开云体育

S, Simon Quellen Field pi?e:

I am not clear on why you think idling a car is out of the question.

Just don't have space for car. I park it far away of lodge. And is not so quiet.

Unlike running my whole farm during a power outage, all you need

to do is run a fridge until you have replaced the energy you lost by

opening the fridge door. If you keep the fridge in the car, then any

driving you do should be more than enough to get it cold again.

I dissagre.. The fridge in house turn's on for few minutes every half hour. (but it's good one!) the cheapo is even worse. But my problem isnt power outage but lack of power. I had inverter in home to use it with car to power deep frezer in home if necesary. In the lodge that is for constant use.

An idling engine 10 meters from the house will not make a noticeable

noise.

can't park 10m away. (Can wery close or far away)

The $250 fridge and $50 inverter are probably cheaper than any

homemade solution using a vacuum.

I hope to make it under $300

Cooling a liter of water by one degree costs you a?kilo-calorie?(one food calorie),

assuming your cooling method is 100% efficient. The vacuum fridge you describe

will be lucky to be 10% efficient. So to cool 5 liters from 30 degrees to 7 degrees,

you need 5 * 10 * (30 - 7) = 1,150 calories of food if you want to do this by hand

using a hand pump.

Haha. I'm not crazy. I need to evacuate system down to pressure and then leave it here. The zeolite in container will adsorb the water wapour and make operation continous. The problem come when zeolite saturate. Then I need to regenerate it. It can be done with sun, woodstove, or anithing capable to heat to 200 centigrade. After that I need to reassemble all thing and evacuate again. As I calculated I need to regenerate aprox twice a week. (When come to lodge and before I leave it - if I wan't to be in cold state)

Looking up the calories for various activities, we find that 1,150 calories is?

3 hours of walking briskly, or running 13 kilometers in 1 hour and four minutes.

Trying to expend 1,150 calories squeezing a hand pump with one hand will

take the better part of a day. I have one of those hand pumps, and I can pump

it for perhaps 10 minutes before my hand is too fatigued to continue. So you

will need a lot of friends to help you. But they will eat a lot, so you need a bigger

fridge, and then...

Misleading. I (hope) need to pump under 5 minutes. The zeolite will do the rest.

If you are going to use human power, you are much better off using a bicycle

with a generator, and powering the $250 fridge from that. It will still take 1.33

hours of bicycling.

Again misleaded...

BUT...
Simon thanks. Your calculations and effort to write that post is great. You just miss that I need to evacuate system not to pump to all the watter evaporate.
... and I my lodge I wan't as much stuf to be green. No gass generators and similar alowed.

So please again let's stay on topic. I know that this is possible as I already tested it. (borrowed pump) So just need cheap pump. probably hand operated. the volume of system is aprox 5L and need vaccum of aprox 10mBar. (7.5 torr).? Thanks.

Slavko