Homework Answers
(a) Index run for this system is A-C, as maximum pressure drop is in A-C (6.015 Pa/m)
(b) diameter,D = 0.315 m
(c) as damper reduces the exit velocity, and the required flow rate will not be achievable, (as given area of pipe is constant.)
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this is heat and air conditioning question, please i want the
solution due date is saturday...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section (40 cm x 80 cm). Air at atmospheric pressure and temperature of 20c flows inside the duct with velocity of 7 m/s. The cross sectional srea snd definition of characteristic length for the duct are given in Figure 2. The duct is assumed to be m long. The flow inside the duct is assumed fully developed. (a)Find properties of air using suitable value of...
2) Figure 2 shows a typical duct layout. Design the duct system using equal friction method....
2) Figure 2 shows a typical duct layout. Design the duct system using equal friction method. Take the velocity of air in the main duct (A) as 9 m/s. Estimate the static pressure in the index run of the duct network. There is a pressure drop of 15 Pa each at the outlet grilles. Assume the resistance of the fittings at 10 Pa for elbow and 15 Pa for Tee. (10 marks) 2 m/s 2 1 mºls 3 D F...
A ducting system has to distribute 63 CMM of dehumidified air to the rooms (R1, R2,...
A ducting system has to distribute 63 CMM of dehumidified air to
the rooms (R1, R2, R3, R4 and R5) of a building as shown in the
picture. The flow quantities of each diffuser are given in the
table.
The total pressure available is 5.2mm of water and the pressure
loss at each uotlet diffuser is assumed to be equal to 1 mm of
water. The lengths of each duct segment are shown in the picture.
The equivalent straight length...
Please show work 11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity...
Please show work
11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity f 40 percent enters the cooling section of an air-conditioning system at a rate of 10 kg/s and is cooled to 18°C. Determine the volumetric flow rate of the air leaving the cooling section, the heat-transfer rate required for this process, and the entropy change of the air per unit mass of dry air. If the velocity of the airstream is not to exceed...
I need your help solving this thermodynamics problem please: Question Completion Status: QUESTION 1 20 points...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
pleas help me in this do any question you know using National Electrical Code 2011 Applied Electricity NEC...
pleas help me in this do any question you know using National
Electrical Code 2011
Applied Electricity NEC worksheet t hree Copper conductors with THHN insulation run in Electrical A branch-circuit Consther conductors. The conductor terminations are rated for a maximum ure in the area of this installation is not expected to exceed 30C size 8 AWG, the maximum ampacity of the conductors If the conductors for this circuit are permitted A 40 amperes. B. 50 amperes. to be used...
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section (40 cm x 80 cm). Air at atmospheric pressure and temperature of 20c flows inside the duct with velocity of 7 m/s. The cross sectional srea snd definition of characteristic length for the duct are given in Figure 2. The duct is assumed to be m long. The flow inside the duct is assumed fully developed. (a)Find properties of air using suitable value of...
2) Figure 2 shows a typical duct layout. Design the duct system using equal friction method. Take the velocity of air in the main duct (A) as 9 m/s. Estimate the static pressure in the index run of the duct network. There is a pressure drop of 15 Pa each at the outlet grilles. Assume the resistance of the fittings at 10 Pa for elbow and 15 Pa for Tee. (10 marks) 2 m/s 2 1 mºls 3 D F...
A ducting system has to distribute 63 CMM of dehumidified air to
the rooms (R1, R2, R3, R4 and R5) of a building as shown in the
picture. The flow quantities of each diffuser are given in the
table.
The total pressure available is 5.2mm of water and the pressure
loss at each uotlet diffuser is assumed to be equal to 1 mm of
water. The lengths of each duct segment are shown in the picture.
The equivalent straight length...
Please show work
11-43·Atmospheric air with a dry bulb temperature of 30°C and a relative humidity f 40 percent enters the cooling section of an air-conditioning system at a rate of 10 kg/s and is cooled to 18°C. Determine the volumetric flow rate of the air leaving the cooling section, the heat-transfer rate required for this process, and the entropy change of the air per unit mass of dry air. If the velocity of the airstream is not to exceed...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
pleas help me in this do any question you know using National
Electrical Code 2011
Applied Electricity NEC worksheet t hree Copper conductors with THHN insulation run in Electrical A branch-circuit Consther conductors. The conductor terminations are rated for a maximum ure in the area of this installation is not expected to exceed 30C size 8 AWG, the maximum ampacity of the conductors If the conductors for this circuit are permitted A 40 amperes. B. 50 amperes. to be used...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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