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Questions tagged [cooling]

Cooling a space for human comfort, cooling food so it doesn't go bad soon (refrigerator) or cooling electrical devices to prevent overheating (computer servers). See also [air-conditioning]

-1
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2answers
123 views

Will Koolatron cooler cool warm stuff?

We don't have any electricity, so we're thinking of purchasing this Koolatron cooler. Most of the drinks I put in it (refreshment cans, water bottles, etc) will be warm/room-temperature. Will it ...
5
votes
1answer
178 views

How much temperature reduction will I get from a green grass-covered roof?

I want to put a green roof on my top floor by using a plastic caret, adding a 4" layer of soil and planting grass. I want to cover the whole roof with this. Will it help to reduce the heat gain from ...
5
votes
1answer
698 views

Most sustainable way to cool a dorm-room

My first year of college has finally ended, and I will be moving from a suite style room to a single room, both student dorming. My room will have temperature control, however it will be restricted ...
6
votes
3answers
425 views

What techniques or solutions are available for reducing heat absorption by walls?

I live in tropical region. Have pretty hot summers (44 degree C). The question is regarding houses built with brick and mortar (walls) and reinforced concrete flat roofs. In this forum I have come ...
5
votes
1answer
220 views

Choice between Expanded or Extruded Polystyrene Insulation Boards

Am living in Lahore, Pakistan, and these days in process of my house construction. Note, here locally we have concrete flat roofs. Summer time maximum temperature upto 50C, and in winters minimum ...
5
votes
1answer
204 views

Need critique of my idea for a passive heating and cooling system for a tent/waterbed

The Idea A small thin waterbed mattress inside a tent cot that is filled with water that's heated by the sun during the day and cooled at night. The Details Get this tent cot and water mattress (...
3
votes
1answer
64 views

How do I keep my room on the first floor cool all day and night?

I live in a duplex bungalow. The room on the first floor is about 250 sqft but has only two windows of 12 sqft each. The roof is at 10 ft level. The roof is open to sunlight and is used to dry clothes ...
6
votes
3answers
88 views

Why refrigerant cooler is more popular than evaporative cooler?

When I look at how houses/offices are cooled in my area I see that refrigerant cooler is far more popular than evaporative cooler. I did not find any company which serves evaporative cooler services/...
6
votes
2answers
57 views

How do I get airflow through my building

I am trying to build a passively cooled building in equatorial Indonesia. Here is a rendering of the ground floor: There are existing structures on the left and right side of the building, however ...
9
votes
2answers
117 views

What is the rationale for a base temperature for degree-days of 12 degrees?

When evaluating the energy demand of a building, the weather conditions are supposed to be controlled for by calculating degree-days (sometimes also known as accumulated temperature difference). In ...
9
votes
1answer
94 views

Why do similar buildings use different types of cooling methods and which one is more environment friendly?

Which type of air conditioning is more environment friendly - doing the cooling per apartment or central cooling (for high rise residential buildings)? My understanding is that central cooling is ...
5
votes
2answers
143 views

Notifications for outside temperature negating need for air conditioning

How can I get automatic notifications that the outside temperature (in Sydney CBD) is below a certain threshold, and therefore the best option is to turn off the air conditioning and instead open the ...
4
votes
3answers
228 views

How can I more effectively cool my house by managing windows with outdoor temperature changes?

How can I more effectively cool cooling my house by managing windows with outdoor temperature changes? My current strategy I open all my windows when the temperature inside the house is warmer than ...
1
vote
1answer
207 views

What software should I use to design and simulate a solar-assisted cooling system? [closed]

I will be developing a solar-assisted absorption cooling system similar to the one described in the image attached. What software could I use to design and simulate a thermal system like the one ...
5
votes
5answers
4k views

How to keep a small room cool using wet curtains?

I hypothesize that Keeping curtains wet continuously will help in cooling a room through rapid evaporation with indoor celing fan set at full speed. So how to accomplish this and will it really keep ...
9
votes
1answer
133 views

How can I take advantage of winter cold to cool servers

How can I take advantage of freezing winter cold to cool my servers without exposing them to humidity?
10
votes
1answer
136 views

Is building vertically instead of horizontally in climate with large seasonal temperature changes more sustainable?

My main line of thinking would be that you would build tall skinny housing that would allow the heat to gather in the upper levels in the winter and the cooler air would gather in the basement/lowest ...
9
votes
2answers
224 views

How effective is free cooling

I live in the tropics, and during the summer it is very hot here. Today the air temp was low-mid 30C with 80% Relative Humidity. I live close to a stream, which I'd like to use for free-cooling. ...
7
votes
3answers
602 views

Want to build a portable solar refrigerator

I've got a 5v Peltier chip. What kind of and how many solar cells 4.5v 18mA do I need per 1 chip? I found these cells online on dealextreme, but there are also other different types. I'm lacking a ...
16
votes
4answers
78k views

Which refrigerant is used in today's refrigerators and how harmful is it?

I'm curious about which and how much of a refrigerant is commonly used in modern refrigerators (say, produced from 2000 onwards). How harmful is it for the environment? What is the ozone depletion ...
18
votes
8answers
2k views

What is an easy way to cool off during the summer without electricity?

What are some easy ways to stay cool during the day without using electricity?