A prototype metal cylinder with a liquid coolant has converted the heat from fire into an inexpensive chilling agent.
Almost two billion people live without a reliable source of electricity, but they may not have to live without refrigeration.
In a simple, rugged twist on the gas-fired refrigerator, a prototype gadget uses heat from fire to create a cheap source of cooling.
The cylindrical device, 10 centimeters in diameter and 20 centimeters long, has a chamber on each end -- one made of steel and the other of aluminum. The chambers are separated by a ceramic insulator fitted with two valves.
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Manufacturing in the United States is in trouble. That's bad news not just for the country's economy but for the future of innovation.
This document is part of the “How-To Guide for Most Common Measurements” centralized resource portal. This tutorial provides a detailed guide for measurement and device considerations to take temperature measurements using thermocouples. Get an introduction to thermocouples, which are inexpensive sensing devices widely used with PC-based data acquisition systems. Also review some specific thermocouple examples and learn how thermocouples work and ways to integrate them into a data acquisition measurement system.
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