![]() ![]() That cooler, humid air is used to cool a metal surface, which in turn sucks heat out of the other stream of still-dry air. One runs past a thin layer of water, which absorbs energy and drops the air’s temperature. In the evaporative cooling step, the air is split into two streams. ![]() Next, the now-dry air goes through an evaporative cooling step, which lowers the temperature of the air (basically the same way sweat cools your skin). Here’s how Blue Frontier’s cooling system works: first, a stream of air passes through a channel and over a thin layer of desiccant, which pulls moisture out of the air. Rather than small silica beads, Blue Frontier’s cooling technology relies on a salt solution that’s so concentrated, it can pull moisture from the air. The key ingredient is different from the silica beads in shoe packaging, but the comparison is a common one-“We get that a lot,” says Matt Tilghman, the company’s co-founder and chief technology officer. Florida-based startup Blue Frontier, for example, is using liquid desiccants to build cooling systems. Adding the materials to vapor compression-based air conditioners could allow the company’s system to use 35% less energy than average models, according to Transaera CEO Sorin Grama.īut other companies are looking to use desiccants in cooling systems that would replace traditional air conditioners altogether. Tr a nsaera, an MIT spinout founded in 2018, is developing a hybrid system that uses a type of material called metal organic frameworks. Other types of desiccants could be added to existing designs for air conditioners, absorbing water from the air and cutting down on the energy required to keep rooms comfortable. The silica beads in those little packets that accompany new purses and shoes are a type of desiccant, designed to keep products dry as they’re shipped around the world. Hot takeĭesiccants are materials that suck up moisture. And a growing number of startups are looking to desiccants to accomplish just that. However, the plaque was actually a replica that a friend of his had made after seeing such a plague on the desk of a prison warden in Oklahoma.Systems that tackle dehumidification and cooling separately could keep building temperatures comfortable with less energy and allow for more flexibility in different environments. It was his way of saying that the ultimate responsibility lay with him, and he would not shirk his duty and responsibility and try to pass it to someone else. Pass the buck is the likely origin of the phrase “the buck stops here,” associated with President Harry Truman, who had a sign on his desk engraved with the message. The phrase passed into figurative use some time in the late 1800’s or early 1900’s. ![]() Mark Twain used the phrase in his semi-autobiographical work Roughing It, from 1872: “I reckon I can’t call that hand. He might even say, “I’m passing the buck.” Dealing could be a daunting responsibility when you were trying to keep a hidden ace up your sleeve. If a player didn’t want to deal, he would place the buck in front of the player next to him, thus passing the buck. ![]() When it was time for a new dealer, the buck was passed to the next player in line. Whatever the case, the marker was called a buck. In all probability, any small object was used. Since male deer have antlers and are called bucks, these knives were called ‘bucks.’ Other sources say a small piece of buckshot was used for the dealer’s marker. According to some sources, this object was often a knife with an antler handle, a common sort of knife to have in those days. A small object would be placed in front of the person whose turn it was to deal the cards. Pass the buck originated in poker games of the 19th century, particularly those in the saloons and riverboats of the old West. Then, when we do something well, he takes the credit.” Pass the buck is the probable origin of the phrase made famous by President Harry Truman, ‘The buck stops here.’ Origin He is incompetent and every time he screws up, he passes the buck on to one of us. Synonyms of pass the buck are cop out, dodge, palm off, and weasel out. Want to see more videos from Idioms.Online? Subscribe to our YouTube channel! ![]()
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