b. the apparatus detw p cp Prob #7] An air conditioned auditorium with a capacity of...
Prob. # 2] The temperature to be maintained in an office building is 26 C DB heat is 77.6 kW and the latent heat gain is 14.3 kW. Th accomplished by passing it through a spray-type heated to 18 C then supplied to the room. Find and 18 C W B. The sensible e cooling and dehumidifying of the air is washer with water chilled by refrigeration. The air is then a. the apparatus dew point temperature of washer, b....
An Conference Center is to be air-conditioned for a seating capacity of 3200 people for the following outdoor and comfort conditions a) Outdoor design conditions = 35 °C, db and 65% R.H b) Indoor/return design conditions-26 deg C. db and 55% RH. c) Total sensible room load = 420,000 kJ/hr d) Total latent room load = 200,000 KJ/hr e) The rise in dry bulb temperature of the air inside the conference center is limited to 9 °C (i.e. the Supply...
o question: An airconditioned space is to be maintained at 26 C dry bulb temperature and 50% RH. The ambient condition is 4 27.78 kW and the latent load is 11.11 kW. 60% of the return air mass is recirculated and mixed with 40% of make-up fresh air before entering the AHU. Calculate: Room SHF -Supply flow rate (m'/sec) (assume supply temperature is 10 C lower than space's) Apparatus sensible and latent load Apparatus sensible heat factor, dew point, and...
Subject Refrigeration and Air Conditioning. Please answer in detail. QUESTION 4 - COOLING AND DEHUMIDIFYING COILS An air conditioned space at 1700 metres altitude has a sensible heat gain of 26 kW and a latent heat gain of 6.5 kW. The space is maintained at 25°C dry bulb and 18°C wet bulb temperature:s The fresh air supply is to be 0.65 m3/s at 35°C dry bulb and 24°C wet bulb temperatures. The air leaving the coil has a relative humidity...
PROBLEM 2. (20 POINTS) A space to be maintained at 25 C dB (dry bulb) temperature and 18°C wB (wet bulb) has a rate of sensible-heat gain of 25 kWand a rate of moisture gain of20 kg/hr. Moist air enters the space at a dry-bulb temperature of 15°C. Outdoor air at 35 C dB temperature and 25 C wB is supplied for ventilation purposes at a rate of 400 Us (litres per second) of standard air. After leaving the room,...
Example: The sensible- and latent-heat gains in a space served by a single-zone air conditioner are 65 and 8 kW, respectively. The space is to be maintained at 24 oC and 50% relative humidity. The design conditions of outdoor air are 35 oC dry-bulb and 25 oC wet-bulb temperatures. For ventilation purposes outdoor air is mixed with recirculated air in a 1:4 proportion. When mixed air at the resulting conditions enters the cooling coil, the outlet air conditions are 12...
Question 4 Page 15 It is required to 125 marks] design a cold storage for storing vegetables with the following available data Outside design conditions 36°C DBT. 28 C WBT Inside design conditions T2 19°C DBT, 60% RH Infiltrated air 180 mhr V ms-7.83 kg/s Fresh air supplied from outside 4500 mhr Total mass of air supplied to the room Sensible heat gain through glass SH,5.5AW Sensible heat gain through walls and roof H 10.8 kW Ihr KJ Sensible heat...
In an air-conditioned office, the dry bulb temperature of the supply air is 15°C. The state of air in the office has dry bulb temperature of 26°C and relative humidity of 52%. By using anemometer, it is measured that the flow rate of the recirculated air is 60.34 m3 /min. The HVAC system takes 18 m3 /min of outdoor air at 35°C and 55% relative humidity. The sensible heat ratio for the cooling coil is known to be 50%. Determine:...
Question NO. 3 (25 points) A space to be maintained at 27°C dry-bulb temperature has a rate of sensible-heat gain of 13 kW and a rate of latent heat gain of 8.5 kW. The system used to condition the space to the required conditions. The mass flow rate of air supplied to the space is 1.1 kg/s. Outdoor air at 38 °C dry-bulb temperature and 17 ℃ dew-point temperature is introduced into the system at a rate of 0.28 kg/s....
a. the sensible heat ratio (SHR) for the cooling and dehumidifying process; (2 Marks) b. the supply air volume flow rate to the office in m3 /s; (5 Marks) c. the air dry bulb temperature and specific enthalpy of the mixture of outdoor and recirculating air; (4 Marks) d. the cooling coil’s load in kW. (5 Marks) e. the apparatus dew point during the cooling and dehumidifying process; and (4 Marks) f. Discuss, with reasons, the possible effects on the...