the barometer shows a value of 740 mm Hg; dry bulb temperature 35 ° C; wet bulb temperature is 25 ° C. Specify: a. Relative humidity b. Absolute humidity c. Dew point temperature

A manufacturer advertises that a particular set of safety goggles has a optical density of at least 1.8. If the incident ultraviolet radiation for a particular process is 230 mW/cm2; how much energy in mW/cm2 will reach the eye if these glasses are worn?

11-18 Carrier's equation expresses actual water-vapor partial pressure in terms of wet-bulb and dry-bulb temperatures: Pu=P- where (p-Pop-Two) 2200-TWR p. = actual partial pressure. lb/in² abs Pawsaturation pressure corresponding to werbult temperature, 1b/in² abs p=total interesse, /iu' als Tosdry bulb temperature. F Two-wa-bulb temperature, F Air at 1 atm and 100-F flows across a wet-bulb thermometer, producing a temperature of 70-F. Calculate the relative humidity of the airstream using Carrier's equation and compare with results obtained by methods of this chapter.

On a day when wind is blowing over a lake (T(water) =20°C) at 5 m/s, which side of the air-water interface will be rate-limiting on the flux of Ethyl benzene (i.e. va or vw)?

-67 Verify the temperature distribution for case 2 in Section 2-9, i.e., that T – T cosh m(L – x) +(h/mk) sinh m(L – x) То — То cosh mL+ (h/mk) sinh m L Subsequently show that the heat transfer is sinh mL+ (h/mk) cosh m L cosh mL+ (h/mk) sinh mL q=/h PkA (To – T∞) that of the surrounding fluid. CASE 2 The fin is of finite length and loses heat by convection from its end. If we let m-h P/kA, the general solution for Equation (2-306) may be written 6=Cje +C 12-31] For case I the boundary conditions are e = at x=0 at x00 CHAPTER 2 Steady-Sute Conduction One Dimension and the solution becomes e T-Tx 12-32] To -T For case 3 the boundary conditions are e = at x0 de -0 at x=L dx Thus C +C2 0mm(-Cjemt +Czey Solving for the constants C, and C2, we obtain + 12-33a] cosh [m(L-x)1 12-336| cosh ml. The hyperbolic functions are defined as e +e 2 sinh x cosh x sinh x - - cosh x tanh x= e te The solution for case 2 is more involved alecbraically and the result is T-T _cosh m (L -x) + (h/mk) sinh m (L…

The results of air temperature measurement obtained a dry bulb temperature of 29 ° C and a wet bulb temperature of 26.5 ° C. Using a psychometric chart, determine the properties of the air as follows:a. Humidityb. Water contentc. Specific volumed. Enthalpye. Condensation temperatureIf the air is in the space of 162 m3, determine:f. Air weight (dry air and moisture)g. The amount of water content in the room