Week 2

Why did we choose a water jet nozzle?

After much consideration and brainstorming, we have decided to choose an item under the household appliance category where it is included in daily life. Since we have aimed for something that can be used in daily life, we have thought of the convenience it will be able to bring. Hence, we have come out with a water jet nozzle where it is light, portable and easy to use.

It is a great alternative to the bulky, heavy and expensive pressure washer with the exact same function. To use, simply insert the nozzle onto a garden hose and you will have your very own cleaning appliance by your fingertips that you can use anywhere and anytime.

Planning stage for our chemical device

 

No.	Resource Type  Peer-reviewed journals, Internet search engines, books, etc.	Title  Article title, book title, etc.	Author(s)	Methodology  Experimental, non-experimental, survey, interview, qualitative, etc.	Currency of Research  State the year of publication	Main Research Question(s)	Major Finding(s)	Similarity  State any similarity in major findings observed among resources	Identified   Research Gap (if applicable)
1	Peer-reviewed journals	Investigation of the flow phenomena in high-pressure water jet nozzles	Oleg Urazmetov, Marcel Cadet, Roman Teutsch, Sergiy Antonyuk	Experimental	January 2021	How does the shape of the nozzle affect the flow as well as the wall shear stress?	Sharp nozzle edge results in high pressure while rounded nozzle edge results in lower pressure	NA	NA
2	Peer-reviewed journals	Experimental and numerical study of high-pressure water-mist nozzle sprays	H.M. Iqbal, Mahmud, Khalid A.M., Moinuddin, Graham R. Thorpe	Experimental	April 2016	How do the characteristics of sprays affect the distribution of flux density?	The distribution of the sprays produced in the experiment and numerical model for both the single and multi-orifice are elliptical in shape	NA	NA
3	Youtube Video	Steady-flow Engineering Devices - Nozzle	Zairul Shaffiq AB Rahim	Experimental	October 7 2017	How does diameter of nozzle affect pressure?	When diameter decreases across a nozzle, pressure decreases from high to low	Diameter affects flowrate and pressure	Why does pressure decrease as liquid flow through nozzle
4	Google	Flow Nozzle Principle	Instrumentaltools.com	Non-experimental	Before June 2018 (assuming from date of comments below)	What does the flow nozzle affect?	The flow nozzle causes a power drop that varies with the flow rate	NA	NA
5	Google	Pressure Washer Nozzles Explained	Kerrick	Expert	2017	How does nozzle tip affect pressure?	The higher the degree of the nozzle tip, the lower the pressure of the spray	Diameter affects flowrate and pressure	NA

 Reflection

For the second week of ICPD lessons, our group learnt how to evaluate research using the Meta-cognition model of thinking. This includes Analysis, Comparison and contrast, Inference and Interpretation, Generating Possibilities and Evaluation. 

• Analysis - To identify the main purpose of the research, identify the authors behind the research, determine how relevant the source is and the methodology of the source.
• Comparison and contrast - Taught us what are the similarities and differences among the different articles that we found.
• Inference and Interpretation - It helps us to separate between facts from opinions, make meaning of data and identify major findings 
  
• Generating Possibilities - It helps us to come up with as much ideas as possible
• Evaluation -  To decide what is to be evaluated as well as the importance of prioritization of the criteria

Additionally, we also learnt how to do a literature review. Literature review is about books or findings that will benefit the reader and address issues or concepts that he or she may pose. It's main goals are to supply a critical evaluation and ultimately, able to allow the reader to form a summary out of them. This is because it allows the reader to identify knowledge gaps by showing limitations and theories and different points of views.

The team also learnt that Singapore Polytechnic provides us with an array of online learning resources such as SP Library. It essentially holds thousands of articles or writings by expert and they are free of charge to use. The lecturer has also gave us a step-by-step guide on how to fully utilize SP Library. He also added that the team should clarify the doubts if there is any.

References

Oclc.org. (2021). [online] Available at: https://www-sciencedirect-com.sp.idm.oclc.org/science/article/pii/S0263876220305360.

‌Oclc.org. (2021). [online] Available at: https://www-sciencedirect-com.sp.idm.oclc.org/science/article/pii/S0379711216300169#s0105 [Accessed 5 May 2021].

‌www.youtube.com. (n.d.). STEADY FLOW ENGINEERING DEVICES - NOZZLE. [online] Available at: https://www.youtube.com/watch?v=c81UCtP2rh0 [Accessed 5 May 2021].

‌www.kerrick.com.au. (n.d.). Pressure Washer Nozzles Explained | Kerrick Industrial Equipment. [online] Available at: http://www.kerrick.com.au/about/hints-tips-and-faqs/pressure-washer-nozzles-explained.aspx [Accessed 5 May 2021].

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