I need to solve question 2. QI- The following data relates to the office air conditioning plant having maximumseating capacity of 25 occupants:Outside design conditionsInside design conditionsSolar heat gainLatent heat gain per occupant = 120 WSensible heat gain per occupant = 100 WLightening loadSensible heat load from other sources = 11000 W= 34°C DBT, 28°C WBT= 24°C DBT, 50% RH= 9120 W= 2500 WInfiltration load= 16 m / mintas(ADP)= 8 °CAssuming 30% fresh air and 70% of recirculated air passing through the evaporator coil andthe by-pass factor of 0.15, find the dew point temperature of the coil, capacity of the plant,Volume flow rate of supply air, Supply air temperature.Q2-A single-pass counter-flow heat exchanger is used to heat water from 8°C to 15°C using hotoil at 130°C. The mass flow rates of water and oil are 2.2 kg/s and 1.9 kg/s respectively. Theirrespective specific heat capacities are 4.2 kJkg-1K-1 and 1.9 kJkg-1K-1. Calculate(1) the temperature of the oil leaving the heat exchanger,(ii) (ii) the log-mean temperature difference (LMTD),(iin) (ii1) the heat transfer area, if the overall heat transfer coefficient is 240 Wm-2K-1, and(iv) the effectiveness.

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Q2- A single-pass counter-flow heat exchanger is used to heat water from 8°C to 15°C using hot oil at 130°C. The mass flow rates of water and oil are 2.2 kg/s and 1.9 kg/s respectively. Their respective specific heat capacities are 4.2 kJkg-1K-1 and 1.9 kJkg-1K-1. Calculate (1) the temperature of the oil leaving the heat exchanger, (i1) (i1) the log-mean temperature difference (LMTD), (i11) (ii1) the heat transfer area, if the overall heat transfer coefficient is 240 Wm-2K-1, and (iv) the effectiveness.

Q2- A single-pass counter-flow heat exchanger is used to heat water from 8°C to 15°C using hot oil at 130°C. The mass flow rates of water and oil are 2.2 kg/s and 1.9 kg/s respectively. Their respective specific heat capacities are 4.2 kJkg-1K-1 and 1.9 kJkg-1K-1. Calculate (1) the temperature of the oil leaving the heat exchanger, (i1) (i1) the log-mean temperature difference (LMTD), (i11) (ii1) the heat transfer area, if the overall heat transfer coefficient is 240 Wm-2K-1, and (iv) the effectiveness.

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 6.2DP

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