Posts tagged ‘heat’

We Don’t Lose Most of Our Heat Through Our Heads

By Chad Upton | Editor

Winter hat, stocking cap, beanie or toque; whatever you call it, it keeps your head warm. But, it doesn’t necessarily keep you warm.

An old US Army survival manual suggested wearing a hat since “40 to 45 percent of body heat” is lost through your head. This recommendation is thought to have come from a military experiment over 60 years ago when participants were dressed from neck to toe in Arctic clothing, but no headwear. Over time, this has snowballed into “most” heat is lost through our heads. (more…)

November 27, 2012 at 2:00 am 1 comment

Why Aluminum Foil is Dull on One Side

By Kaye Nemec

Hopefully you’ve all read Chad’s previous posts about aluminum foil retainers or how to properly use aluminum foil in the microwave. The post about aluminum foil retainers is a life changer.

I learned something else recently that adds to the growing list of things you never knew you needed to know about aluminum foil.

There are two, distinct sides to standard aluminum foil – the shiny side and the dull side. During the last phase of the rolling process, two sheets of foil are put through the rollers. The rollers themselves are oiled and, therefore, the side of the foil that touches the roller comes out shinier than the other. There are rumors that one side of the foil reflects heat better than the other and that the reflection should be considered during cooking. However, the Reynolds Wrap website states, “Actually, it makes no difference which side of the aluminum foil you use—both sides do the same fine job of cooking, freezing and storing food.”

P.S. If you place a piece of aluminum foil underneath your ironing board cover the heat will reflect off of it which means you are ironing both sides of your garment at once!

Broken Secrets

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Sources: Reynolds Wrap, The Straight Dope, Life Hackery

Photo: Emillian Robert Vicol (cc)

April 6, 2011 at 2:00 am 3 comments

Exhaust Fans Help Cool Your Home During Summer

The upper floor of your home is likely the warmest place in your home. It’s not usually a big deal in the winter, but it can be very uncomfortable in the summer. It happens because hot air rises.

The ceiling of your upper floor also has the most insulation of any place in your home. It’s there because hot air rises — in the winter, you don’t want to lose that heat. It’s the same reason you put a hat on your head in the winter.

In the summer, that thick insulation in your attic is doing the same thing it does in the winter, trapping that heat on your upper floor. If you have a central heating/cooling system, it should suck hot air from the upper floor and mix it with cooler air. But, it’s not always running and it can’t always keep up with the hot air that is produced inside your home, from people, electronics and appliances.

A good solution is to run the ceiling exhaust fan in a central bathroom on the upper floor during the hottest hours of the day. To help, you can get an automatic timer control light switch; these can be used to run the fan and have it automatically shutoff after a certain amount of time — this might also be useful after somebody uses the toilet.

In some regions, it is even part of the building code that an on/off switch for the upper floor hallway bathroom fan is placed next to the thermostat on the main floor. It’s there so you can turn on the exhaust fan when you turn on the air conditioner (there is also a switch in the bathroom to control it from there). This is not a widespread building code, but it’s worth having a look beside your thermostat. If you’ve got a light switch there that doesn’t do anything, try it again and listen for the hallway fan.

Broken Secrets | By: Chad Upton

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Sources: MSU, About.com

June 2, 2010 at 5:00 am Leave a comment

The Mall of America Does Not Have a Central Heating System

By Chad Upton | Editor

In case you’re not familiar with the Mall of America, it’s a 2.5 million sq. ft. shopping center in Bloomington Minnesota, a suburb of the “Twin Cities” (Minneapolis and Saint Paul). The mall opened in 1992 and contains more than 520 stores, two seven story parking garages with a total of 20,000 parking spaces, a giant aquarium and of course an indoor amusement park.

Photo by Dave Wallick

I was there in 1993 on a big family road trip and it was amazing. A building of this size seems like it should have a massive heating system to stay comfortable during winter months. But, the engineers had a much more creative solution in mind. (more…)

March 2, 2010 at 12:35 am 23 comments

Warm Your Car Up Faster

My friend Todd told me about this secret many years ago. He has rebuilt more cars in his suburban home garage than anyone I know.

I met Todd at my first part time job, we used to work early weekend mornings during high school. I was too young to have a driver’s license, so my dedicated parents would always drive me.

That was before remote starters, so I would usually start the car a few minutes before leaving. Actually, that’s not true — my Dad was usually the one starting the car a few minutes before I was ready to leave, which was about 10 minutes after I told him I would be ready to leave.

It didn’t make much difference to the car — it was still cold for at least half the trip. On the rare occasion that I started the car, I would turn the heater to its hottest setting and turn the fan to full blast. That’s actually the slowest way to warm the car, so lets talk more about the fastest way. (more…)

February 24, 2010 at 1:09 am 22 comments


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