'Super Cool Biz' campaign officially kicks-off

[Coligny]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it.

I want to fight this nonsense.

It's like for weaponz of mass destruction, one of those "if you repeat often enough it become true" (preferably saying it a least 5 times in front of a mirror in the dark...)

Candyman...

Candyman...

Candyman...

Candyman...

Can... yup I'm a pussy... (surprised ?)

[yanpa]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it.

I want to fight this nonsense.

It's the number laid down in the law, though how the makers of the law arrived at that figure I do not know.

[Taro Toporific]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it...

The J-government arbitrarily chose 28C (82.4F) since it offers the greatest energy savings.

The World Health Organisation states the legal upper temperature limit should be 24C.

The rich eco-hippy rule-of-thumb is to keep your home temperature difference of just 5C from outdoor temperatures. Each degree Centigrade difference in the temperature raised represents an energy saving of at least 5-10%.

References:
http://www.euro.who.int/__data/assets/p ... _sheet.pdf
http://www.euro.who.int/en/where-we-wor ... and-health
http://news.consumerreports.org/home/20 ... eview.html

[yanpa]

Which reminds me, I must get a thermometer, I *set* my A/C to 28ºC, but it always feels much cooler.

[wuchan]

I show this to people here and they shit their pants.

[Taro Toporific]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it...

Air-Conditioning Is an Environmental Quandary
NYTimes.com | August 18, 2012
...After the Fukushima earthquake and tsunami knocked out a big chunk of the country’s nuclear power, the Japanese government mandated vastly reduced energy consumption. To that end, lights have been dimmed and air-conditioners turned down or off, so that offices comply with the government-prescribed indoor summer temperature of 82.4 degrees (28 Celsius); some offices have tried as high as 86.
Unfortunately, studies by Shin-ichi Tanabe, a professor of architecture at Waseda University in Tokyo who has long been interested in “thermal comfort,” found that while workers tolerated dimmer light just fine, every degree rise in temperature above 25 Celsius (77 degrees Fahrenheit) resulted in a 2 percent drop in productivity. Over the course of the day that meant they accomplished 30 minutes less work, he said.
Other studies have found that with office temperatures between 82 and 86 degrees, symptoms like headache, drowsiness and difficulty concentrating increase, which may explain the drop in performance.
Worse still, perhaps, Mr. Tanabe calculated that the suffering was all for naught: When offices were kept above about 82 degrees, so many people were using inefficient fans at their desks that the total electricity consumption could be higher than if the building had been better cooled. “That’s just stupid,” he said.<Some studies from hot and humid Singapore also show that cooler is better when it comes to office work, said Mr. Wargocki, who is currently a visiting researcher at the National University there. Though people in Singapore tend to identify a range from about 68 to 75 degrees as “neutral” temperature -- neither hot nor cold-- studies found that work improved if the thermostat was lowered to about 72.
More...

[Screwed-down Hairdo]

I'm never productive no matter what the temperature is...I fucking hate working and do as little of it as possible.

[GomiGirl]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it...

Air-Conditioning Is an Environmental Quandary
NYTimes.com | August 18, 2012
..

Can somebody please translate this into Japanese and get it published FFS. This obsession with 28oC is a joke.

[Screwed-down Hairdo]

Can somebody please translate this into Japanese and get it published FFS. This obsession with 28oC is a joke.

Are you kidding?
It's a wonderful way for we barbarians to learn about one of Japan's unique four seasons...

[Coligny]

Can somebody please translate this into Japanese and get it published FFS. This obsession with 28oC is a joke.

THE WHOLE FUCKING COUNTRY IS A JOKE...

I think ya disconnected too much during yer vacashiunz...

[wuchan]

Where is the study that shows the 28oC is the best temp? Or has it just been drummed into the local consciousness that people have stopped questioning it...

Air-Conditioning Is an Environmental Quandary
NYTimes.com | August 18, 2012
..

Can somebody please translate this into Japanese and get it published FFS. This obsession with 28oC is a joke.

I just calmly change the temp to 24 every time I enter a new area. When the nazi in the room says "the gov....." I interrupt them, inform them 28 is a suggestion not a law then show them the graph above. If that doesn't work I lick my hand and rub it all over the thermostat.

