Engineering, 03.09.2019 04:20 jeftegerman988

In an air conditioner that cools with r134-a and with a by-pass factor of 0.53, the air enters at 35 (° c) and 70 percent relative humidity at a speed of 5 (m3 / min). the refrigerant (r134a) enters a in the coil at 400kpa with a quality of 20% and leaves as satured vapor. the air at the outlet of the conditioning system can be considered a mixture of air that cools to the temperature of the refrigerant and air that exits in the same conditions as at the inlet. determine: 1. mass flow rate of dry air (kg_a/s).2. air outlet temperature (ºc).3. specific enthalpy (kj / kg_as) and absolute humidity (kg_v / kg_as) of the air at the exit.4. the rate of dehumidification(kg_w / h).5. heat flow rate exchanged between refrigerant and air (kw) .6. mass flow rate of refrigerant (kg / s).7. entropy generated in the refrigerant as a system.8. draw the psychrometric diagram.

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, BardiFan

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Answers: 3

continue

Engineering, 04.07.2019 18:10, alyssabailey7545

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Answers: 1

continue

Engineering, 04.07.2019 18:10, ijohnh14

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Answers: 2

continue

Engineering, 04.07.2019 18:10, xboxdude06

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

Answers: 1

continue

You know the right answer?

In an air conditioner that cools with r134-a and with a by-pass factor of 0.53, the air enters at 35...