Figure shows a cooling tower operating at steady state. Warm water from an air-conditioning unit enters at 49 °C with a mass flow rate of 0.5 kg/s. Dry air enters the tower at 21° C, 1 atm with a volumetric flow rate of 1.41 m/s. Because of evaporation within the tower, humid air exits at the top of the towver with a mass flow rate of 1.64 kg/s. Cooled liquid water is collected at the bottom of the tower for return to the air-conditioning unit together with makeup water. Determine the mass flow rate of the makeup water, in kg/s. Humid air m = 1.64 kg/s %3D Cooling tower 4. Fan Warm water inlet Air conditioning unit m = 0.5 kg/s %3D T= 49°C %3D Spray heads Dry air T = 21°C P3 I bar (AV), = 1.41 m/s %3D %3D Pump 2 Return water Liquid 72= 27°C m2 = m 5| Makeup water %3D

Figure shows a cooling tower operating at steady state. Warm water from an air-conditioning unit enters at 49 °C with a mass flow rate of 0.5 kg/s. Dry air enters the tower at 21° C, 1 atm with a volumetric flow rate of 1.41 m/s. Because of evaporation within the tower, humid air exits at the top of the towver with a mass flow rate of 1.64 kg/s. Cooled liquid water is collected at the bottom of the tower for return to the air-conditioning unit together with makeup water. Determine the mass flow rate of the makeup water, in kg/s. Humid air m = 1.64 kg/s %3D Cooling tower 4. Fan Warm water inlet Air conditioning unit m = 0.5 kg/s %3D T= 49°C %3D Spray heads Dry air T = 21°C P3 I bar (AV), = 1.41 m/s %3D %3D Pump 2 Return water Liquid 72= 27°C m2 = m 5| Makeup water %3D

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Use the following Data for Nitrogen gas: R= 0.2968 kJ/kg.K, C,=1.0418 kJ/kg.K, C,=0.745 kJ/kg.K, Required: Draw consistent, clear and standard schematic for the problem representing the inlet and outlet conditions and label your schematic with the given operating conditions. Analyze the problem systematically using step-by-step CV energy and mass analyses, state your assumptions (wherever applicable), and determine the following (circle your final answers): (a) The specific volume and density at the inlet and exit of the compressor; (b) The difference in the specific enthalpy between the exit and inlet of the compressor assuming a constant specific heat Cp; (c) The specific heat loss from the compressor;
Q3 : 3 4500 m³ / hr of air at 45 ° C DBT and 10 % RH enters an evaporative air cooler . The air leaves the air cooler at 80 % RH . Find , ( 1 ) Minimum water temperature at the basin of the air cooler . ( 2 ) The moisture rate added to the air . ( 3 ) The sensible and latent heat exchange . ( 4 ) The effectiveness of the air cooler .
1. A 5,000 kg/min of water at 35°C enters a cooling tower where it is to be cooled to 20 °C. The energy is to be exchanged with atmospheric air entering the unit at 16°C and leaving the unit at 32°C. The air enters at 35% RH and leaves at 80% RH: If all process are assumed to occur at atmospheric pressure, determine the percentage of total water flow that is makeup water. 2. A 45 GPM of water enters a cooling tower at 50°C. Atmospheric air at 14°C and 50% RH enters the tower at 3.5 m and leaves at 25°C saturated. Determine the volume of water that leaves the tower.
8. There are 2.30 kg/min. of steam undergoing an isothermal process from 25.5 bar, 317 C to 6.3 bar. Determine (a) AS (b) W for nonflow, and (d) W for steady flow with P = 0, K =42kJ/min. (1 bar = 100 kPa) %3D
ASEM 12/6/2015 Q1/ A stream of warm water is produced in a steady flow mixing process by combining 1.0 kg/s of cool water at 25 °C with 0.8 kg/s of hot water at 75 °C. During mixing, heat is lost to the surroundings at the rate of 30 kJ/s. What is the temperature of the warm water stream? Assume the specific heat of water constant at 4.18 kJ/kg.K.
السؤال الثالث The thermodynamic properties of refrigerant R22 mixture of liquid and vapor leaving the expansion device and entering the evaporator are: pressure of 498 KPa, temperature of 0 °C, fraction dryness (x) of 0.238, saturated liquid enthalpy of 200 kJ/kg, and saturated vapour enthalpy of 405 kJ/kg. The pressure of this refrigerant at the entrance of the condenser is measured to be 19.3 bar After the subcooling process, the enthalpy in (kJ/kg) and the pressure in (MPa) of this refrigerant have been measured and were found to be 199 47 kJ/kg and 2.3 MPa. 239. 68 kJ/kg and 1.96 MPAO 248.79 kU/kg and 1.93 MPa 110 52 kJ/kg and 3.1 MPa 1:29 PM 91°F Sunny 5/14/2022
9. thermodynamics
Air at 1 bar, 27 °C, with a volumetric flow rate of 40 m³/min enters the non-mixing counterflow heat exchanger part of an air-conditioning system. This air exits the heat exchanger at 0.95 bar and 17 °C. The cooling of this air is done by a stream of refrigerant R-134a that enters the heat exchanger at 5 bar with a quality of 0.3 and exits at 5 bar and 20 °C. Determine the overall rate of entropy production during this process, in kW. The overall heat exchanger is insulated. The operation is steady state, and the effects of potential and kinetic energy are negligible.
Which is the correct answer