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A psychrometric chart is a graph of the thermodynamic parameters of moist air at a constant pressure, often equated to an elevation relative to sea level. The ASHRAE-style psychrometric chart, shown here, was pioneered by Willis Carrier in 1904. [10] It depicts these parameters and is thus a graphical equation of state. The parameters are:
The dry-bulb temperature (DBT) is the temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation. [1] The dry-bulb temperature is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It is directly proportional to the mean kinetic energy of the air ...
The psychrometric constant relates the partial pressure of water in air to the air temperature. This lets one interpolate actual vapor pressure from paired dry and wet thermometer bulb temperature readings.
FNIC offers a Dietary Reference Intakes (DRIs) (established Health and Medicine Division of the National Academies of Sciences, Engineering and Medicine) [49] calculator for daily nutrient recommendations, healthy recipes, educational materials, professional resources, food labeling information, and consumer food safety information, among other ...
A food thermometer (see below). A good one can keep you out of the hospital or urgent care, either of which will cost you more than the $10 to $20 one-time investment in a quality food thermometer ...
The Center for Food Safety and Applied Nutrition (CFSAN (/ ˈ s ɪ f ˌ s æ n / SIF-san)) is the branch of the United States Food and Drug Administration (FDA) that regulates food, dietary supplements, and cosmetics, as opposed to drugs, biologics, medical devices, and radiological products, which also fall under the purview of the FDA.
The wet-bulb temperature is the lowest temperature that may be achieved by evaporative cooling of a water-wetted, ventilated surface.. By contrast, the dew point is the temperature to which the ambient air must be cooled to reach 100% relative humidity assuming there is no further evaporation into the air; it is the temperature where condensation (dew) and clouds would form.
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