Ambient dry-bulb temperature

Ambient Dry-Bulb Temperature External outdoor temperature as indicated by a dry-bulb thermometer and expressed in degrees Fahrenheit. 

Ambient dry bulb temperature for air-cooled condensers Available water temperature for water-cooled condensers Ambient wet bulb temperature for evaporative types... 

The use of dry coolers cannot take advantage of the lower cooling temperatures available by the evaporation of the cooling water, and is limited by the ambient dry bulb temperature, rather than the wet bulb Higher power is therefore required, and a given size compressor will perform less cooling duty. 

AT (Temperature of air leaving packing — ambient dry-bulb temperature) K e... 

Calculated from L,a,b values on a Hunter color difference meter (average of six readings on each sample) exposure in Weatherometer is listed in kilojoules per square meter (ambient dry bulb temperature, 85°F 3° wet bulb temperature, 70°F 4°, black panel temperature 100°F % relative humidity, 50 8%). Each 110 kJ/m2 corresponds to about 20 h exposure to noon sunlight conditions. 

At low cirabient temperatures a greater portion of the metabolic heat production (depending upon exercise intensity and clothing) is dissipated by convection and radiation and a minor portion by evaporation of sweat and respiratory water. As ambient temperature rises, the portion of heat dissipated by convection and radiation decreases progressively in concert with a proportional increase in the rate of sweating and evaporative heat loss. The coordination of the rate of heat loss between conduction, radiation, and evaporation is so precise that, for ambient dry-bulb temperatures between 5 C and 29 C, the equilibrium level of core (rectal) temperature is related directly to the intensity of the exercise load and is independent of environmental temperature (25). 

The use of water is discontinued after ambient dry-bulb temperatures fall below the switch point temperature, since the entire process load can be cooled using only cold fresh ambient air. By using this three-step load-shifting practice, total wet-dry cooling water consumption is about 25 percent of that consumption total experienced with an equivalent CT application. 

In this paper. The simulation has been performed in Thermoflex Software for thermodynamic simulation and analysis of Dehshir and Kashan pipeline gas station with different inlet air cooling systems. The elfeet of cooling technology on the net power capacity enhancement for the Dehshir gas stations is shown in Fig. 2. It shows the effect of cooling when the air is cooled from its ambient dry bulb temperature to 5 C by Chillers and to the Lowest Possible Temperatures with Evaporative Cooling (85% Approach) and Fogging (98% Approach). 

The article temperature must be known in order to calculate its degradation rate. Solar modules generally are nearly black, so they get hot in the sun. We were interested in applications in which the module might be attached directly to a roof, so the back can be considered to be well insulated. Several temperature models have been described in the literature at various levels of complexity [7-12]. These models generally require empirical constants that we did not have. Instead, we adapted a simple equation that was derived from a dataset of the surface temperature of a black polycarbonate roof panel attached to a closed minivan in Arizona over the course of a year [13]. This is shown as Eq. (3.1) where T od is the module surface temperature, is the ambient dry bulb temperature, and / is the global horizontal irradiance in W/m. As it turns out, the selection of the model is not critical in the case of hydrolysis reactions, as will be shown in the Sensitivity section. 

Fig. 3.4 Ambient dry bulb temperature, irradiance, and calculated (Eq. 3.1) solar module temperatures from Miami TMY3 dataset for July 4,1990...

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