Basic Chemical Engineering Knowledge: Two questions per day: November 8, 2010
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This post was last edited by WSL01218 on 2010-11-9 08:15. 1. Multiple-choice question: In a shell-and-tube heat exchanger, the most common flow direction of the fluids is ( ). A. Counterflow B. Cross-flow C. Co-flow. 2. Fill in the blank: When using a carbon dioxide fire extinguisher to put out a fire, one’s hand must be held at the ( ) of the nozzle to prevent frostbite of the skin. Note: 1) All participants will receive a reward ； :lol:victory: 2) Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit the replies after posting them. 3) The answers will be released the next day. Answer key: (1) A Counterflow (2) On the wooden handle
(1) Backflow (2) On the wooden handle
This post was last edited by WSL01218 on 11/8/2010 at 12:11. Question 1: A. Question 2: At the root, on the rubber tube next to the metal nozzle
Reply 1# WSL01218 A Wooden Handle
1.A 2, the rubber part at the root, near the nozzle
1. Answer: A 2. Root or handle at the root
In shell-and-tube heat exchangers, the most common fluid flow direction is (A). A. Counterflow B. Cross-flow C. Co-flow. 2. Fill in the blank: When using a carbon dioxide fire extinguisher to put out a fire, one’s hand must be held on the (handle) of the nozzle to prevent frostbite of the skin.