BTU5. A heat exchanger has been designed based on calculated Uc (clean H.T coefficient) equal to 50;h. ft².°Fh. ft².°Fanda dirt/fouling factor of 0.005IDo you think that the exchanger will have an "apparent overdesign"BTU(i.e., the initial area will be different from the final area once the HX is fouled) for some period afterinstallation? What is the apparent % excess area at the start, assuming no change in q?

Answered: Image /qna-images/answer/32b20bad-bc24-4e0a-8ea7-0466764df376.jpg

BTU 5. A heat exchanger has been designed based on calculated Uc (clean H.T coefficient) equal to 50; h. ft².°F h. ft².°F and BTU a dirt/fouling factor of 0.005 Do you think that the exchanger will have an "apparent overdesign" (i.e., the initial area will be different from the final area once the HX is fouled) for some period after installation? What is the apparent % excess area at the start, assuming no change in q?

BTU 5. A heat exchanger has been designed based on calculated Uc (clean H.T coefficient) equal to 50; h. ft².°F h. ft².°F and BTU a dirt/fouling factor of 0.005 Do you think that the exchanger will have an "apparent overdesign" (i.e., the initial area will be different from the final area once the HX is fouled) for some period after installation? What is the apparent % excess area at the start, assuming no change in q?

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

Idehtify a) i, ii and iii b) i and ii c) ii and ii d) i and ii 2- A single pass shell and tube heat exchanger, consisting of a bundle of 100 tubes (inner diameter 25 mm and thickness 2 mm) is used for heating 28 kg/s of water from 25 degree Celsius to 75 degree Celsius with the help of a steam condensing at atmospheric pressure on the shell side with condensing heat transfer coefficient 5000 W/m? degree. Make calculation for overall heat transfer coefficient based on the inner area. Take fouling factor on the water side to be 0.002 m² degree/W per tube and neglect effect of fouling factor on the shell side and thermal resistance of the tube wall th2 th1 = th2 = 50C th1 to2 Cols fluid (water) te1 =20 a) 647.46 W/m² degree b) 747.46 W/m? degree c) 847.46 W/m' degree d) 947.46 W/m degree 3- Consider the above problem, if the fluid flow rates and the inlet conditions remain
Please no written by hand solutions A 4-ton heat pump is installed. Desired flow rate is 12 USgpm. The runner and header from the Mechanical room is 110 feet in delivery and 110 feet in return. The fluid running in the system is Methanol-20%. The ground loop consists of three parallel vertical loops each 290 feet in length. The ground loop is made of 0.75" HDPE SDR 11 pipes and the runner-header is made of 1.25" HDPE SDR 11 pipes. The heatpump pressure drop is given 5.8 ft of wc for a flow of 6 gpm of water (Correction factor 20% Propylene Glycol:1.36, 20% Methanol: 1.25, 25% Ethanol: 1.32). Q: Calculate the pressure drop in the Runner-Header. Question 11 options: 9.9 ft of wc 5.8 ft of wc 7.3 ft of wc 3.8 ft of wc 13.4 ft of wc 2.9 ft of wc
all questions please thank you so much
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).
I am confused with the equation for COP , please explain the equation that you use for calculation.
Task 03 B) Double-pipe heat exchangersare used in many industries because of their low design and maintenance costs, flexibility, and low installation cost. They are mainly used for sensible heating or cooling of process fluids in applications of small heat transfer Water at the rate of 68 kg/min is heated from 35 0C to 75 0C by an oil having specific heat of 1.9 kg/kJ.0C . The fluids are used in a counter flow double-pipe heat exchanger, and the oil enters in the exchanger at 175 0C and leaves at 140 0C . The overall heat transfer coefficient is 320 W/m2. 0C . Apply heat transfer formulae to heat exchangers and calculate the heat exchanger area.
Show complete solution and illustration please.
9.) Milk at 40 ° C with a specific heat of 3.85 kj / kg K will be pasteurized at 75 ° C by using saturated steam at 120 ° C in a plate heat exchanger. The heat exchanger operates in parallel flow. What is the milk rate? The data required for steam is given in the table below. Enthalpy (MJ / kg) Temperature (°C) Absolute pressure (kpa) Saturated liquid Evaporation Saturated Steam 75 38.5575 0.31394 2.3214 2.6354 120 198.54 0.50372 2.20225 2.70607 A.)0.017 B.)56.33 C.)68.7 D.)0.056 E.)17.75