Maintaining your cool
The people in Hokkaido, Japan’s northernmost island, have taken to heart the injunction, “If you’re stuck with a lemon, make lemonade.”
Hokkaido’s problem isn’t anything as tropical as a surfeit of lemons—it’s the opposite. What they’re stuck with is a surplus of snow. Hokkaido’s annual snowfall exceeds five meters, more than double the totals of such balmy climes as Helsinki, Oslo, Innsbruck, Albertville, Minneapolis, Calgary, and Anchorage.
But according to this report in the Daily Mainichi, they’ve figured out a way to do something practical with it. The Bibai Natural Energy Research Organization in the local city of Bibai are working out ways to use snow for air-conditioning and refrigeration in the summer. The Itogumi Construction Co. has come up with a snow cooling system, and it’s in use right now is a small section of the lobby at Bibai’s City Hall.
Here’s how they do it:
A pool loaded into a container holds a 2-ton ice block and water, and the cooled water is sent to two separate cooling systems. The cooling systems can sufficiently cool a 30-tatami-mat room. A 2-ton snow block is put into the pool every Saturday.
Tatami mats are usually used as a standard for measuring room sizes. Traditionally, they have been roughly 90 cm by 180 cm, or 3 feet by 6 feet.

When I read this, I had to wonder about the expenditures for energy to keep the snow frozen during the warm weather until they get ready to use it. It turns out they’re still working on cutting costs, but they think they can get the overall price down to 700 yen (US$ 6.23) per ton in the near future. They also want to create a system of delivering snow blocks to households after receiving customer orders.
And that reminds me of another hoary expression—the more things change, the more things remain the same. In other words, the new technology using snow for climate control will result in the delivery of big blocks of snow to households, in the same way that, years ago, big blocks of ice were delivered to households for iceboxes, used to keep food cold until the modern refrigerator was created.
While we’re on the subject of Hokkaido and snow, here are some photos of the Sapporo Snow Festival taken by an Australian. And if you want to know what it’s like to live through a Hokkaido winter, this site from the Japanese government will give you an idea.
Cool Biz, which is the brainchild of
Though Japan is obliged to curb its greenhouse gas emissions by 6% from the 1990 level by 2012 under Kyoto, emissions in fiscal 2002 were 7.6% higher than in 1990. Japan’s Environment Ministry originally said that a carbon tax is required in order to reduce greenhouse gas emissions, but the government’s final plan merely called for discussion of a tax “in a serious and comprehensive manner.”
Usually by now the air is warming on the Kanto Plain and the cherry blossoms (the natural kind) are thinking about starting to get ready to bloom.