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Mechanical design of a whole house ventilation unit

Vandeursen, B. (2016) Mechanical design of a whole house ventilation unit.

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Abstract:This is the report of the three month internship at Heycop Systemen BV for my master phase of Me- chanical Engineering at the Twente University. The goal of the internship was to develop a whole house ventilation unit and have a prototype ready at the end of the internship. An extensive market research has been done in which competitors ventilation units have been thor- oughly analysed to try and �nd the best and weak spots of each. By doing this requirements and wishes could be set for the �nal design. With these requirements and wishes an competitive advantages should be gained. Test have been done to analyse the noise production, capacity and power consumption of each of the competitors. In these tests it was noted that a forward curved centrifugal fan was more quiet than a backward curved fan, while not being less e�cient. It was also found that PP seemed to dampen more noise than ABS. Other di�erences between competitors were mainly in shape and the number of air inlets (either 4 or 7). The most important aim for the �nal design was to make the box as cheap as possible. Other impor- tant aspects of the design were noise at high operating speed, being as small as possible, having more than 4 inlets and having an aesthetically pleasing design. All these requirements and wishes have been met. A large cost reduction has been achieved by �nding a cheap, but still decent, forward curved fan in China from which samples have been acquired and tested. The �nal design has been made with 7 inlets while being very small (competitors are 40% to 112% larger). The design has a nice and technical look as can be seen in �gure .1. A prototype of the �nal design has been produced using 3D printing. Combined with the sample fan this prototype has been tested and so far showed great promise. Cost analysis, including quotes from injection moulding companies and estimates for assembly in China and shipping etc., shows that the product can be produced well below the expected bottom price a customer is willing to pay for it. Thus it is concluded that the ventilation box is successfully designed. However at the moment of writing the development of the electronics for the product are not yet completed. At the end of the report recommendations are given for more testing of the prototype when the electronics are completed.
Item Type:Internship Report (Master)
Clients:
Heycop Smart Innovations BV, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Link to this item:http://purl.utwente.nl/essays/72038
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