The effective surface temperature of the coil is 5°C. The surface area of the coil is such as would give 4.6 TR with the given entering air state of 40 m3/min of a mixture of re- circulated room air and outdoor air enters cooling coil at 27°C dry bulb temperature and 15°C wet bulb temperature.. Determine the conditions of the air leaving the coil and the by-pass factor.
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- A winter air-conditioning system adds for humidification 0.0025kg/s of saturated steam at 101 kPa pressure to an airflow of 0.36 kg/s.The air is initially at a temperature of 6.2019123751 C DB with a relativehumidity of 20 percent. What are the dry-bulb and wet-bulb temperaturesof the air leaving the humidifier?Kindly graph it on the given imageA winter air-conditioning system adds for humidification 0.0025kg/s of saturated steam at 101 kPa pressure to an airflow of 0.36 kg/s.The air is initially at a temperature of 7 C DB with a relativehumidity of 20 percent. What are the dry-bulb and wet-bulb temperaturesof the air leaving the humidifier?The effective surface temperature of the coil is 5°C. The surface area of the coil is such as would give 4.6 TR with the given entering air state of 40 m3/min of a mixture of recirculated room air and outdoor air enters cooling coil at 27°C dry bulb temperature and 15°C wet bulb temperature.. Determine the conditions of the air leaving the coil and the by-pass factor.
- Drow and explainthe use of vr data for calculating the final temperature during an isentropic processThe sensible and latent heat losses from a space are 22 kW and 9.5 kW respectively. The space is maintained at 21°C db-temperature and 7°C dew-point temperature. Conditioned air is supplied to the space at 35°C db-temperature. The pressure is constant at 101.3 kPa. Determine:the wb-temperature of the supply air in °Cthe mass flow rate of air in kg/sWinter air is heated & humidified thru steam heated coil and humidified using water sprayer. Air is flowing at a rate of 750 cubic meter per minute. Winter air is initially at 10 C dry bulb and 90 % RH. The final condition of air after the process is 30 C dry bulb & 60 % RH. Consider normal atmospheric pressure. Determine: rate of saturated steam injected in the sprayer per second with steam temperature of 30 C (INCLUDE THE PYCHROMETRIC CHART PLS)
- The air has a dry ball temperature of 40 ℃ and a wet bulb temperature of 26 ℃ initially heated in the heater so that the dry ball temperature increases to 90 ℃. then the air is passed through the pile of corn kernels to dry. Then this air is passed to the dehumidifier to reduce the RH to 10 ℃. Draw the course of the air change process on a psychometric diagram. The airflow rate through the corn kernels pile and dehumidifier was 6.0 m / s and the pile cross-sectional diameter was 0.5 m a. Determine the amount of water lost from the pile of corn kernels (in grams of water / second) = b. Determine the amount of water lost from the air when passing through the dehumidifier (in grams of water / second) =A boiler generates 6 000 kg wet steam per hour at 900 kPa, with a dryness fraction of 0.90 from supply water at 43.8˚C. While using 700 kg coal with a calorific value of 35 MJ/kg. Calculate: 1. The thermal efficiency of the boiler. 2. The equivalent evaporation from and at 100˚C.A humidifier in an air heating duct handles 3000 CFM, and increases the moisture content of the air from 30 to 60 g/lb a.s. Calculate the amount of heat needed for the humidifier, if the air is at 80°F.
- the question below is already answered in the photos that I provided I only want to ask how did it find the answersSaturated steam at a pressure of 25 psia is sprayed into a stream of moist air. The initial condition of the air is 55 dry-bulb temperature and 35 F de-point temperature. The mass rate of air flow is 2000 lb per min. Barometric pressure is 14.696 psia. Determine how much steam must be added in lb per min to produce a saturated air condition, b) the resulting temperature of the saturated air.my question here is:regarding of the solution pls elaborate how did it get w1 and h1 is it given in the psychrometric chart or it has a specific solution to followQ3 a) A rectangular duct with width of 0.3 m and height of 0.2 m is used to deliver cold fresh air to a medium size master bedroom. Heat from roof causes the internal surface temperature of the duct to be 40°C. The fresh cold air enters the duct at 17°C and exits at 23°C. Given the volumetric flow rate of the fresh cold air which enters the duct is 0.15 m/s, assuming the flow inside the duct is fully developed: i) State two assumptions for analyzing this problem ii) Calculate the Reynolds number for the flow inside the duct iii) Calculate the heat transfer rate to the fresh cold air inside the duct, kW iv) What is the minimum length of the duct to keep the exit temperature at 23°C, m b) Will the exit temperature remain the same which is at 23°C, if the length of the duct is increased 5 times of the length calculated in iv)? Explain and sketch a temperature variation along the length of the duct to justify your answer.An auditorium to be air-conditioned for the following conditions, Outdoor dry-bulb temperature 40 °C Outdoor wet-bulb temperature 20°C Expected comfort condition 20 DBT 60%RH Seating capacity of the auditorium 1500 persons Air supplied from outdoor 0.3 m¥min per person fthe required condition is achieved first by adiabatic humidification and then by cooling, determine () the capacity of the cooling coil in tonnes and (i) the capacity of humidifier in kg/h.