Janet32\" post_id=\"1952651\" time=\"1576032529\" user_id=\"165769:

We have this Iwata air cooler and I am wondering if how do I stop my air cooler from smelling?

POA Teacher:

Installed a new aircon last week.

Set the temp at 26C. Out of curiosity, I put a thermometer on my bed. Came back later to look: showed 24C :rahrah:
But that was probably partly due to the fact that the vent was directed straight at the bed. The rest of the room wasn't 24C

atrecord:

Yup, i understand that there is a need to look at the specs of an aircon vs the room size. It is possible to cool down the room, but because i had set fan speed at min it was slow and not so cooling.


But But But hor, my main point when bringing that up was to highlight that when even a real aircon is struggling to cool temp down, there will be no chance that an air-cooler can do it at all.

atrecord:

When temp is 31 deg C, my split unit aircon has difficulty in cooling the room down to 26 deg C, when I set it to 25 deg C. I'm sure if i switch it to higher speed and lower temp it will be achieveable, but as it is, it's stretching.

...

atrecord:

When temp is 31 deg C, my split unit aircon has difficulty in cooling the room down to 26 deg C, when I set it to 25 deg C. I'm sure if i switch it to higher speed and lower temp it will be achieveable, but as it is, it's stretching.


For the portable aircon at my parents' place, it is likely to be a bigger challenge to cool down to 26 deg C. Again, if switch to high and set low temp, might be possible.

With the fan, it simply ventilates the room. If the room is 31 deg C, it will remain at 31 deg C with fan, but you will feel the breeze (warm one that is, as i'm sure you experienced it before).


It is important to have a compressor of sufficient capacity to cool down the room, even if the ambient temperature is 31 C. Could it be that your air con's power is too low for the size of your room?

With air-coolers, I imagine that with the water evaporation and therefore carrying with it latent heat, the temp might drop by maybe 1 (or 2) deg C, but I think that will be the most. I don't see it going down by 4-5 deg C, and will bet my last dollar on it.

From experience, there is no way an air cooler will bring down the temperature by 4-5 degree. At most 1-2 degrees.

Dr.Ta:

Air cooler works by drawing dry air in, pushing e dry air thru some filter which is wet by e water flowing. As e dry air passes thru, evaporation takes place and heat energy in e air is required to evaporate e water thus air temperature is reduced. At the same time, the air get wetter too, as in increase in humidity. For it to work well, u need an open air path, meaning a Window opened behind n in front of e cooler. This is to facilitate the input of dry air n the output of wet air, which neess to leave e room or else e humidity in e room will increase dramatically.

Coolers r effective in humidity range od 30 to 70. Beyond that, little evaporation occurs n thus no effective.
If used in a closed room, it will cool e air if humidity is low to begin the w bu5 will soon become ineffective when the humiditu exceeds 80. Worse, e temp will go back up n u will sweating as e air is now super wet!

Just to add, humidity tends to hover around 55 to 65 at night drying e dry season. So do ur maths in terms of hownlong e air cooler can be effective

In short, ita not effective yo combat haze heat. Since one would tend to cclose windows when psi is up.

atrecord:

I am fairly confident in saying that air coolers are not useful at all. I was once toying with the idea too, many hot seasons ago. Then at my workplace, where there was a non-aircon reception area, the staff was complaining of temperature too and so management bought an air-cooler. Ended up totally no difference. It was stored away after 2 weeks. I of course gave up the idea myself too.


Then a few years after that, when I needed to find a solution for a room in my parents' place (4 rm flat with aircon in living and one bedroom only), after much consideration we got a portable aircon. The house has all casement windows in all rooms + living room. The room has 3 'units' of casement window and one was to be sacrificed for the exhaust. The installer used wood to block almost two-third or three-quarter of that window unit, and the remaining was a plastic strip that came with the portable aircon. These were screwed together in place to the window's frame, with the window pushed out and staying permanently open. So the whole space left by the window was blocked completely by the wood + plastic strip.

Portable aircon can work for casement window too.

But boy, was it noisy.... I asked the installer how to make it less noisy, and he said it was not possible for portable aircon. He explained that unlike multisplit aircons, where compressor is found outside the room/house, and the room only has a blower, portable aircon blower is together with the compressor. The compressor is the motor that works the aircon. If need aircon, the motor needs to work = noise is a must.

