Recirculated air of 8 kg/sec with 53 KJ/kg enthalpy and outside air of 2 kg/sec with 90 KJ/kgenthalpy enters the conditioning unit. Determine the air conditioning capacity if supplyenthalpy to conditioned space is 42 KJ/kg.
Q: Answer the following problem with complete solutions. Write legibly Refrigerant HFC-134a is…
A:
Q: Describe the isentropic efficiency of a compressor is defined as the ratio of the work input…
A: An ideal compressor is considered as the one undergoing isentropic compression. However, in actual…
Q: 26 - Air entering an adiabatic gas turbine at a temperature of 570ºC has a pressure of 1416 kPa.…
A:
Q: Air compressed in a diesel engine from an initial pressure of 1 atm (14.7psia) and a temperature of…
A:
Q: Air at dry-bulb temperature of 75°F and wet-bulb temperature of 65°F is heated to 250°F and fed to a…
A: As per the question, conditions are plotted on the Psychometric chart, and determined the required…
Q: Question 2 a) Show that for air undergoing a steady flow compression process, the specific work of…
A:
Q: In Otto Cycle, air at 18°C is first compressed to one- eight of its original volume. If the heat…
A: Given data T1=18°C=291KV2=V18 r=V1V2
Q: Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa with a rate of 18…
A:
Q: 5.1) There is an adiabatic turbine to which water vapor enters at 6 MPa with a temperature of 500…
A: Pressure at turbine inlet, P1=6 MPaTemperature at turbine inlet, T1=500oCPressure at turbine outlet,…
Q: Explain using the concept of Ideal gas laws on how do you make a cold body, and how air conditioners…
A:
Q: ms-1 compressor with compression ratio (7:1). The pressure, temperature and volume at the beginning…
A: Givenr=V1V2=7 ie compression ratioP1=100kpaT1=300KV1=0.07m3V2=0.01m3η=60%and adaiabatic compression…
Q: Refrigerant R-134a at 200 kPa and 90 ⁰C enters an adiabatic diffuser steadily with a velocity of 600…
A: Fluid= R134aInlet condition of R134a, P1=200 kPa, T1=90oC, V1=600 m/sExit condition of R134a, P2=10…
Q: Determine the quantity of heat required to generate one kg of steam at a pressure of 7.8 bar from…
A: The heat exchanger is a device used to transfer heat from one fluid to another fluid. For heat…
Q: Show that the Kelvin–Planck and the Clausius expressions of the second law are equivalent.
A: Statements of second law of thermodynamics: 1.Kelvin Planck statement: It is impossible to develop a…
Q: |cen84959_chi8-ap01.qxd 8/11/06 1121 PH Page 928 928 Thermodynamics TABLE A-11
A: P-v diagram of refrigerant Note: For drawing the T-v diagram upper image is not clear.
Q: Air enters the evaporator section of a window air conditioner at 100 kPa and 27°C with a volume flow…
A: On using table A-12, the enthalpy of Refrigerant-134a at the inlet of evaporator section is written…
Q: Saturated ambient air with a DB of 8°C and a mass flow rate of 0.98 kg/s is divided into two…
A:
Q: Answer the following: 1- How does the human body respond to (a) hot weather, (b) cold weather, and…
A: 1) The human body responds to the cold and hot environment through a process called…
Q: Air enters a compressor of a jet engine at 0.65 atm and 275 K with a flow rate of 63.5 kg/s. The…
A:
Q: A completely reversible air conditioner provides 36,000 Btu/h of cooling for a space maintained at…
A: Given: The cooling capacity of the refrigerator, Qc = 36,000 Btu/h The temperature of the cold…
Q: Refrigerant-134a expands in an adiabatic turbine from 1.2 MPa and 100°C to 0.18 MPa and 50°C at a…
A: Given : m = 1.25 Kg/s P1 = 1.2 MPa to P2 = 0.18 MPa T1 = 100°C…
Q: An evaporator has entrance and exit enthalpy of 352.15 kJ/kg and 643.95 kJ/kg respectively. The…
A:
Q: Define the isentropic, polytropic, and isothermal compression processes between the same pressure…
A: The isentropic, polytropic and isothermal compression process between the same pressure limits can…
Q: In a centrifugal compressor air flows steadily at a rate of 2,1 kg/s and 81,00 m/s with a pressure…
A:
Q: Describe the isentropic process involves no irreversibilities and serves as the ideal process for…
A: In the study of thermodynamics, the word isentropic process is an idealized thermal process that is…
Q: Question 41 An adiabatic compressor admits 0.2 kg/s of ambient air at 101 kPa and 15°C. The air…
A: Given:m=0.2 kg/sP1=101 kPaT1=15°C =288 KT2=220°C =493 Kη=0.75
Q: A steam condenser receives 10 kg per second of steam with an enthalpy of 2570 KJ/kg. Steam condenses…
A:
Q: 300 kPa and 20 ºC water is heated in a mixing room with 300kPa pressure and 300 ºC steam. If the…
A:
Q: A vapor compression refrigeration cycle undergoes wet compression and maintains the temperature of…
A: Given dataRefrigeration cycle : Vapor compression refrigeration cycle with wet…
Q: Saturated liquid water enters an adiabatic steady-flow throttle valve at 500 kPa and leaves at 100…
A:
Q: The volumetric flow rate of the refrigerant R-134a entering a compressor at 140 kPa pressure and –…
A: The specific volume of the refrigerant at 140 kPa pressure and -10 degrees Celsius is
Q: For the special case of adiabatic mixing, show that the exit volume flow rate is the sum of the two…
A: Let us consider a two inlet stream and one outlet stream The enthalpy at the inlet section (1) is h1…
Q: how the efficiency of a compressor can be calculated??
