Study on heat transfer and flow characteristics of ice slurry in a small pipe
Tokyo Institute of Technology
Mechanical Sciences and Engineering Department
Graduate School of Science and Engineering
Okawa Labortary
11M10510 KYAW MYO OO
Abstract
In this study, the results of studies on heat transfer and flow characteristics of ice slurry were experimentally investigated by using a horizontal, stainless steel tube, 0.8 m long and 10.2 mm internal diameter. The technical utilization of ice slurry –
a mixture of small (typically 0.5 to 1.7 mm in diameter) ice particles and a carrier fluid - a mixture of water and ethanol 5 wt.% – allows the phase change material, “ice”, to be pumped to the testing section. Most aqueous solutions used as single-phase secondary fluids can also be used as ice slurry. In this study, the ice slurry velocity of the experiments was varied from 0.5 to 4.7 m/s which encompassed the laminar and turbulent flow range. Two types of ice slurries containing different sizes of ice particles were generated by the scraped-surface type ice slurry generator.
The values of parameter (ice packing factor IPF, Reynolds number and ice particle size) corresponding to the laminar, transition and turbulent flow were determined. For the laminar flow, it was found that the pressure drop and heat transfer coefficient of the ice slurry mainly depend on ice particle size and ice packing factor. The rate of pressure drop is linearly increased in the results of the small ice particle size. On the other hand, in case of turbulent flow condition, the ice particle size is not influenced on the pressure drop and heat transfer rate. The heat transfer coefficients are almost constant in different IPF region. It is seen that a thermal boundary layer rapidly develops under turbulent flow regime. The values of Nusselt number increase with IPF increasing in the case of laminar flow. For the turbulent flow, there is no change condition.
One of the characteristics of ice slurries is that the particles disappear in the melting process and it is not possible to use in constant flow. On the other hand, the heat transfer characteristics of ice slurry during production are important for the experiment. The effect of the time behavior of ice particle size on the heat transfer properties should be quantified.
How do we make the most out of a QBR that can define the tone of your customer relationships for the next 3 months? The key: delivering on what you have promised & demonstrate key value takeaways.
Intervención en el I Seminario de Comunicación Política de Alicante (18 abril 2013)
http://www.gutierrez-rubi.es/2013/03/29/zw-342-i-seminario-de-comunicacion-politica-de-alicante/
Study on heat transfer and flow characteristics of ice slurry in a small pipe
Tokyo Institute of Technology
Mechanical Sciences and Engineering Department
Graduate School of Science and Engineering
Okawa Labortary
11M10510 KYAW MYO OO
Abstract
In this study, the results of studies on heat transfer and flow characteristics of ice slurry were experimentally investigated by using a horizontal, stainless steel tube, 0.8 m long and 10.2 mm internal diameter. The technical utilization of ice slurry –
a mixture of small (typically 0.5 to 1.7 mm in diameter) ice particles and a carrier fluid - a mixture of water and ethanol 5 wt.% – allows the phase change material, “ice”, to be pumped to the testing section. Most aqueous solutions used as single-phase secondary fluids can also be used as ice slurry. In this study, the ice slurry velocity of the experiments was varied from 0.5 to 4.7 m/s which encompassed the laminar and turbulent flow range. Two types of ice slurries containing different sizes of ice particles were generated by the scraped-surface type ice slurry generator.
The values of parameter (ice packing factor IPF, Reynolds number and ice particle size) corresponding to the laminar, transition and turbulent flow were determined. For the laminar flow, it was found that the pressure drop and heat transfer coefficient of the ice slurry mainly depend on ice particle size and ice packing factor. The rate of pressure drop is linearly increased in the results of the small ice particle size. On the other hand, in case of turbulent flow condition, the ice particle size is not influenced on the pressure drop and heat transfer rate. The heat transfer coefficients are almost constant in different IPF region. It is seen that a thermal boundary layer rapidly develops under turbulent flow regime. The values of Nusselt number increase with IPF increasing in the case of laminar flow. For the turbulent flow, there is no change condition.
One of the characteristics of ice slurries is that the particles disappear in the melting process and it is not possible to use in constant flow. On the other hand, the heat transfer characteristics of ice slurry during production are important for the experiment. The effect of the time behavior of ice particle size on the heat transfer properties should be quantified.
How do we make the most out of a QBR that can define the tone of your customer relationships for the next 3 months? The key: delivering on what you have promised & demonstrate key value takeaways.
Intervención en el I Seminario de Comunicación Política de Alicante (18 abril 2013)
http://www.gutierrez-rubi.es/2013/03/29/zw-342-i-seminario-de-comunicacion-politica-de-alicante/
Lesson 9 - Resisting Temptation Along the Way.pptxCelso Napoleon
Lesson 9 - Resisting Temptation Along the Way
SBs – Sunday Bible School
Adult Bible Lessons 2nd quarter 2024 CPAD
MAGAZINE: THE CAREER THAT IS PROPOSED TO US: The Path of Salvation, Holiness and Perseverance to Reach Heaven
Commentator: Pastor Osiel Gomes
Presentation: Missionary Celso Napoleon
Renewed in Grace
The Book of Joshua is the sixth book in the Hebrew Bible and the Old Testament, and is the first book of the Deuteronomistic history, the story of Israel from the conquest of Canaan to the Babylonian exile.
