Express Employment Professionals. Hack N Mod - Amazingly Cool Hacks, Mods, and DIY Projects. Wiring Diagrams : Electrical Online. How Freezers Work" Nearly every modern American home has a freezer, most likely attached to a refrigerator. But why do we freeze food? To store for later the food we wouldn't be able to get to in a couple of days if we put it in the refrigerator. So that huge pot of beef stew goes into the freezer, alongside that revolutionary 20th century invention: the frozen dinner.
But the need to store food for later -- or to create ice for keeping drinks cooled -- is far older than leftovers and TV dinners. It goes back about as far as civilization itself. Thousands of years ago, ancient Mesopotamians discovered that cold food rotted more slowly than food left outside [source: Shepherd]. This was how food was preserved for centuries until about the late 1600s, when England and France created their own version with the invention of the ice house [source: Martin]. By then, science and industry had established the idea of mechanical refrigeration, in which a circulating chemical gas kept things in a compartment cold. Working with heat pumps and compressors. HVAC Trouble. Evolution of Maintenance Man. In the world of maintenance, there are two kinds of companies - those who are modernizing their maintenance programs and those who will. Companies on the trailing edge face one of two risks depending on their industry and geography: Losing revenue to competition as demand for production capacity heats up.
Losing profits to competitors who export from low-cost labor markets abroad. Averting these risks requires a process called change. Some of these companies may have to leapfrog over evolutionary and move straight to revolutionary. Proactive Man Today’s modern maintenance professional is a knowledge worker. Proactive Man epitomizes the concept of the knowledge worker in the maintenance and reliability profession. Think about your own company. Ask for Forgiveness not Permission You may be saying “all of this sounds great, but let’s get real - management will never figure it out.” One last suggestion … perhaps the best plan doesn’t depend on management at all.
Maintenance Connection. Hardware/Usefully Tools & Tips. Understanding Big Stuff. Testing & Unions. My Sodexo. Home-Improvement.