I can answer the second question:
Generally, hot-blooded mammals transform 90% of the energy they get from food into heat.
So using a cat for heating your room is about 90% as effective as burning cat food in an oven.
Here’s some napkin math for where I live:
1kg of firewood has 4kWh = 4000 kcal
which is about equivalent to 1kg of really cheap dry cat food
1kg of firewood costs about 40 cents
1kg of cheap dry cat food costs about 1,20€
So, cat-based heating is about 3.3x more expensive than burning pre-dried, commercially purchased firewood.
(all of these prices heavily depend on how much you buy in bulk, though. And if you care about your cat’s well-being, you’re gonna spend 2x more on its food)
That’s why I wrote it’s 3.3x more expensive, not 3x
10% of the energy is wasted on things like bodily functions, growing, running around and bringing joy to people.
I can answer the second question:
Generally, hot-blooded mammals transform 90% of the energy they get from food into heat.
So using a cat for heating your room is about 90% as effective as burning cat food in an oven.
Here’s some napkin math for where I live:
1kg of firewood has 4kWh = 4000 kcal
which is about equivalent to 1kg of really cheap dry cat food
1kg of firewood costs about 40 cents
1kg of cheap dry cat food costs about 1,20€
So, cat-based heating is about 3.3x more expensive than burning pre-dried, commercially purchased firewood.
(all of these prices heavily depend on how much you buy in bulk, though. And if you care about your cat’s well-being, you’re gonna spend 2x more on its food)
But cat based heating has a lower efficiency, they do not turn all energy into heat.
That’s why I wrote it’s 3.3x more expensive, not 3x
10% of the energy is wasted on things like bodily functions, growing, running around and bringing joy to people.
You sure it’s only 10%? I would have estimated about 90%
No, 90% is just for heat.
c/theydidthemath?
How would it affect the math if you sold cat videos as NFTs?
In a market economy, the value of a good increases with demand and decreases with supply.
On the Internet, there is an unlimited supply of cat videos, therefore their market value is 0.