The Chakra System in our body - A Portal to Interdimensional Consciousness.pptxBharat Technology
each chakra is studied in greater detail, several steps have been included to
strengthen your personal intention to open each chakra more fully. These are designed
to draw forth the highest benefit for your spiritual growth.
In Jude 17-23 Jude shifts from piling up examples of false teachers from the Old Testament to a series of practical exhortations that flow from apostolic instruction. He preserves for us what may well have been part of the apostolic catechism for the first generation of Christ-followers. In these instructions Jude exhorts the believer to deal with 3 different groups of people: scoffers who are "devoid of the Spirit", believers who have come under the influence of scoffers and believers who are so entrenched in false teaching that they need rescue and pose some real spiritual risk for the rescuer. In all of this Jude emphasizes Jesus' call to rescue straying sheep, leaving the 99 safely behind and pursuing the 1.
Why is this So? ~ Do Seek to KNOW (English & Chinese).pptxOH TEIK BIN
A PowerPoint Presentation based on the Dhamma teaching of Kamma-Vipaka (Intentional Actions-Ripening Effects).
A Presentation for developing morality, concentration and wisdom and to spur us to practice the Dhamma diligently.
The texts are in English and Chinese.
Exploring the Mindfulness Understanding Its Benefits.pptxMartaLoveguard
Slide 1: Title: Exploring the Mindfulness: Understanding Its Benefits
Slide 2: Introduction to Mindfulness
Mindfulness, defined as the conscious, non-judgmental observation of the present moment, has deep roots in Buddhist meditation practice but has gained significant popularity in the Western world in recent years. In today's society, filled with distractions and constant stimuli, mindfulness offers a valuable tool for regaining inner peace and reconnecting with our true selves. By cultivating mindfulness, we can develop a heightened awareness of our thoughts, feelings, and surroundings, leading to a greater sense of clarity and presence in our daily lives.
Slide 3: Benefits of Mindfulness for Mental Well-being
Practicing mindfulness can help reduce stress and anxiety levels, improving overall quality of life.
Mindfulness increases awareness of our emotions and teaches us to manage them better, leading to improved mood.
Regular mindfulness practice can improve our ability to concentrate and focus our attention on the present moment.
Slide 4: Benefits of Mindfulness for Physical Health
Research has shown that practicing mindfulness can contribute to lowering blood pressure, which is beneficial for heart health.
Regular meditation and mindfulness practice can strengthen the immune system, aiding the body in fighting infections.
Mindfulness may help reduce the risk of chronic diseases such as type 2 diabetes and obesity by reducing stress and improving overall lifestyle habits.
Slide 5: Impact of Mindfulness on Relationships
Mindfulness can help us better understand others and improve communication, leading to healthier relationships.
By focusing on the present moment and being fully attentive, mindfulness helps build stronger and more authentic connections with others.
Mindfulness teaches us how to be present for others in difficult times, leading to increased compassion and understanding.
Slide 6: Mindfulness Techniques and Practices
Focusing on the breath and mindful breathing can be a simple way to enter a state of mindfulness.
Body scan meditation involves focusing on different parts of the body, paying attention to any sensations and feelings.
Practicing mindful walking and eating involves consciously focusing on each step or bite, with full attention to sensory experiences.
Slide 7: Incorporating Mindfulness into Daily Life
You can practice mindfulness in everyday activities such as washing dishes or taking a walk in the park.
Adding mindfulness practice to daily routines can help increase awareness and presence.
Mindfulness helps us become more aware of our needs and better manage our time, leading to balance and harmony in life.
Slide 8: Summary: Embracing Mindfulness for Full Living
Mindfulness can bring numerous benefits for physical and mental health.
Regular mindfulness practice can help achieve a fuller and more satisfying life.
Mindfulness has the power to change our perspective and way of perceiving the world, leading to deeper se
HANUMAN STORIES: TIMELESS TEACHINGS FOR TODAY’S WORLDLearnyoga
Hanuman Stories: Timeless Teachings for Today’s World" delves into the inspiring tales of Hanuman, highlighting lessons of devotion, strength, and selfless service that resonate in modern life. These stories illustrate how Hanuman's unwavering faith and courage can guide us through challenges and foster resilience. Through these timeless narratives, readers can find profound wisdom to apply in their daily lives.
What Should be the Christian View of Anime?Joe Muraguri
We will learn what Anime is and see what a Christian should consider before watching anime movies? We will also learn a little bit of Shintoism religion and hentai (the craze of internet pornography today).
The PBHP DYC ~ Reflections on The Dhamma (English).pptxOH TEIK BIN
A PowerPoint Presentation based on the Dhamma Reflections for the PBHP DYC for the years 1993 – 2012. To motivate and inspire DYC members to keep on practicing the Dhamma and to do the meritorious deed of Dhammaduta work.
The texts are in English.
For the Video with audio narration, comments and texts in English, please check out the Link:
https://www.youtube.com/watch?v=zF2g_43NEa0
The Good News, newsletter for June 2024 is hereNoHo FUMC
Our monthly newsletter is available to read online. We hope you will join us each Sunday in person for our worship service. Make sure to subscribe and follow us on YouTube and social media.
2 Peter 3: Because some scriptures are hard to understand and some will force them to say things God never intended, Peter warns us to take care.
https://youtu.be/nV4kGHFsEHw