A: Compressor Efficiency can be calculated as; Gas compression cab be expressed in terms of pressure…
Q: Air at a rate of 50 m3/min enters an adiabatic compressor at a pressure of 100 kPa and a temperature…
A:
Q: Determine the temperature change undergone by an air as an ideal gas when expanding in the turbine…
A:
Q: Q19: An air conditioning plant is required to supply 60m/min. of air at dry bulb temperature of 21°…
A: Volumetric flow rate of supply air, Vs˙=60 m3/min=6060m3/s=1m3/s Supply air conditions, =21oC db and…
Q: Is aircon-ditioner an example of thermodynamic system inside the house? Is it an open system, closed…
A:
Q: A refrigeration system is to cool bread loaves with an average mass of 350 g from 30 to –10°C at a…
A: Solution The rate of heat removal from the breads Q=Qbr+Qfr
Q: Air enters a multistage compressor of a jet engine at 0.65 atm and 275 K with a flow rate of 63.5…
A:
Q: (a) Air enters an adiabatic compressor at 100 kPa and 17°C at a rate of 2.4 m³/s, and it exits at…
A: Given data :- P1 =100kpa T1=17°C T2=270°C Flow rate =2.4 m^3/sec
Q: • To increase the natural circulation in boiler, it requires: a. Shorter boiler, higher operating…
A:
Q: The ratio of volume at the end of expansion to the volume at beginning of expansion is 12. Determine…
A: Given Data: The ratio of volume at the end of expansion to the volume at start of expansion is 12
Q: THERMODYNAMICS A 1.5-kW power output is produced by a small, high-speed turbine that runs on…
A: Given: The power output, p = 1.5 kW The entrance pressure, P1 = 400 kPa The entrance temperature, T1…
Q: Show that the air standard efficiency of a gas turbine can be expressed in terms of pressure ratio…
A: It is required to determine efficiency of Gas turbine cycle in terms of pressure ratio
Q: Q2. Determine the temperature change undergone by an air as an ideal gas when expanding in the…
A:
Q: Air enters the evaporator section of a window air conditioner at 100 kPa and 27°C with a volume flow…
A: Given data:
Q: 6. In a steady flow device, the mass flow rate of the fluid remains constant. T F 7. The volume flow…
A: 6. In a steady flow device, the mass flow rate of the fluid remains constant. 7. The volume flow…
Q: To increase the natural circulation in boiler, it requires: a. Shorter boiler, higher operating…
A: Taller boiler produces better pressure difference and bigger flow rates. Higher operating pressure…
Solve it correctly please. I will rate accordingly
Step by step
Solved in 2 steps with 2 images
- moist air supplied to an air conditioned room is 600 m3 /min. The External conditions are 34.4°C DBT and 60% RH. The required conditions are 21°C DBT and 70% RH. find out 1- sensible heat and latent heat removed from the air per minute. 2- sensible heat factor for the system.The following data refer to summer air conditioning of a building: Outside design conditions 43 °C DBT, 27 °C WBT Inside design condition 25 °C DBT, 50% RH Room sensible heat gain 84000 kJ/h Room latent heat gain 21000 kJ/h BPF of cooling coil 0.2 The return air from the room is mixed with the outside air before entry to cooling coil in the ratio of 4:1 by mass. Determine: (a) Apparatus dew point of the cooling coil (b) Entry and exit conditions of air for cooling coil (c) Fresh air mass flow rate and (d) Refrigeration load on the cooling coil.In the evaporator of an air conditioning system, air flows over finned tubes through with the refrigerant R134a flows. air out refrigerant in refrigerant out air in The mass flow rate of the air is 0.75 kg/s and the air enters at 40°C and pressure 1.04 bar. The air leaves the evaporator at 25°C and 1.01 bar. The refrigerant enters the evaporator with a quality of 0.2 and a temperature of 12°C. The refrigerant exits as saturated vapor. Obtain the properties of air and R134a using the fluids "Air" and "R134a" in EES. What is the volumetric flow rate of the air entering the heat exchanger (m^3/s)? Determine the rate of heat transfer from the air to the refrigerant (W). Determine the mass flow rate of the refrigerant (kg/s).
