An air conditioning unit delivers 8.24 m3/s of air at 15.2°C DB and 85% RH to maintain 26.5°C DB and 50% RH room conditioned. The air conditioning unitextracts 65% by weight of room air. The balance being made up by outside at 34.7°C DB and 60% RH. Determine the following:a. mass flow rate of supply air in kg/sanswer which must be rounded off to two decimal places only. In betweenyour solution, use all the decimal values that you will be calculatedb. sensible heat load in kW at the conditioned roomc. latent heat load in kW at the conditioned roomd. total heat load in kW at the conditioned roome. refrigeration load in kW

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Answered: An air conditioning unit delivers 8.24…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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An air conditioning unit delivers 8.24 m3/s of air at 15.2°C DB and 85% RH to maintain 26.5°C DB and 50% RH room conditioned. The air conditioning unit extracts 65% by weight of room air. The balance being made up by outside at 34.7°C DB and 60% RH. Determine the following: a. mass flow rate of supply air in kg/s b. sensible heat load in kW at the conditioned room c. latent heat load in kW at the conditioned room d. total heat load in kW at the conditioned room e. refrigeration load in kW
Moodle in the Cloud 0% In turbochargers a turbine is directly connected to a compressor. The power harvested by the turbine is used to power the compressor. In the figure below a turbine runs on steam and powers a compressor on air. Air can be considered a perfect gas with k = 1.34, R = 0.28 kJ/kgk and cp = 1.02 kJ/kgK. The air enters the compressor at p₁ 1bar, T₁ = 300K and a mass flow rate of mdot = 5.9 kg/s and exits at p2 = 5.2 bars. The steam enters the isentropic turbine at P3 = 2 MPa, T3 = 320°C and exits at p4 = 100 kPa. = State 2 Isentropic Compressor State 1 Air - perfect gas T₁ = 300K P₁= 1 bar Get Help Answer: W = ? tubine State 4 Isentropic Turbine State 3 Steam T,=320°C P3= 2MPa What is the power produced by the turbine? Please enter your answers in kW.
The following data refers to an air conditioning system to be designed for an industrial process for hot and wet climate. Outside conditions = 38o C DBT and 74 % RH. Required conditions are 23o C DBT and 65 % RH. This is achieved by cooling and dehumidifying and then by heating. If 42 m 3 of air is absorbed by the plant every minute, find the capacity of cooling coil in TR, capacity of heating coil in kW and amount of water removed per hour
A reciprocating air compressor takes in air at 1 bar, 25 deg. C, and compresses it to a pressure of 5 bar running at 300 rpm. The compression follows the PV1.3=C. The clearance is 4% of stroke volume and mass flow rate of air 0.1 kg/s. Determine the power input to the compressor, and volumetric efficiency. Represent the process on p-v and T-s planes. Assume for air R=287 J/kg.K
HVAC UPVOTE WILL BE GIVEN. ANSWERS ARE GIVEN ALREADY. PLEASE WRITE THE COMPLETE SOLUTIONS. 2. A room being air conditioned is held at 25°C db & 50% RH. A flow rate of 5m³/s of supply air at 15°C db & 80% RH is being delivered to the room to maintain steady condition at 100 kpa. What is the sensible heat absorbed from the room air in kw? 2. A room being air conditioned is held at 25°C db & 50% RH. A flow rate of 5m³/s of supply air at 15°C db & 80% RH is being delivered to the room to maintain steady condition at lookpa. What is the sensible heat absorbed from the room air in kw? a) 50.8 b) 60.8 c) 40.5 d) 70.9 c)40.5 d) 70.9
Find the mass of water, in kg, that can be cooled from 24 0C to -80C from a 10 tons refrigeration system for 15 hrs. ANSWER: 4197.930 kg A refrigeration system is used to cool water in the evaporator at 3 kg/s of water from 22 oC to ice. Find the tons of refrigeration required. ANSWER: 364.48805 TR A two stage cascade refrigeration system uses R-11 as the working substance. The evaporator is at -30 0C and the high pressure condenser is at 300C. The cascade condenser is a direct contact type. The refrigeration load is 24 tons. Given that, h2 = 393 kJ/kg; h6 = 408 kJ/kg. Find the mass flow rate in the low pressure loop. ANSWER: 0.4771 kg/s
In an axial flow compressor air enters at 1 bar and 15 deg C. It is compressed through a pressure ratio of four. Find the actual work of compression and temperature at the outlet from the compressor. Take the isentropic efficiency of the compressor to be equal to 0.84. A. 147.66, 454.83 K C. 167.66, 454.83 K kg B. 157.66 444.83 K D. 177.66- 444.83 K
1- A boiler plant comprises a boiler, superheater, economizer and air preheater. The feedwater enters the economizer at 45 °C. Air is preheated from a temperature of 15 °C to 150 °C. The steam is generated in the boiler at a pressure of 35 bar, 0.98 dry and leaves the superheater at 350 °C. When using oil of calorific value 42 MJ/kg, the evaporation rate is 10 kg steam per kg fuel and the air to fuel ratio is 20: 1 by mass. Neglecting heat losses and pressure drops, estimate the heat transfer per kg fuel in each component and the plant efficiency. Assume cp for air and flue gas as 1.005 and 1.045 kJ/ kg K, respectively.
A spark ignition engine takes in air at 14.7 psia and 82°F. The engine takes in 1300 BTU/lbm during the combustion process. Inside the piston-cylinder the clearance is 11%. Determine the following: a. Pressure, specific volume & temperature at each state b. Work, per unit mass c. Heat Rejected
An air-conditioning system is shown in the figure below in which air flows over tubes carrying Refrigerant 134a. Air enters with a volumetric flow rate of (AV)1 = 130 m3/min at 32°C, 1 bar, and exits at 22°C, 0.95 bar. Refrigerant enters the tubes at 5 bar with a quality of 20% and exits at 5 bar, 20°C. Ignoring heat transfer at the outer surface of the air conditioner, and neglecting kinetic and potential energy effects, determine at steady state:(a) the mass flow rate of the refrigerant, in kg/min.(b) the rate of heat transfer, in kJ/min, to the air from the refrigerant.
ASAP
There are required 1902.3 kW of compressor power to handle air adiabatically from 1 atm, 26.7 C to 304.06 kPaa. The initial velocity air velocity is 21 m/s and the final velocity is 85 m/s. a). If the process is isentropic, find the volume of air handled, m3/min measured at inlet conditions. b). If the compression is an irreversible adiabatic to a temperature of 157.2 C, with the capacity found in (a), find the power input, kW

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