam turbines, which convert steam energy into mechanical energy, usually operate at about 30-40% efficiency.
- **Generator Efficiency:** Electrical generators that convert mechanical energy into electrical energy are generally about 90-95% efficient.

Overall, the combined efficiency from brown coal to electricity is typically around 20-30%.

2. **Electricity Transmission and Distribution**
- Transmission losses are generally around 5-10%.

3. **Charging an EV Battery**
- Charging efficiency from electricity to battery storage is about 90-95%.

4. **Battery to Wheels**
- The efficiency of converting stored electrical energy in a battery to mechanical energy in the EV is around 90-95%.

So, putting it all together:

1. **Brown Coal to Electricity:** ~20-30%
2. **Electricity Transmission Losses:** ~5-10%
3. **Charging Efficiency:** ~90-95%
4. **Battery to Wheels Efficiency:** ~90-95%

Let’s do a rough calculation:

- Start with 100 units of chemical energy in brown coal.
- After combustion and conversion to electricity: 20-30 units of electrical energy.
- After transmission losses: 18-28.5 units of electrical energy.
- After charging efficiency: 16.2-27 units of energy in the battery.
- After battery to wheels efficiency: 14.58-25.65 units of usable energy at the wheels.

Thus, the typical overall conversion efficiency from the chemical energy in brown coal to the power available to drive an EV is approximately 15-25%.

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What is the typical efficiency of converting crude oil to petrol, to driving a car - manual gear box, fuel injected?

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The conversion efficiency from crude oil to the energy used to drive a car involves several stages, each with its own efficiency:

1. **Crude Oil Extraction and Transport**
- **Extraction Efficiency:** The process of extracting crude oil has losses due to the energy required for drilling and pumping. Typically, this is not directly accounted for in efficiency calculations, but it can be significant.

2. **Refining Crude Oil to Petrol**
- **Refining Efficiency:** Converting crude oil to gasoline (petrol) involves several processes, including distillation and chemical treatment. The overall refining efficiency is around 85-90%. This means that about 85-90% of the energy in the crude oil is converted into usable gasoline, with the remainder lost as heat and other byproducts.

3. **Combustion in Engine**
- **Engine Efficiency:** The efficiency of converting the energy in gasoline to mechanical energy in an internal combustion engine is relatively low. For a typical gasoline engine with a manual gearbox, fuel injection, and other conventional technologies, the efficiency is about 20-30%. This takes into account energy losses due to friction, heat dissipation, and incomplete combustion.

Combining these stages:

1. **Crude Oil to Gasoline:** ~85-90% efficient.
2. **Gasoline Combustion in Engine:** ~20-30% efficient.

Let’s calculate the overall efficiency from crude oil to the power used to drive a car:

- Start with 100 units of energy in crude oil.
- After refining: 85-90 units of energy in gasoline.
- After combustion in the engine: 17-27 units of mechanical energy used to drive the car.

Thus, the typical overall conversion efficiency from crude oil to the mechanical energy available to drive a car is approximately 17-27%. This is somewhat similar to the efficiency of converting brown coal to electricity for an EV, though the processes and losses are different.

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What is the typical efficiency of converting crude oil to petrol, to driving a direct chain drive petrol motor to the back wheel, on a bicycle?

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The efficiency of converting crude oil to petrol and then using that petrol to drive a bicycle involves several stages. Here’s a breakdown:

1. **Crude Oil Extraction and Refining:**
- **Crude Oil to Gasoline:** The refining process converts crude oil into gasoline with an efficiency of about 85-90%. This means that about 85-90% of the energy in the crude oil ends up as usable gasoline.

2. **Combustion in Engine:**
- **Engine Efficiency:** For a small, high-efficiency petrol engine (such as those used in motorized bicycles), the efficiency might be slightly higher than the average car engine, around 25-35%. This includes the efficiency of converting the energy in gasoline to mechanical energy.

3. **Mechanical Transmission:**
- **Direct Chain Drive Efficiency:** In a bicycle with a direct chain drive, the efficiency of the chain drive is typically around 90-98%. This efficiency can vary depending on the quality and condition of the chain, gears, and other mechanical components.

Combining these stages:

1. **Crude Oil to Gasoline:** ~85-90% efficient.
2. **Gasoline Combustion in Engine:** ~25-35% efficient.
3. **Chain Drive Efficiency:** ~90-98% efficient.

Let’s calculate the overall efficiency from crude oil to the mechanical energy used to drive a bicycle:

- Start with 100 units of energy in crude oil.
- After refining: 85-90 units of energy in gasoline.
- After combustion in the engine: 21.25-31.5 units of mechanical energy (25-35% of 85-90 units).
- After chain drive efficiency: 19.13-30.87 units of mechanical energy (90-98% of 21.25-31.5 units).

So, the typical overall efficiency from crude oil to the mechanical energy used to drive a bicycle with a direct chain drive is approximately 19-31%. This efficiency is slightly higher than the efficiency of driving an electric vehicle due to the higher mechanical efficiency of the chain drive system compared to the losses in electric power transmission and battery storage.

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A recently published paper provides a useful review of competition cycling aerodynamics. It looks at the results of a wide range of academic studies, highlighting the significant advances made in the last 5 to 10 years.

