Search results
Results from the WOW.Com Content Network
Critical exposure temperature (CET) is the lowest anticipated temperature to which the vessel will be subjected, taking into consideration lowest operating temperature, operational upsets, autorefrigeration, atmospheric temperature, and any other sources of cooling.
An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating ...
For mild carbon steels (ASTM A36) temperatures, the design yield stress ratio at 300 °F is 84% of room temperature stress. At 500 °F, the design yield stress ratio is 77% of room temperature stress. At 700 °F, the design yield stress ratio is about 71% of room temperature stress. Temperatures above 800 °F may cause mild carbon steel to warp.
Operative temperature is used in heat transfer and thermal comfort analysis in transportation and buildings. [10] Most psychrometric charts used in HVAC design only show the dry bulb temperature on the x-axis(abscissa), however, it is the operative temperature which is specified on the x-axis of the psychrometric chart illustrated in ANSI/ASHRAE Standard 55 – Thermal Environmental Conditions ...
Consider two cooling systems that are otherwise similar, operating at an ambient air temperature of 20 °C. An all-liquid design might operate between 30 °C and 90 °C, offering 60 °C of temperature difference to carry away heat. An evaporative cooling system might operate between 80 °C and 110 °C.
Operative temperature or PMV should be calculated at 0.6 m for seated occupants, 1.1 m for standing occupants, and the mean height of the body for horizontal occupants. [10] Local discomfort caused by floor temperature and radiant temperature asymmetry should be measured at the floor surface and at the occupants’ locations, respectively. [12]
The "Operating empty weight" (OEW) is the sum of the empty weight and the crew plus their baggage. Standard items include all structural modification or configuration orders that may have altered the MEW, including all fluids necessary for operation such as engine oil , engine coolant , water , hydraulic fluid and unusable fuel .
Operating weight is a measure of the total weight of a vehicle or machine when it is in use, including all necessary components such as the driver or operator, fuel, and any additional equipment or tools required for its operation.