The pressure drop across the tube bank is? Required informationAir is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.8-m-long tubes inside which the refrigerant is evaporating at -20°C. Air approaches the tube bank in the normal direction at0°C and 1 atm with a mean velocity of 5 m/s. The tubes are arranged staggered with longitudinal and transverse pitches ofSI = ST = 1.5 cm. There are 25 rows in the flow direction with 15 tubes in each row. Assume the mean temperature as-5°C and the properties of air at this temperature and 1 atm are (Table A-15) k= 0.02326 W/m-K, Cp= 1.006 kJ/kg-K, p=1.316 kg/m3, Pr = 0.7375, µ = 1.705 × 10-5 kg/m-s, and Prs = Pra Ts =-20°C = 0.7408. Also, the density of air at the inlettemperature of 0°C (for use in the mass flow rate calculation at the inlet) is pj = 1.292 kg/m³.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.0°C1 atmV m/s0.8 mAirSr= 1.5 cm0.8 cmS, = 1.5 cm/Refrigerant, –20°C

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Mechanical Engineering

The pressure drop across the tube bank is?

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 6.42P

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Concept explainers

Pressure Vessels

The term pressure vessel refers to a closed container that contains gas or liquid at a different pressure than environment pressure. The pressure vessels have a wide scale of applications in our day-to-day lives and other industrial places. Some common examples of pressure vessels are gas cylinders, autoclaves, compressor vessels, etc.

Question

The pressure drop across the tube bank is?

Required information
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.8-
m-long tubes inside which the refrigerant is evaporating at -20°C. Air approaches the tube bank in the normal direction at
0°C and 1 atm with a mean velocity of 5 m/s. The tubes are arranged staggered with longitudinal and transverse pitches of
SI = ST = 1.5 cm. There are 25 rows in the flow direction with 15 tubes in each row. Assume the mean temperature as
-5°C and the properties of air at this temperature and 1 atm are (Table A-15) k= 0.02326 W/m-K, Cp= 1.006 kJ/kg-K, p=
1.316 kg/m3, Pr = 0.7375, µ = 1.705 × 10-5 kg/m-s, and Prs = Pra Ts =-20°C = 0.7408. Also, the density of air at the inlet
temperature of 0°C (for use in the mass flow rate calculation at the inlet) is pj = 1.292 kg/m³.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
0°C
1 atm
V m/s
0.8 m
Air
Sr= 1.5 cm
0.8 cm
S, = 1.5 cm/
Refrigerant, –20°C

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