- I. In an air conditioning unit, 3.5 m³/s of air at 27°C dry bulb temperature 50%RH at 100.325 kPa barometric condition enters the Airconditioned Unit (ACU). The leaving condition of the air is 13°C dry bulb and 90% RH. Determine: a. Sensible Heat that was being removed/ added from the ACU? b. Moisture that is being removed/added from the air leaving ACU?1. What is the specific enthalpy at the outlet of the turbine and compressor in KJ/Kg 2.what is the power output per unit mass flow rate of air of the turbine . 3.what is the rate of heat input per unit mass flow rate of the air during the heat addition processMoist air enters an air-conditioning system as shown in the figure below at T1 = 28°C, 01 = 80% and a volumetric flow rate of (AV)1 = 0.47 m3/s. At the exit of the dehumidifying section, the air is saturated, @, = 100%, and the condensate leaves this section at the same temperature as the moist air. At the exit of the heating section the moist air is at T3 = 24°C, 03 = 50%. The system operates at steady state, the pressure is 1 bar at all locations, and kinetic and potential energy effects are negligible. Dehumidifying Section Heating Section 2 = 100% T3 = 24°C Ø3 = 50% T1= 28°C $1. (AV)ı Initial dew point- O = 100% Condensate - saturated at T2 T2 T3 ww
- 1:17 PM Question 12) The atmospheric air at dry bulb temperature of 15°c enters a heating coil maintained at 40°c. The air leaves the heating coil at 25°c. The bypass factor of heating coil is Options: 0.37 09'0 0.42 0.67 1:18 PMA can of refrigerant 134a (R-134a) for car air conditioners contains 14 ounces.A case of 24 cans has a total of how many ounces of R-134a?Question 2: An air-standard set of processes with constant specific heats is executed in a closed system and is composed of the following: 1-2 Isentropic compression from 100 kPa and 25ºC to 600 kPa 2-3 Isometric heat addition to 1500 K 3-4 Isentropic expansion to 100 kPa 4-1 Isobaric heat rejection to initial state Question: Following the given data, perform the following: a. Plot the P-V and T-S Diagram of the cycle b. Calculate the net work output of the cycle (kJ/kg) c. Calculate the Thermal Efficiency (%) 1pt 1pt 1pt
- A barometric condenser serves a steam turbine which is exhausting 2720 kg ofsteam per hour at a pressure of 0.007MPa and having a quality of 90%.a. Determine the gpm of 15.56°C cooling water needed.b. Determine the temperature of cooling water needed.A manufacturer conducted an experiment for an evaporator capacity 548.8 kW cooling. Enthalphies of the refirgerant and solution are found to be: -144 solution leaving the Absorber -535.27 solution leaving the Generator 3256.50 refrigerant generated 167.93 refrigerant leaving the Condenser 2549.76 refrigerant absorbed determine: Mass flow of the refrigerant in kg/s Answer in four decimal places.An air-standard set of processes with constant specific heats is executed in a closed system and is composed of the following: 1-2 Isentropic compression from 100 kPa and 25ºC to 600 kPa 2-3 Isometric heat addition to 1500K 3-4 Isentropic expansion to 100 kPa 4-1 Isobaric heat rejection to initial state Question: Following the given data, perform the following: a. Plot the P-V and T-S Diagram of the cycle b. Calculate the net work output of the cycle (kJ/kg) Calculate the Thermal Efficiency (%)