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The air temperature had fallen to near freezing, and the ocean was completely calm. Colonel Archibald Gracie, one of the survivors of the disaster, later wrote that "the sea was like glass, so smooth that the stars were clearly reflected." [30] It is now known that such exceptionally calm water is a sign of nearby pack ice. [31]
Hot water reset. Hot water reset, also called outdoor reset ( ODR ), is an energy-saving automatic control algorithm for heating boilers that are typically fired with fuel oil or natural gas. A hot water reset control loop measures the outside air temperature; this information is used to estimate demand or heating load as the outdoor ...
A tempering valve mixes enough cold water with the hot water from the heater to keep the outgoing water temperature fixed at a more moderate temperature, often set to 50 °C (122 °F). Without a tempering valve, reduction of the water heater's setpoint temperature is the most direct way to reduce scalding.
Between 1971 and 2000, average summer temperatures rose by 1.7 degrees Fahrenheit in the U.S., and by 2.7 degrees across much of the West. Those unwelcome facts have left many residents scrambling ...
A wildfire in Salt Lake City forced people living uphill from Utah's state capitol to evacuate, and it remained uncontained Sunday as more than 100 firefighters worked to protect nearby homes.
A water temperature of 10 °C (50 °F) can lead to death in as little as one hour, and water temperatures near freezing can cause death in as little as 15 minutes. [37] During the sinking of the Titanic, most people who entered the −2 °C (28 °F) water died in 15–30 minutes. [38]
Fire play is a form of temperature play that involves using flame on or very close to the skin. The flame is typically on or applied with a fire wand (essentially a small torch), and frequently utilizes 70% isopropyl alcohol as fuel. Other common fire play toys include flaming gloves and flaming floggers; other common varieties of fuel include ...
A thermostatic mixing valve (TMV) is a valve that blends hot water with cold water to ensure constant, safe shower and bath outlet temperatures to prevent scalding . The storage of water at high temperature removes one possible breeding ground for Legionella; the use of a thermostat, rather than a static mixing valve, provides increased safety ...