ME222 Reverse Egineering Day 4, Vacuum Cleaner Memo

# ME222 Reverse Egineering Day 4, Vacuum Cleaner Memo - Memo...

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Memo To: Adam Greer/Swathi Chimalapati From: Alex Hyatt Date: 10/03/2007 Re: Vacuum Cleaner Test Our engineering firm, ME 222 Engineering Consultants, has been hired by the Dust Tiger Vacuum Company to test a new vacuum cleaner design. The test is to be conducted according to the procedure documented in “ME 222: Vacuum Cleaner Performance Test”. This procedure is derived from a standard from the American Society of Testing and Materials F 588-03.

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Introduction The Dust Tiger Vacuum Company has asked the ME 222 Engineering Consultants to compare the performance of two vacuum cleaners, a Bissell vacuum and a Eureka vacuum. Performance will be characterized based on the suction that each vacuum develops under varying load conditions. The suction and the power of each vacuum are recorded for different orifices being suctioned. From those three values, the volumetric flow, Q, flow coefficient, K 1 , area of the orifice plate, A 0 , pressure difference across the orifice plate, ∆P, air density, ρ, fluid power, P dot, and finally the efficiency could be found. All of the other variable had to be found to find the efficiency of the vacuum for each orifice. As an initial guess after recording these results, I would think that the Bissell would have a higher efficiency because its suction is higher which is the h1 – h2 in Figure 1. Procedure The first step for this experiment is to measure the barometric pressure and the air temperature in the room where the test will be conducted. For the purpose of this lab, that information can be found on the internet. Next, connect the vacuum cleaner to the appropriate inlet on the plenum.
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