A chilled water cooling coil receives 2.5 m3/s of air at 25 C db, 20 C wb. It is necessary for the air to leave the coil at 13 C db, 12 C wb. Assume sea level pressure. (a) Determine the SHF and the apparatus dew point. (b) Compute the bypass factor. (c) Compute the total and sensible heat transfer rates from the air using enthalpy difference and the SHF. (d) Compute the total and sensible heat transfer rates from the air using the bypass factor and the SHF.

I. In an air conditioning unit, 3.5 m³/s of air at 27°C dry bulb temperature 50%RH at 100.325 kPa barometric condition enters the Airconditioned Unit (ACU). The leaving condition of the air is 13°C dry bulb and 90% RH. Determine: a. Sensible Heat that was being removed/ added from the ACU? b. Moisture that is being removed/added from the air leaving ACU?

Q3 : 3 4500 m³ / hr of air at 45 ° C DBT and 10 % RH enters an evaporative air cooler . The air leaves the air cooler at 80 % RH . Find , ( 1 ) Minimum water temperature at the basin of the air cooler . ( 2 ) The moisture rate added to the air . ( 3 ) The sensible and latent heat exchange . ( 4 ) The effectiveness of the air cooler .

Can you explain the process of this refrigeration and cryogenic plant for liquid oxygen production?

I need the answer as soon as possible

ercise 6 6.1 A surface condenser is fitted with separate air and condensate outlets. A portion of the cooling surface is screened from the incoming steam and the air is passes over these screened tubes to the air extraction and becomes cooled below the condensate temperature. The condenser receives 20 000kg/hr of dry saturated steam at 36.2°C. At the condensate outlet the temperature is 34.6°C TK and at the air extraction the temperature is 29°C. The volume of air and vapour leaving the condenser is 3.8m3/min. Assume constant pressure throughout the condenser, calculate: 6.1.1 the mass of air removed per 10 000kg of steam (2.63kg); 6.1.2 the mass of steam condensed in the air cooler per minute (0.5kg/min)%3B 6.1.3 the heat rejected to the cooling water (13451kW).

A single effect evaporator is used to concentrate 10 000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 25 ° C. The evaporator is operated on Steam (80% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it    (a) Steam demand rate = Answer   kg / hour.    b. Steam economy when condensate temperature is released at 75 ° C. = Answer   (kg of water evaporated / kg of steam)

السؤال الثالث The thermodynamic properties of refrigerant R22 mixture of liquid and vapor leaving the expansion device and entering the evaporator are: pressure of 498 KPa, temperature of 0 °C, fraction dryness (x) of 0.238, saturated liquid enthalpy of 200 kJ/kg, and saturated vapour enthalpy of 405 kJ/kg. The pressure of this refrigerant at the entrance of the condenser is measured to be 19.3 bar After the subcooling process, the enthalpy in (kJ/kg) and the pressure in (MPa) of this refrigerant have been measured and were found to be 199 47 kJ/kg and 2.3 MPa. 239. 68 kJ/kg and 1.96 MPAO 248.79 kU/kg and 1.93 MPa 110 52 kJ/kg and 3.1 MPa 1:29 PM 91°F Sunny 5/14/2022

Exercise-47: It is required maintain an air conditioned hall at DBT=28 °C, and WBT=20 °C, Q = 45.4 kW, Q = 16.5 kW. Outside air at DBT=39°C, and WBT=28 °C is mixed with the return air is ratio of (1/4) by volume and then mixture is passed through a cooling coil with apparatus dew point temperature of 9 °C, determine; the temperature of the air after the cooling coil, volume flow rate of air supplied to the hall, BPF, cooling coil load, plot the processes of the system.

Considering now the real case, where the turbine and feed pump are not isentropic, and the feed pump electric motor and the electric generator are not 100% efficient, Determine for unit mass flow rate of refrigerant circulated, the quantities (I) to (VI) as listed above, briefly contrasting the values calculated here and those calculated,