The power required to overcome aerodynamic drag rises with the cube of velocity, so riding at 50km/h takes almost twice as much power as riding at 40km/h. At racing speed, around 80% of a cyclist’s power goes into overcoming aerodynamic drag. This is largely because a bike and rider are not very streamlined, resulting in a turbulent wake.

The authors quote drag coefficients, Cd, of 0.8 for upright and 0.6 for TT positions. These compare with 0.07 for a recumbent bike with fairing, indicating that there is huge room for improvement.

Wind tunnels, originally used in the aerospace and automotive industries, are now being designed specifically for cycling, though no specific standards have been adopted. These provide a simplification of environmental conditions, but they can be used to study air flow for different body positions and equipment. Mannequins are often used in research, as one of the difficulties for riders is the ability to repeat and maintain exactly the same position. Some tunnels employ cameras to track movements. Usually a drag area measurement, CdA, is reported, rather than Cd, thereby avoiding uncertainty due to measurement of frontal area, though this can be estimated by counting pixels in a image.

One thing that makes cycling particularly complex is the action of pedalling. This creates asymmetric high drag forces as one leg goes up and the other goes down, resulting in variations of up to 20% relative to a horizontal crank position.

Cycling has been studied using computational fluid dynamics, helping to save on wind tunnel costs. These use fine mesh models to calculate details of flow separation and pressure variations across the cyclist’s body. The better models are in good agreement with wind tunnel experiments.

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What is the typical efficiency of converting crude oil to petrol, to driving a direct chain drive petrol motor to the back wheel, on a streamlined recumbent bicycle with a coefficient of drag of 0.25? Approximately how many liters per Km fuel consumption ought to be reasonably obtainable using a 50cc two stroke motor?

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To determine the efficiency of converting crude oil to petrol and driving a streamlined recumbent bicycle with a 50cc two-stroke engine, let's break down the process and then estimate the fuel consumption:

### Efficiency Breakdown

1. **Crude Oil to Gasoline:**
- **Refining Efficiency:** Typically around 85-90%.

2. **Gasoline Combustion in Engine:**
- **Engine Efficiency:** Two-stroke engines are generally less efficient than four-stroke engines but can have efficiencies of around 25-35%. A high-efficiency 50cc two-stroke engine might be towards the higher end of this range.

3. **Mechanical Transmission (Direct Chain Drive):**
- **Chain Drive Efficiency:** Approximately 90-98% efficient.

4. **Aerodynamic Drag:**
- For a streamlined recumbent bicycle with a coefficient of drag (\(C_d\)) of 0.25, aerodynamic drag is relatively low, which improves efficiency. However, drag also depends on the frontal area and speed.

Combining these factors:

- **Crude Oil to Gasoline:** ~85-90%
- **Gasoline Combustion in Engine:** ~25-35%
- **Chain Drive Efficiency:** ~90-98%

Overall efficiency calculation:

1. Start with 100 units of energy in crude oil.
2. After refining: 85-90 units of energy in gasoline.
3. After combustion in the engine: 21.25-31.5 units of mechanical energy (25-35% of 85-90 units).
4. After chain drive efficiency: 19.13-30.87 units of mechanical energy (90-98% of 21.25-31.5 units).

Thus, the typical overall efficiency from crude oil to the mechanical energy at the back wheel of a streamlined recumbent bicycle is approximately 19-31%.

### Fuel Consumption Estimation

To estimate fuel consumption, consider:

1. **Fuel Consumption Rate:** A high-efficiency 50cc two-stroke engine might have a fuel consumption rate of around 2-4 liters per 100 kilometers (L/100 km) under optimal conditions.

2. **Streamlined Design:** The low drag coefficient of 0.25 helps reduce the fuel consumption compared to non-streamlined vehicles. For such a bike, fuel consumption could be on the lower end of the typical range for a 50cc two-stroke engine.

For a streamlined recumbent bicycle with a 50cc two-stroke engine, a reasonable fuel consumption figure might be:

- **Approximately 2-3 liters per 100 kilometers.**

This estimate accounts for the efficiencies discussed and the streamlined design which improves aerodynamic performance.

Damn... Who needs fifteen minute prisons when you have electric cars!?! LOL! Err fifteen minute cities...I meant.

The dumb fucking bitch just assumed.....

Just plug it in over night and it will run for a month.... and it only costs like 10c.

Too fucking stupid to be able to do the THINKING and the PENCIL TO PAPER calculations.

100 Km needs XYZ Kilowatt hours of charging - and on a 10A 110V supply = ???????

Read the owners manual and ask questions BEFORE BUYING?

Do the calculations?

A full charge on a flat battery from a wall socket = 100 hours.

I will use about 1/4 of a charge every 2 days.... = 25 - 28 hours charge time....

6pm to 7am = 11 hours per night.

2 days and 2 nights = ~26 hours of charge time and only 22 hours of charging time available......

Oooooops... Charging up all night, every night and all week end..... Owwwwwwwwwwww

Sure is a life of luxury.... rewire the house to a higher charge rate system?????

Very expensive.

I could fill up with petrol once a week....

No I am retarded wammens - hear me whine, about the patriarchy all the time....



Why are WOMEN so fucking stupid?