# Group 1 4 Ch Ea

67 %
33 %
Information about Group 1 4 Ch Ea

Published on February 8, 2009

Author: 4ChEAB08

Source: slideshare.net

Group 1 4 CheA Tan, Maria Kimberly L. Costales, Rose Ann Katigbak, Donald Averilla, Gerard Lagmay, Marvin

1. For a counterflow heat exchanger, operating at moderate temperature, with no phase change. The hot rod is twice that at the cold end. Estimate the effective exchanger length (measured from the cold end) and half the heat loss. q= U A ∆Tlm ½ q= U π DL ∆Tlm (1/2 q)/ (U π D∆Tlm)= L

1. For a counterflow heat exchanger, operating at moderate temperature, with no phase change. The hot rod is twice that at the cold end. Estimate the effective exchanger length (measured from the cold end) and half the heat loss.

9. It is proposed to condense 7 kg/sec of saturated Freon 12 vapor in a refrigeration system by allowing it to flow on the outside surface of a vertical 1” O.D. (18 BWG) copper tubes. Cooling water enters the tubes at 24oC and leaves the system at 38oC and leaves the system with a velocity of 3 m/s. Calculate: a) the number of tubes in parallel needed in the system b) the Length of each tube

9. It is proposed to condense 7 kg/sec of saturated Freon 12 vapor in a refrigeration system by allowing it to flow on the outside surface of a vertical 1” O.D. (18 BWG) copper tubes. Cooling water enters the tubes at 24oC and leaves the system at 38oC and leaves the system with a velocity of 3 m/s. Calculate: a) the number of tubes in parallel needed in the system b) the Length of each tube

1” OD 18 BWG copper tubes: Do= 1” Di= 0.902 in. K=250 W/mk T= -28.3 C temperature Heat of condensation -25 13.33 T 10.37 -30 8.86

## Add a comment

 User name: Comment:

## Related pages

### EA Games - Electronic Arts

Of EA For \$4.99 A Month ; Featured Games. Plants vs. Zombies Garden Warfare 2; Unravel; Star Wars Battlefront; ... Browse and buy Electronic Arts games, ...
Read more

### Electronic Arts - YouTube

Customer Service http://www.support.ea.com Are you a top YouTube gamer? ... 1 month ago; 2:11. Play ... Battlefield 4 Legacy Operations Cinematic Trailer ...
Read more

### EA SPORTS | Sports video games | Football, Soccer, Golf ...

ea sports ufc mobile king of the course ... ea games. star wars battlefront need for speed plants vs. zombies™ garden warfare ...
Read more

### EA Hilfe Startseite - EA Help Home

Hilf uns, die EA Hilfe zu verbessern! Umfrage starten Nein, danke. Hilfe Deutschland. United States; Australia; Brasil; Canada; Canada (français) Ceska ...
Read more

### NHL 16 | Videospiel von EA SPORTS

EA SPORTS NHL Hockey Games | NHL Hockey Video Games | EA SPORTS
Read more

### Origin: Powered by EA | Origin Games

Origin brings you great PC and Mac games. ... The Sims™ 4 Romantic Garden Stuff. ... Origin is where you go to find the best that EA has to offer.
Read more

### Home | EA Careers

Applicants with disabilities may contact us by sending an email to accessibility@ea.com for assistance accessing our careers.ea.com website.
Read more

### Origin (Vertriebsplattform) – Wikipedia

9.11.6 (PC), 9.4.25 Mac (25. März 2015 ... Der EA Downloader startete Ende ... Ab der Version 9.1.6 ist Origin auch für das Betriebssystem Mac OS ...
Read more

### A value - Wikipedia, the free encyclopedia

A-Value Substituent A-Value; D: 0.006: CH 2 Br: 1.79: OSi ... the tert-butyl group (A-value=4.9) has a larger A-value than the trimethylsilyl group (A ...
Read more