Liquid water is heated inside the tubes of a shell and tube heat exchanger as shown in the figure below.. The inlet temperature is 30 °C and the outlet temperature is 50 °C. The tube inside and outside diamters are 16 mm and 18 mm respectively. The mass flow rate in each tube is 0.25 kg/s. Refrigerant Gas Water Out Water In Refrigerant Liquid Estimate: a) The average velocity in each tube: b) The Reynolds number in each tube: c) The Nusselt Number of the flow inside each of the tubes: m/s

Liquid water is heated inside the tubes of a shell and tube heat exchanger as shown in the figure below.. The inlet temperature is 30 °C and the outlet temperature is 50 °C. The tube inside and outside diamters are 16 mm and 18 mm respectively. The mass flow rate in each tube is 0.25 kg/s. Refrigerant Gas Water Out Water In Refrigerant Liquid Estimate: a) The average velocity in each tube: b) The Reynolds number in each tube: c) The Nusselt Number of the flow inside each of the tubes: m/s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

in a 10-m long center-current flow tubular heat exchanger, a liquid food, flowing in the inner pipe (inside diameter 5 cm), is heated from 4 to 60 C for pasteurization. In the outer tube (diameter 10 cm), hot water enters at 95 C and exits at 80 C. A) If the mass flow rate of the hot water is 5 kg/s, what is the flow rate of the pasteurized product? The specific heat of the water is 4.2 kJ/(kg C), specific heat of product is 3.8 kJ/(kg C) B) what is the log mean temperature difference C) What is the overall heat transfer coefficient for the heat exchanger based on the outside surface?
In a single-body, four-pipe transition heat exchanger, the hot combustion product gases are cooled by water. Flow rate of gases 3 kg /s, specific temperature 0.95 kJ / kg. C; water flow 0.2 kg / s, specific temperature 4.2 kJ / kg.°C. The total heat transfer coefficient of the heat exchanger is 300 w / m2.K, heat transfer surface area is 10 m2. a) the heat transfer that occurs and the output temperatures of both fluids; b) find the logarithmic mean temperature difference. GASES 220 °C WATER 10 °C
7) Outlet Temperature and Heat-Transfer Rate via Minimum Allowable Approach Temperature. Hot oil at a flow rate of 3.00 kg/s (Cp = 1.92 kJ/(kg-K)) enters an existing 1-1 counterflow exchanger at 400 K and is cooled by water entering at 325 K (under pressure) and flowing at a rate of 0.70 kg/s. The overall U = 350 W/(m².K) and A= 12.9 m². Calculate the heat-transfer rate and the exit oil temperature if the minimum allowable approach temperature is to be 10 °C (10 K).
if A 22 C Water enters a heat exchanger with a velocity 0.8 m/s and tube diameter is 10 mm, it leaves at 34 C what is the heat transferred to water. in kW 3.157 O 31.569 O 3.94 O
Air with a density of 2.21 kg/m3 enters a nozzle with inlet cross sectional area of 80 cm2, the inlet velocity is 20 m/s, then the mass flow rate of air through the nozzle is: Select one: a. 0.35 b. 0.53 c. 0.40 d. 0.31 e. none of the mentioned
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE
Q:: Flow of hot air through uninsulated square ducts of a heating system in the attic . Determine the exit temperature and the rate of heat loss. Taking k = 0.02953 W/m. C, v= 2.097x10* mis, Pr = 0.7154, kg/m C,=1008 Ans : 75.7 "C , 941.1 W Jkg."C rP = 0.9994 Tom 0mmin
Q.2. Air enters a steady-flow heat exchanger with a mass flow rate of 2 kg/s as shown in Figure. Determine (a) the rate of heat transfer to the air in the heat exchanger, (b) the power output from the turbine assuming no heat loss, and (c) the velocity at exit from the nozzle. (Cp atr = 1.005 kJ/kg. K) T=600 C T- 12 C V=3 m/s Air Нeat v-3 m/s Exchanger Turbine T= 200 C V - 25 m/s T= 160 C Nozzle
A heat exchanger uses medium pressure steam at 10 bar and 350 C to heat cyclohexane vapor from 100 C up to 275 C as shown in the figure below. The steam is available at a flowrate of 32 kg/h and it condenses completely in the heat exchanger and exits as saturated liquid condensate at 10 bar. a) How much heat (in kW) can be provided by the steam? b) How much cyclohexane can be processed in kg/h? Vapor Cyclohexane T = 100 C P = 1 atm Steam T = 350 C = 10 bar Condensate P Vapor Cyclohexane T = 275 C P = 1 atm P = 10 bar
1.23. Forced air flows over a convective heat exchanger in a room heater, sulting in a convective heat transfer coefficient h 200 Btu/h-ft?.°F. The surface temperature of the heat exchanger may be considered constant at 150 °F, and the air is at 65 °F. Determine the heat exchanger surface area required for 30 000 Btu/h of heating. Ans 1.765 fi?
Homework: A counterflow heat exchanger is located between a collector and a storage tank. The fluid in the collector side is a water-glycol mixture with cp=3840 J/kg. °C and a flow rate of 1.35 kg/s, whereas the fluid in the tank side is water with a flow rate of 0.95 kg/s. If the UA of the heat exchanger is 5650 W/°C, the hot glycol enters the heat exchanger at 59°C, and the water from the tank at 39°C, a) estimate the heat exchange rate; b) if FRUL is 5.71 W/m².°C and collector area is 16 m², what is the ratio FR/FR?
SEMIFINAL PROJECT IN ME 3215 COMBUSTION ENGINEERING PROBLEM: Cooling water for 507 Horsepower Diesel Engine is to be cooled by using an intermediate cooling heat exchanger as follows. At Counterflow Heat exchanger. Jacket water in --- 60 °C Jacket water out 38 °C Tower water in 27 °C Tower water out - -54 °C To be done: Make the necessary valid assumptions and calculate the flow through heat exchanger for the following quantities: kg 1. Jacket water, in sec kg 2. Tower water, in sec to coling o NEAT EXCNANGER DESEL ENGE from cool