22,323 research outputs found
Free-convection condensation on single horizontal pin-fin tubes
No full textPhDNew experimental data are reported for free-convection condensation of ethylene
glycol and R-113 on three-dimensional pin-fin tubes. Effects of pin geometry and tube
thermal conductivity (for copper, brass and bronze giving a mean range of 400, 120 and
80 W/m K over the range of temperature of interest) were investigated. All tests were
performed at near atmospheric pressure with downward flowing vapour at low velocity.
Heat-transfer enhancement was found to be approximately twice the corresponding
active surface area of the tubes, i.e. the surface area of the parts of the tube and pin
surface not covered by condensate retained by surface tension. For ethylene glycol, the
best performing pin-fin tube gave a heat-transfer enhancement of 5.8, about 24 %
higher than the ‘equivalent’ two-dimensional integral-fin tube (i.e. with the same finroot
diameter, longitudinal fin spacing and thickness and fin height). For R-113, the
best enhancement was 5.9, about 10 % higher than the equivalent integral-fin tube.
For both fluids tested, vapour-side, heat-transfer enhancement was found to increase
with decreasing circumferential pin spacing and increasing pin height. Circumferential
pin thickness had little effect on heat-transfer enhancement. Effects of tube thermal
conductivity were found to be more significant for ethylene glycol than R-113.
Retention angle measurements were made under static conditions (without
condensation) and were found to be larger than for equivalent integral-fin tubes. An
expression for condensate retention angle on pin-fin tubes was proposed and found to
agree with the measured retention angles to ±15%.
A semi-empirical model for condensation heat transfer on horizontal pin-fin tubes has
been developed which accounts for the combined effect of gravity and surface tension.
The model predicts the majority of available data to ±20 %
Poetry Reading: Sun Yung Shin
No full textJoin us for a poetry reading by Minnesota Book Award winner Sun Yung Shin and discussion on what sanctuary means for the Twin Cities.
The event is co-sponsored with the St. Thomas English Department.
Sun Yung Shin is the editor of A Good Time for the Truth: Race in Minnesota and the author of two previous poetry/essay collections—Rough, and Savageand Skirt Full of Black (both from Coffee House Press). She is also the co-editor of Outsiders Within: Writing on Transracial Adoption, and the author of bilingual illustrated book for children Cooper’s Lesson. She has received artist grants from the Bush Foundation, the Minnesota State Arts Board, the McKnight Foundation, and the Jerome Foundation. She is teaching or has taught at St. Catherine University, Hamline University, Macalester College, the University of Minnesota, the Perpich Center for Arts Education, Intermedia Arts, Minneapolis public schools, and the Loft Literary Center
Wea Lee oral history interview recording and transcript
No full textThis recording forms part of a collection of oral history interviews conducted by the Chao Center for Asian Studies at Rice University. This collection includes audio recordings and transcripts of interviews with Asian Americans native to Houston.Wea Lee, interviewed by Pin-Fang Wang and Yuanzhuo Wang, July 2 & 3, 2010, in Houston, Texas
Fan Studies Pedagogies
No full textEditorial to "Fan Studies Pedagogies," edited by Paul Booth and Regina Yung Lee, special issue, Transformative Works and Cultures, no. 35 (March 15, 2021)
Crisis management: a case study of a private independent school in Hong Kong.
Full text linkby Lee Yung-wong.Thesis (M.B.A.)--Chinese University of Hong Kong, 1980.Bibliography: leaves 268-272
Sun Yung Shin Reading & Conversation
No full textSun Yung Shin was born in Seoul, Korea and was raised in the Chicago area. She is a poet, writer, and cultural worker. She is the editor of What We Hunger For: Refugee and Immigrant Stories on Food and Family (2021) and of A Good Time for the Truth: Race in Minnesota, author of poetry collections The Wet Hex; Unbearable Splendor (finalist for the 2017 PEN USA Literary Award for Poetry, winner of the 2016 Minnesota Book Award for poetry); Rough, and Savage; and Skirt Full of Black (winner of the 2007 Asian American Literary Award for poetry), co-editor of Outsiders Within: Writing on Transracial Adoption, and author of bilingual illustrated book for children Cooper’s Lesson. She lives in Minneapolis where she co-directs the community organization Poetry Asylum with poet Su Hwang
A Family Therapy Trailblazer in Asia and Beyond: An Interview with Dr. Wai-Yung Lee
No full textIn March 2024, in preparation for this special issue on Family Therapy in Asia, I interviewed Dr. Wai-Yung Lee, who is a world-renowned family therapist based in Hong Kong. I used a semi-structured interview to chart her journey in family therapy. This article is the transcript of that interview
The Impact the Price Promotion Has on the Manufacturer\u27s Performance
No full textWenting Pan, Business Analytics; Yung-Jae Lee, Marketing; Xiaotian Tina Zhang, Financ
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