A building has a calculated cooling load of 410 kW. The latent portion of the load is100 kW. The space is to be maintained at 25 C DBT and 50% RH. Outdoor air at 38 c and50% RH, and 10% by mass of the air supplied to the space is outdoor air. Air is to besupplied to the space at not less than 18 c. Find::Sa- The minimum amount of air supplied to the space in m³\s,b- The volume flow rates of the return air, exhaust air, and outdoor air,c- The conditions and volume flow rates of the air entering the cooling coil,d- The capacity, apparatus dew point temperature, and by pass factor of the coolingcoil.

Answered: Image /qna-images/answer/65218ec2-659e-4b00-815c-3d6d5c9282b2.jpg

A building has a calculated cooling load of 410 kW. The latent portion of the load is 100 kW. The space is to be maintained at 25 C DBT and 50% RH. Outdoor air at 38 c and 50% RH, and 10% by mass of the air supplied to the space is outdoor air. Air is to be supplied to the space at not less than 18 c. Find:: " a- The minimum amount of air supplied to the space in m³\s, b- The volume flow rates of the return air, exhaust air, and outdoor air, c- The conditions and volume flow rates of the air entering the cooling coil, d- The capacity, apparatus dew point temperature, and by pass factor of the cooling EY S 17 coil..

A building has a calculated cooling load of 410 kW. The latent portion of the load is 100 kW. The space is to be maintained at 25 C DBT and 50% RH. Outdoor air at 38 c and 50% RH, and 10% by mass of the air supplied to the space is outdoor air. Air is to be supplied to the space at not less than 18 c. Find:: " a- The minimum amount of air supplied to the space in m³\s, b- The volume flow rates of the return air, exhaust air, and outdoor air, c- The conditions and volume flow rates of the air entering the cooling coil, d- The capacity, apparatus dew point temperature, and by pass factor of the cooling EY S 17 coil..

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.8P

See similar textbooks

Similar questions

A Copper ball at 40°C is dropped in a mug containing water at 40°C. The heat will Select one: O a.not flow from Copper ball to water or from water to Copper ball O b.flow from Copper ball to water O c increase the termperature of both O d. flow from water to Copper ball
The air handling unit of an air-conditioning plant supplies a total of 4500 cmm of dry air which comprsse by weight 20% fresh air at 40°C DBT and 27 C WBT and 80% recirculated air at 25°C DBT and 50% RH. The air leaves the cooling coil at 13°C saturated state. Calculate the total cooling load and room heat gain. Take Sp. volume of air entcring the cooling coil as 0.869 m/kg d.a. Given: Condition DBT WBT RH Sp. Humidity Enthalpy °C g.w.v.kg d.a. kJ/kg d.a. outside 40 27 17.2 85 AYC inside 25 50 10.0 50.8 100 9.4 37 ADP 13 JADP-Apparatus Dewpoint]
An air conditioning system is to be designed for industrial process for hot and wet summer conditions. The out door air is at 30 °C DBT and 75% RH. The required conditions is to be 22 °C DBT and 70% RH. The amount of free air circulated is 200 cmm. The coil surface temperature is 14 °C and the required conditions are achieved by first cooling with dehumidification and then by heating. Find out: (a) the cooling capacity and BPF of cooling coil (b) the amount of water vapor removed
Room is maintained at 27°C DBT and 50% RH. The outside conditions are 27°C WBT and 40°C DBT. The sensible heat of space is 14 KW. Air at 7°C saturated is supplied to the space, calculate: a- mass of dry air supplied to space b- the space latent heat gain
your A bank of 120-employees is maintained at 24°C db and 50% RH. The heat gain due to heat transfer through walls, roof, ..etc is 10 kW. The outside air temperature is 35°C and its relative humidity is 60%. Calculate the followings: (a) Ventilation air required. (b) Sensible and latent heat gains due to occupants. (CLF = 0.86) (c) Volumetric flow rate of supply air if the supply temperature is 18°C. (d) Volumetric flow rate of moisture removed. (e) Sensible heat ratio of the theater. (f) Relative humidity of the supply air
3. For an air-conditioning system, the outdoor .. and indoor design dry bulb temperatures are 45°C and 25°C respectively. The space to be air-conditioned is 20m x 30m-x 5 m and infiltration is estimated to be one air are 1.2 (kg of dry air)/m³ and 1.02 kJ/(kg of dry air) °C, then the sensible heat load due to infiltration is, nearly
A humidifier in an air heating duct handles 3000 CFM, and increases the moisture content of the air from 30 to 60 g/lb a.s. Calculate the amount of heat needed for the humidifier, if the air is at 80°F.
a tray of liquid water is placed in a freezer where it cools from 20 deg C to "-5" deg C. what is the total amount of energy needed to freeze per unit of liquid water? the specific heat of ice is half of the specific heat of liquid water. the latent heat of fusion for water is 335 kj/kg include diagram
1. A wall of 20 cm thick has the permeability of 2x10" kg/s.m.Pa. The indoor conditions are 25°C and 35 % of RH while the outdoor conditions are 5 °C and 50% of RH. Determine the amount of moisture flowing through a unit surface area of the wall during a 24 hour period. (Hint: The equation J' = Pi-wal Pi1-P1,2 expresses the mass flux of species i within the gas L mixture through a permeable wall. Then, P1 and P2 are being the partial pressures of species i within the mixture. )
Water melts as temp increases because : - chemical potential of the liquid is lower than that of gas - liquid and solid form eutectic mixture -chemical potential of the liquid and solid become equal
A bank of 120-employees is maintained at 24°C db and 50% RH. The heat gain due to heat transfer through walls, roof, ..etc is 10 kW. The outside air temperature is 35°C and its relative humidity is 60%. Calculate the followings: (a) Ventilation air required. (b) Sensible and latent heat gains due to occupants. (CLF = 0.86) (c) Volumetric flow rate of supply air if the supply temperature is 18°C.
The cooling system of a car engine contains 20.0 L of water (1L(1L of water has a mass of 1kg1kg ).a. What is the change in the temperature of the water if the engine operates until 836.0 k of heat is added?