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Is this advice correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the Crystalloid's freezing point. Pour 3 tbsp (51 g) of salt into each of your 3 plast...
Question
classical-mechanics
#3: Post edited
by
TextKit
·
2021-04-10T07:34:05Z (over 3 years ago)
- 1. Is [this advice](https://www.wikihow.com/Make-an-Easy-Homemade-Air-Conditioner-from-a-Fan-and-Water-Bottles) correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the [Crystalloid](https://www.easybiologyclass.com/difference-between-colloids-and-crystalloids-a-comparison-table/)'s freezing point.
- > **Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles.** Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoons (51 g) of table salt per bottle. Put the caps back on and shake the bottles to thoroughly mix the salt.
2. I live in a studio flat. I know of the [Law of Thermodynamics](https://old.reddit.com/r/askscience/comments/3cuekw/is_a_diy_air_conditioner_a_thermodynamically_good/cszsr8j/), also [here](https://old.reddit.com/r/askscience/comments/utuw2/would_a_homemade_air_cooler_that_uses_cooper/c4yhbug/) – but my plan is different. Where I live, night time is way cooler than day time. I'll freeze the bottles over night, because even if my freezer heats up from freezing my water bottles, my night room temperature will still below. During day time when it's hot, I'll take out the frozen bottles and place them in front of my fan to air condition my studio flat. Does this work? [I read Quora](https://www.quora.com/Does-putting-a-frozen-water-bootle-in-front-on-a-fan-make-it-move-colder-air-around-the-room).- [![enter image description here][1]][1]
- [1]: https://i.stack.imgur.com/OCWcY.jpg
- 1. Is [this advice](https://www.wikihow.com/Make-an-Easy-Homemade-Air-Conditioner-from-a-Fan-and-Water-Bottles) correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the [Crystalloid](https://www.easybiologyclass.com/difference-between-colloids-and-crystalloids-a-comparison-table/)'s freezing point.
- > **Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles.** Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoons (51 g) of table salt per bottle. Put the caps back on and shake the bottles to thoroughly mix the salt.
- 2. I live in a studio flat. I know of the [Law of Thermodynamics](https://old.reddit.com/r/askscience/comments/3cuekw/is_a_diy_air_conditioner_a_thermodynamically_good/cszsr8j/), also [here](https://old.reddit.com/r/askscience/comments/utuw2/would_a_homemade_air_cooler_that_uses_cooper/c4yhbug/) – but my plan is different. Where I live, night time is way cooler than day time. I'll freeze the bottles over night, because even if my freezer heats up more than usual, my night room temperature will still be cool enough. During day time when it's hot, I'll place the frozen bottles in front of my fan to air condition my studio flat. Does this work? [I read Quora](https://www.quora.com/Does-putting-a-frozen-water-bootle-in-front-on-a-fan-make-it-move-colder-air-around-the-room).
- [![enter image description here][1]][1]
- [1]: https://i.stack.imgur.com/OCWcY.jpg
#2: Post edited
by
TextKit
·
2021-04-10T07:32:42Z (over 3 years ago)
1. I'm just double checking [this advice](https://www.wikihow.com/Make-an-Easy-Homemade-Air-Conditioner-from-a-Fan-and-Water-Bottles). Are they alluding to Freezing Point Depression? Are they correct?- > **Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles.** Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoons (51 g) of table salt per bottle. Put the caps back on and shake the bottles to thoroughly mix the salt.
- 2. I live in a studio flat. I know of the [Law of Thermodynamics](https://old.reddit.com/r/askscience/comments/3cuekw/is_a_diy_air_conditioner_a_thermodynamically_good/cszsr8j/), also [here](https://old.reddit.com/r/askscience/comments/utuw2/would_a_homemade_air_cooler_that_uses_cooper/c4yhbug/) – but my plan is different. Where I live, night time is way cooler than day time. I'll freeze the bottles over night, because even if my freezer heats up from freezing my water bottles, my night room temperature will still below. During day time when it's hot, I'll take out the frozen bottles and place them in front of my fan to air condition my studio flat. Does this work? [I read Quora](https://www.quora.com/Does-putting-a-frozen-water-bootle-in-front-on-a-fan-make-it-move-colder-air-around-the-room).
- [![enter image description here][1]][1]
- [1]: https://i.stack.imgur.com/OCWcY.jpg
- 1. Is [this advice](https://www.wikihow.com/Make-an-Easy-Homemade-Air-Conditioner-from-a-Fan-and-Water-Bottles) correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the [Crystalloid](https://www.easybiologyclass.com/difference-between-colloids-and-crystalloids-a-comparison-table/)'s freezing point.
- > **Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles.** Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoons (51 g) of table salt per bottle. Put the caps back on and shake the bottles to thoroughly mix the salt.
- 2. I live in a studio flat. I know of the [Law of Thermodynamics](https://old.reddit.com/r/askscience/comments/3cuekw/is_a_diy_air_conditioner_a_thermodynamically_good/cszsr8j/), also [here](https://old.reddit.com/r/askscience/comments/utuw2/would_a_homemade_air_cooler_that_uses_cooper/c4yhbug/) – but my plan is different. Where I live, night time is way cooler than day time. I'll freeze the bottles over night, because even if my freezer heats up from freezing my water bottles, my night room temperature will still below. During day time when it's hot, I'll take out the frozen bottles and place them in front of my fan to air condition my studio flat. Does this work? [I read Quora](https://www.quora.com/Does-putting-a-frozen-water-bootle-in-front-on-a-fan-make-it-move-colder-air-around-the-room).
- [![enter image description here][1]][1]
- [1]: https://i.stack.imgur.com/OCWcY.jpg
#1: Initial revision
by
TextKit
·
2021-04-10T07:30:15Z (over 3 years ago)
Is it rational to freeze water bottles during colder nights, and place them in front of a fan during warmer days?
1. I'm just double checking [this advice](https://www.wikihow.com/Make-an-Easy-Homemade-Air-Conditioner-from-a-Fan-and-Water-Bottles). Are they alluding to Freezing Point Depression? Are they correct? > **Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles.** Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoons (51 g) of table salt per bottle. Put the caps back on and shake the bottles to thoroughly mix the salt. 2. I live in a studio flat. I know of the [Law of Thermodynamics](https://old.reddit.com/r/askscience/comments/3cuekw/is_a_diy_air_conditioner_a_thermodynamically_good/cszsr8j/), also [here](https://old.reddit.com/r/askscience/comments/utuw2/would_a_homemade_air_cooler_that_uses_cooper/c4yhbug/) – but my plan is different. Where I live, night time is way cooler than day time. I'll freeze the bottles over night, because even if my freezer heats up from freezing my water bottles, my night room temperature will still below. During day time when it's hot, I'll take out the frozen bottles and place them in front of my fan to air condition my studio flat. Does this work? [I read Quora](https://www.quora.com/Does-putting-a-frozen-water-bootle-in-front-on-a-fan-make-it-move-colder-air-around-the-room). [![enter image description here][1]][1] [1]: https://i.stack.imgur.com/OCWcY.jpg