At 6 p.m. the temperature at the airport is 20 degree C and the humidity is...
The humidity in a room at the temperature of 20°C is 40%. At the same time the humidity outside at the temperature of 0°C is 80%. In which direction do the water vapour molecules move - in the room or outside when the window is opened? Needed Information: 0°C = 0,61 Water vapor KPa 20°C = 2,34 Water vapor KPa I already solved the exercise, but I am afraid I haven't solved it correctly.....the teacher tends to get extremely irritated...
We are learning about relative humidity. 1st part- what is the water vapor content at 25 degree C air if its relative humidity is 50%? 50=10/20 x 100% gives me the water vapor content of 10g/kg. 2nd part- If the air was at 25 degree C at sea level, and rises to 1,000 meters, then what will its temperature be? It will drop by 10 degree C, so the temperature will be 15 degrees C. At 15 degree's C the...
Define (a) relative humidity and (b) temperature . Use your OWN
words and (briefly) explain the physical processes involved.
1c) Explain the relationship between temperature and relative
humidity as shown in the data sets
1d) Define dew point . Would you expect to observe any dew
formation at any time on 21 June 2018 at either site? Explain
why/why not.
Plot for DRA 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...
A patients temperature was 97.7 F at 6:10 A.M. and 98.9 at 1:10 P.M. If the temperature change with respect to elapsed time was linear throughout the day, what would the patient's temperature be at 7:10 P.M.?
Please show the proper steps for each question , required to
learn this for the test.
1. [20 pts] Changes in airport procedures require considerable planning. Arrival rates of aircraft are important factors that must be taken into account. Suppose small aircrafts arrive at a certain airport at a rate of 6 aircrafts per hour, according to a Poisson process. a. What is the probability that 5 aircrafts arrive at the airport in 1 hour? b. Find the expected number...
Air that is at its dew point of 5 degree C is drawn into a house where the temperature is 20 degree C. What is the relative humidity at this temperature? Assume a constant pressure of 1 atm.
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water evaporates from the surface of a lake at a rate of 0.20 kg/h per square metre of water surface area. The temperature of water is 25°C. (a) Determine the mass transfer coefficient. (10 marks) (b) Determine the convective heat transfer coefficient. (10 marks) (c) Determine the net heat loss (in W/m2) from the lake. (5 marks) The specific volume of water vapour at 25°C...
a) Define, in words the following 0 the humidity ratio in relative humidity (6 marks) ) dew point temperature b) Explain the principle of operation of a whirling hygrometer (sing psychrometer) (4 marks) ) Various psychrometric processes (0-1, 0-3,0-4,0-5) are shown in the figure below. Match the processes to the following: Cooling with dehumidification Sensible heating Humidification with steam injection Humidification with water injection (4 marks) d) On a particular day the weather forecast states that the dry bulb temperature...
265 A person is found dead at 5 p.m. in a room where temperature is 20°C. The (1 temperature of the body is measured to be 25°C when found, and the heat transfer coefficient is estimated to be 8 W/m2.K. Modelling the human body a 30 cm diameter, 1.70 m long cylinder.calculate actual time in hours) of death of the person. Take thermophysical properties of the body :k = 6.08 * W/m.K, p = 900 kg/m3,C = 4000 J/kg.K إجابت...
Suppose you want to operate an ideal refrigerator with a cold temperature of -20 degree C, and you would like it to have a coefficient of performance of 6.50. What is the hot reservoir temperature for such a refrigerator? degree C