[Coligny]

Your too soft, you should put your hand in your back pant, scratch your butt and fart THEN set the thermometer... This or take a piss against the wall... But I think that in werewolf code of honor that means that every female touching to thermostat become part of your harem... Might be a lose lose situation.

[Russell]

Cool Biz season begins across Japan

The government on Thursday launched its Cool Biz campaign again this year. Cool Biz, which will last until Oct 31, encourages workers to dress down, ditching their suits and ties for open-necked, short-sleeved shirts. It also encourages offices to turn down air conditioners to set office temperatures at 28 degrees Celsius.

More

[yanpa]

What are these "offices" of which they speak?

[GomiGirl]

28oC for airconditioners insane and unproductive.

[Russell]

Yes, I usually put the temperature at 26 degrees.

Unfortunately, our building management somehow restricts the airflow power of the aircons, so in order to make it 26 degrees inside, I need to set the temperature to 22 degrees.

Talking about efficiency...

[Wage Slave]

What are these "offices" of which they speak?

With you there. Ditto "suits" and "ties". What they?

I'm fine with the aircon at 28 degrees. If it's working properly the humidity is low enough that that is pretty comfortable for me. At most, I might turn on a fan to boost the effect a little. I did grow up in Iraq, Pakistan and Queensland in the days when air conditioning was almost unheard of though.

And the amount of energy saved is very significant, isn't it?

The Cool Biz campaign has proven highly effective in reducing energy usage. A research report shows that the typical office building in Tokyo has achieved an energy reduction of approximately 17% by raising the preset temperature of air-conditioning system thermostats from 26 degrees C to 28 degrees C.

Besides raising the preset temperature, Cool Biz also promotes:
Turning off unneeded cooling equipment
Cutting out sunlight using blinds, curtains and balcony plants
Minimizing the opening or closing of doors and windows
Sprinkling water on streets, sidewalks, etc.

https://www.mhi-global.com/discover/earth/action/care_energy.html

[Coligny]

What are these "offices" of which they speak?

What is this "dressing" them speaking ab00t ?

... Time for a new season of my "n00d woodworking" serie...

[IparryU]

What are these "offices" of which they speak?

BASF (in Roppongi Hills Mori Tower) apparently does it.
Google Japan does whatev the fug they want. They vote from the rumors I heard.
Gree does it

[IparryU]

28oC for airconditioners insane and unproductive.

I prefer the mid 30s... but I am a beaner, so the heat perks me up for some reason.

[Mike Oxlong]

28oC for airconditioners insane and unproductive.

I prefer the mid 30s... but I am a beaner, so the heat perks me up for some reason.

Yeah, but it's a dry heat...

[IparryU]

28oC for airconditioners insane and unproductive.

I prefer the mid 30s... but I am a beaner, so the heat perks me up for some reason.

Yeah, but it's a dry heat...

true dat. The humididty just makes me want to take off my shirt and lay on the grass with some booze.

[Coligny]

Isn't there a cost benefit chart somewhere showing at which setting range turning on the aircon is just burning money. Because while 21-23 is the optimal for humanz I'm pretty sure that AC power use is not linear.

If it's 30 and turn AC on, set it up for 28... You'r not part of the solution... You are a governemental guidelines following part of the problem...

If when you do something, you sacrifice the result in the name of economy... You're just one more lecturing idiot... Before, there was heavy use of the little flow flush, which was living the loo dirty... So it was not an economy of water to flush the loo, but a waste of water not to flush it... Some screws and epoxy glue got rid of the little flush function...

[yanpa]

What are these "offices" of which they speak?

What is this "dressing" them speaking ab00t ?

Yeah, I'm sure the trendy app company on the USA left coast would not like to know my satorial state while I was analyzing their database problems early this morning.

[matsuki]

Isn't there a cost benefit chart somewhere showing at which setting range turning on the aircon is just burning money. Because while 21-23 is the optimal for humanz I'm pretty sure that AC power use is not linear.

If it's 30 and turn AC on, set it up for 28... You'r not part of the solution... You are a governemental guidelines following part of the problem...