And even for a portable aircon, it was barely sufficient to cool down a bedroom to around 26 deg C, used together with a box fan. Ok, I bought the lowest-spec one (I think 6000 btu) at i think around $300 when on offer, and the old 28-yr-old HDB room is considered larger than newer ones, but what I'm trying to say is that air-cooler will not likely lower the temperature sufficiently to your expected (or accepted) comfort level.

atrecord:

I am fairly confident in saying that air coolers are not useful at all. I was once toying with the idea too, many hot seasons ago. Then at my workplace, where there was a non-aircon reception area, the staff was complaining of temperature too and so management bought an air-cooler. Ended up totally no difference. It was stored away after 2 weeks. I of course gave up the idea myself too.


Then a few years after that, when I needed to find a solution for a room in my parents' place (4 rm flat with aircon in living and one bedroom only), after much consideration we got a portable aircon. The house has all casement windows in all rooms + living room. The room has 3 'units' of casement window and one was to be sacrificed for the exhaust. The installer used wood to block almost two-third or three-quarter of that window unit, and the remaining was a plastic strip that came with the portable aircon. These were screwed together in place to the window's frame, with the window pushed out and staying permanently open. So the whole space left by the window was blocked completely by the wood + plastic strip.

Portable aircon can work for casement window too.

But boy, was it noisy.... I asked the installer how to make it less noisy, and he said it was not possible for portable aircon. He explained that unlike multisplit aircons, where compressor is found outside the room/house, and the room only has a blower, portable aircon blower is together with the compressor. The compressor is the motor that works the aircon. If need aircon, the motor needs to work = noise is a must.

And even for a portable aircon, it was barely sufficient to cool down a bedroom to around 26 deg C, used together with a box fan. Ok, I bought the lowest-spec one (I think 6000 btu) at i think around $300 when on offer, and the old 28-yr-old HDB room is considered larger than newer ones, but what I'm trying to say is that air-cooler will not likely lower the temperature sufficiently to your expected (or accepted) comfort level.

atrecord:

I am fairly confident in saying that air coolers are not useful at all. I was once toying with the idea too, many hot seasons ago. Then at my workplace, where there was a non-aircon reception area, the staff was complaining of temperature too and so management bought an air-cooler. Ended up totally no difference. It was stored away after 2 weeks. I of course gave up the idea myself too.


Then a few years after that, when I needed to find a solution for a room in my parents' place (4 rm flat with aircon in living and one bedroom only), after much consideration we got a portable aircon. The house has all casement windows in all rooms + living room. The room has 3 'units' of casement window and one was to be sacrificed for the exhaust. The installer used wood to block almost two-third or three-quarter of that window unit, and the remaining was a plastic strip that came with the portable aircon. These were screwed together in place to the window's frame, with the window pushed out and staying permanently open. So the whole space left by the window was blocked completely by the wood + plastic strip.

Portable aircon can work for casement window too.

But boy, was it noisy.... I asked the installer how to make it less noisy, and he said it was not possible for portable aircon. He explained that unlike multisplit aircons, where compressor is found outside the room/house, and the room only has a blower, portable aircon blower is together with the compressor. The compressor is the motor that works the aircon. If need aircon, the motor needs to work = noise is a must.

And even for a portable aircon, it was barely sufficient to cool down a bedroom to around 26 deg C, used together with a box fan. Ok, I bought the lowest-spec one (I think 6000 btu) at i think around $300 when on offer, and the old 28-yr-old HDB room is considered larger than newer ones, but what I'm trying to say is that air-cooler will not likely lower the temperature sufficiently to your expected (or accepted) comfort level.

Way2GO:

kwcllf:

Portable air con is very troublesome as you need to stick the exhaust tube out of the room or window. I was told air coolers use very much less electricity compared to air con. As I have mentioned before, they are not the same in terms of cooling the room. But just trying to find an alternative that can make do for this hot period.

Aiyo, how much trouble is it to stick an exhaust tube out of d window n seal it? :faint:

Heat n humidity makes dis weather uncomfortable.
u can only remove humidity with an air-con system.
gud heat insulation n ventilation will help to keep d temperature down some, but may require more work at d onset.

I try to explain dis in layman’s terms.
D air cooler works on d idea of evaporation cooling effect.
Little or no evaporation -> little or no cooling effect.
Evaporation rate is dependent on air humidity.
SG’s humidity is high - >80% range.
How to get gud evaporative cooling effect in dis humidity?
If d salesman can answer dis question truthfully by explaining
how his air cooler can do so, then u can seriously consider buying.

Put it another way, ur body uses d same evaporative cooling effect by perspiration.
When u sweat in dis hot n humid climate, n d sweat is not evaporated fast enuf, u feel shiok?
same thing with d air cooler - not enuf evaporation, no shiok!

I hv nvr used an air cooler as I am not convinced dat it works in our weather.
I seriously think it is a waste of money.

U seemed half-sold on d idea of an air cooler.
If u do decide to buy n use one, please come back to make a field report here, can?