HVAC questions 3. (4 pts) What is the basic approach to build the sections of du
ID: 2087095 • Letter: H
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HVAC questions
3. (4 pts) What is the basic approach to build the sections of ductwork? a. b. c. Start from the fan and work out to the diffusers Start from the end of the duct runs and work toward the fan It doesn't make any difference. Start where you want but make sure that you input all sections. 4. (4pts) When inputting data for a duct section, what must be specified? The downstream duct fitting The length of the duct section The CFM of air flow a. b. c. (4pts) When inputting data for the diffusers, what must be specified? a. b. c. 5. The downstream duct fitting The noise level of the diffuser The CFM of air flowExplanation / Answer
3) c. Start from where you want but consider everything, the main thing to consider uring design of the air ducts is that the length of the duct and care must be taken so as not to create friction by making the duct too narrow also we should consider the amount of air flow because the fan needs to supply air throughout the length of the duct.
4) The CMF.It is actually the measure of airflow in cubic meters.it is needed to make sure that the fan has enough capacity to move the air through the length of the duct.
5) b.Air diffusers are used to shift the air flow to the desired direction when the air leaves the ducts.It must be effective and also work without making much noise.
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