10. A winter air conditioning system maintains a building at 210C and 40% RH. The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load on the building is 100 kW, while the latent heating load is 25 kW. In the air conditioning system, 50% of the outdoor air (by mass) is mixed with 50% of the room air. The mixed air is heated in a pre-heater to 250C and then required amount of dry saturated steam at 1 atm. pressure is added to the pre-heated air in a humidifier. The humidified air is then heated to supply temperature of 450C and is then supplied to the room. Find a) The required mass flow rate of supply air, b) Required amount of steam to be added, and c) Required heat input in pre-heater and re-heater. Barometric pressure 1atm..

10. A winter air conditioning system maintains a building at 210C and 40% RH. The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load on the building is 100 kW, while the latent heating load is 25 kW. In the air conditioning system, 50% of the outdoor air (by mass) is mixed with 50% of the room air. The mixed air is heated in a pre-heater to 250C and then required amount of dry saturated steam at 1 atm. pressure is added to the pre-heated air in a humidifier. The humidified air is then heated to supply temperature of 450C and is then supplied to the room. Find a) The required mass flow rate of supply air, b) Required amount of steam to be added, and c) Required heat input in pre-heater and re-heater. Barometric pressure 1atm..

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

need fast please
The property data for a steady state vapor-compression refrigeration cycle with refrigerant 134a as the working fluid are given in the table below. The refrigeration capacity of the cycle is 9.4 tons and the refrigerant mass flow rate is 12.4 kg/min. Determine the net changes in flow exergy rate of the refrigerant passing through the evaporator A (Ed) evap and condenser A(Ed) cond, both in kW. Let po = 1 bar, To = 24°C. (a) A (Ed) evap = Ex: 7.77 kW (b) A (Ed) cond = Ex: 0.999 kW T3, P3 = P2 == Qout 3 2 State p (bar) T (°C) h (kJ/kg) s (kJ/kg. K) www P2 1 1.4 -10.0 243.4 0.9606 2 7.0 64.0 300.8 1.0303 3 7.0 24.0 82.90 0.3113 4 1.4 -18.8 82.90 0.3301 4 == Expansion valve P4 Pl Evaporator ww Condenser Compressor W T₁, Pi m
A thermoelectric device cools a small refrigerator and discards heat to the surroundings at 25°C. The maximum electric power for which the device is designed is 100 W. The heat load of the refrigerator( that is, the heat leaking through the walls that must be removed by the thermoelectric device) is 500 W. What is the minimum temperature that can be maintained in the refrigerator?A.10.6 °CB. -15.6 °CC. 0°CD. -24.7 °C
Heat transferred from the higher and lower temperature reservoirs are and , respectively. Select the coefficient of performance for a refrigerator___________ A. 0.67 B. 1.5 C. 2.0 D. 0.5
7
Stepwise Solution please. A Carnot refrigeration cycle is executed in a closed system in the saturated liquid-vapor mixture region using 1 kg of refrigerant-134a as the working fluid. The maximum and the minimum temperatures in the cycle are 22C and -4C, respectively. If the refrigerant is saturated liquid at the end of the heat rejection process, and the net work input to the cycle is 16 kJ, determine: b) The pressure at the end of the heat rejection process.
Thermodynamics: A refrigeration unit using Refrigerant-134a is used to maintain a certain space at –15°C. The condenser rejects heat (?H) to cooling water that enters the condenser at 15°C at a rate of 0.2 kg/s and leaves at 35°C (all as saturated liquid water). The superheated refrigerant enters the condenser at 0.8 MPa and 40°C and leaves as a saturated liquid at the same temperature. If the compressor consumes 4.5 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load (?̇L), (c) the COP.
b) Air at 25°C and 1(atm) is cooled at the rate of 3000 m³/hr to -8°C by refrigeration. For a surroundings temperature of 25°C, what is the minimum power requirement ?
What are the Difference of a Open Heater to a Closed heat exchanger?
What are the four processes that make up the simple ideal vapor compression refrigeration (VCR) cycle? Make sure you mention what is physically happening during each process Themodynamics question. please explain briefly.Thank you
The following image describe a single-flash geothermal power plant. We have the follow informations about the system: The flash chamber (throttling valve) is a isenthalpic device The system is adiabatic The power generated by the turbine is 10kW The pressure and temperature at point 4 are 50 kPa and 100°C respectively The pressure at separator is 500 kPa The separator has the function of separating the phases of a saturated mixture The mass that exits the system through the separator is 5 times the mass that exits the turbine. The pressure at point 1 is 1 MPa If all the information is sufficient, fill in the table below and plot all the points on a T x v graph.
Comment on the importnace of quickly returning the milk carton to the refrigerator for an energy conservation point of view.