One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 506
Thread Content
This post was last edited by YongBu※YanQi on April 30, 2016, at 15:07. Multiple-choice question: For shell-and-tube heat exchangers that are used over a long period of time, chemical and mechanical methods can be employed to remove dirt both inside and outside the tubes. The purpose of doing this is ( ). A. Increase the heat transfer area B. Increase the heat transfer temperature difference C. Reduce the fouling thermal resistance D. Increase the fouling thermal resistance Answer: C. Reduce the fouling thermal resistance
For shell-and-tube heat exchangers that have been in use for a long time, chemical and mechanical methods can be used to remove dirt from inside and outside the tubes; the purpose of doing this is (C). A. Increase the heat transfer area B. Increase the heat transfer temperature difference C. Reduce the fouling thermal resistance D. Increase the fouling thermal resistance
For shell-and-tube heat exchangers that have been in use for a long time, chemical and mechanical methods can be used to remove dirt from inside and outside the tubes; the purpose of doing this is (C). A. Increase the heat transfer area B. Increase the heat transfer temperature difference C. Reduce the fouling thermal resistance D. Increase the fouling thermal resistance
For shell-and-tube heat exchangers that have been in use for a long time, chemical and mechanical methods can be used to remove the dirt inside and outside the tubes; the purpose of doing this is (C. to reduce the thermal resistance caused by dirt)