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Building Technologies & Solutions is the company's longest-running business unit, dating to 1885 when Johnson founded the Johnson Electric Service Company [29] after patenting the electric thermostat in 1883. [30] As of 2012, the business unit operated from 700 branch offices in more than 150 countries. [25]
Thermo King refrigeration unit on a DAF refrigerated truck In 1942, Jones developed the first portable refrigeration units for troops stationed overseas in World War II . Thermo King also introduced the first gasoline-powered mechanical refrigerated boxcars in the 1940s, which reduced shipping costs, making fresh produce more widely available ...
Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]
Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.
Propane refrigeration is a type of compression refrigeration. Propane (R290) has been used successfully in industrial refrigeration for many years, and is emerging as an increasingly viable alternative for homes and businesses. Propane's operating pressures and temperatures are well suited for use in air conditioning equipment, but because of ...
Move over, Wordle, Connections and Mini Crossword—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity ...
Hints for Today's Connections Sports Edition Categories on February 14, 2025. Here are some hints about the four categories to help you figure out the word groupings.
The Prestcold packaway refrigerator, winner of the 1959 Duke of Edinburgh's design award. The Pressed Steel Co. Ltd was a joint venture formed in 1926 between William Morris of Morris Motors, the American Budd Company and J. Henry Schröder & Co. bank.