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gladu [14]
3 years ago
10

What's a disadvantage of highest MERV-rated filters?

Engineering
2 answers:
Arte-miy333 [17]3 years ago
3 0

Answer:

3) the pressure drop across high MERV filters is significant.

Explanation:

MERV (Minimum-Efficiency Reporting Value) is used to measure the efficiency of filter to remove particles. A filter of high MERV can filter smaller particles but this causes an increase in reduced air flow that is an increase in pressure drop. High MERV filters capture more particles causing them to get congested faster and thereby increasing pressure drop.

Excessive pressure drop can cause overheating and lead to damage of the filter. The pressure drop can be reduced by increasing the surface area of the filter.

QveST [7]3 years ago
3 0

Answer:

3) The pressure drop across high MERV filters is significant.

Explanation:

The higher the MERV filter rate is, the most efficient it will be when it comes to trapping small particles. This comes with a cost. Since the space between fibers is smaller, this translates into a higher pressure drop. This is a disadvantge since in air conditioning or ventilation systems, the higher the pressure drop, the biggest the equipment and the most expensive it is.

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Timken rates its bearings for 3000 hours at 500 rev/min. Determine the catalog rating for a ball bearing running for 10000 hours
svet-max [94.6K]

Answer:

C₁₀ = 6.3 KN

Explanation:

The catalog rating of a bearing can be found by using the following formula:

C₁₀ = F [Ln/L₀n₀]^1/3

where,

C₁₀ = Catalog Rating = ?

F = Design Load = 2.75 KN

L = Design Life = 1800 rev/min

n = No. of Hours Desired = 10000 h

L₀ = Rating Life = 500 rev/min

n₀ = No. of Hours Rated = 3000 h

Therefore,

C₁₀ = [2.75 KN][(1800 rev/min)(10000 h)/(500 rev/min)(3000 h)]^1/3

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<u>C₁₀ = 6.3 KN</u>

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3 years ago
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Rina8888 [55]
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5 0
3 years ago
What is the benefit of theories? they are easily disproven they are written by famous people they were applying every circumstan
OlgaM077 [116]

Answer:

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3 0
2 years ago
technician A says that voltage is electric pressure .Technician B says the amperage is electrical flow who is right
Dmitrij [34]

Answer:

I would say technician A

Explanation:

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electromotive force is pressure so technician A would make sense.

5 0
3 years ago
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