If when you do something, you sacrifice the result in the name of economy... You're just one more lecturing idiot... Before, there was heavy use of the little flow flush, which was living the loo dirty... So it was not an economy of water to flush the loo, but a waste of water not to flush it... Some screws and epoxy glue got rid of the little flush function...

I always wondered why the single flush function became so popular in cuntry with weather like there is. Rain collection or simply pumping/filtering the numa land your home is built on for "free" water for the toilets seems like a better idea.

[Wage Slave]

Isn't there a cost benefit chart somewhere showing at which setting range turning on the aircon is just burning money. Because while 21-23 is the optimal for humanz I'm pretty sure that AC power use is not linear.

What are you driving at? That it uses a lot of power just to turn the thing on and then progressively smaller amounts to lower the temperature one more degree? I'd be interested to see that chart.

It's running the compressor that eats up the power, isn't it? The fans use very little power. The more heat you remove from the room the more the compressor runs and the more power you use. About 8% more power for each degree you lower the temperature? Or is that way off?

[Russell]

I always wondered why the single flush function became so popular in cuntry with weather like there is. Rain collection or simply pumping/filtering the numa land your home is built on for "free" water for the toilets seems like a better idea.

Behind my house there is a 1 meter wide waterway, but I am not allowed to pump water out of it, because it is for the rice fields.

If I want water for my garden or so, I need to collect it myself.

Even for watering my garden, it is advantageous to use rainwater, because the sewer bill is related to the water bill. I will be charged for used water even if it does not end up in the sewers.

[Coligny]

Isn't there a cost benefit chart somewhere showing at which setting range turning on the aircon is just burning money. Because while 21-23 is the optimal for humanz I'm pretty sure that AC power use is not linear.

What are you driving at? That it uses a lot of power just to turn the thing on and then progressively smaller amounts to lower the temperature one more degree? I'd be interested to see that chart.

It's running the compressor that eats up the power, isn't it? The fans use very little power. The more heat you remove from the room the more the compressor runs and the more power you use. About 8% more power for each degree you lower the temperature? Or is that way off?

I'm driving at base power use of the aircon.

1- The once it's on, it's wasted power no matter the set temp. (Base consumption, equivalent of idling on a car in neutral)

2- Then the cost from on to uncomfortable

3- The cost of on to comfortable

Cause for me, turning aircon to set it to an uncomfortable level is a gigantic waste.

As an example... Cars... Sure the faster you go the more you use fuel... But below a certain speed you also waste fuel compared to the distance travelled. It's just a little better than idling. In fact the whole fast=waste apply only when aerodynamic forces start to be factorable. Side example, for some F1 aero setup, at speed high enough, the downforces makes turning a tight corner safe despite the high lateral G's the tires stay stuck to the road, while at slightly slower speeds, the loss of downforces makes the turn impossible the tires becoming hopelessly loose on the road.

[Wage Slave]

The base power of the aircon (or idle) is running the fans without any added cooling. That is very low - well under 100 watts. And it delivers a clear benefit insofar as running any fan does in hot weather. Now once you start cooling then the compressor needs to do its stuff and that uses a lot more power. Easily over a kilowatt even in a small model. It doesn't run continuously unless the machine is really running flat out. It cycles on and off as needed. The more cooling you set it for, the more often it cycles and the higher the power consumption. And just one degree lower or higher will cause a fall or rise of 8% or so.

From there I agree that you are right that if the room is still a lot too hot then the marginal cost/marginal utility balance has not been reached and the machine should be set to a lower temperature.

The real argument is then over what temperature is comfortable enough to work and play in? I would say that 28 degrees is fine as long as:

1. People are dressed appropriately
2. Humidity is below 40% This is a happy by-product of properly installed air conditioning
3. Fan power from the unit is sufficient to keep the air (at 28) moving. Or supplementary fans are used if not.

I am sure some people will say 28 is unbearable. I suppose it is a matter of taking a utilitarian approach - greatest happiness for the greatest number. If no-one is happy at 28 then it needs to be a bit lower, If most are comfortable then 28 it should be.

[Russell]

As an aside, I read somewhere that setting your aircon in the "remove humidity mode" consumes quite a lot of power, to the extent that it is apparently advised to switch it to regular cooling mode.

Is this true, and, if so, why?