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Reassessment on the application of the embossed plate heat exchanger to adsorption chiller
홍상우,X. Q. Duong,정재동,권오경 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.3
In the authors’ previous work, an embossed plate heat exchanger was proposed to the adsorption bed and results showed that the plate heat exchanger adsorption chiller had a lower Coefficient of performance (COP) but higher Specific cooling power (SCP) than those of a fin-tube type adsorption chiller, which shows high potential to resolve one of the most serious disadvantages of the adsorption cooling system, i.e., system size. However, only one section of the repeating embossed pitch plate was used and a uniform inlet flow condition was applied, which might have caused a distortion in estimated performance. We have reassessed the embossed plate heat exchanger adsorption bed by including the end effect to examine the real benefit of the proposed heat exchanger. The result showed that SCP was not significantly changed, while a 66.4 % increase in COP was observed. The proposed embossed plate heat exchanger adsorption bed is expected to provide advantages in both COP and SCP compared to a fin-tube type adsorption bed.
Effects of Trang Phuc Linh Plus-Food Supplement on Irritable Bowel Syndrome Induced by Mustard Oil
Thong T. Nguyen,Duong T. Dau,Dung C. Nguyen,Huong T.T.G. Nguyen,Phuong T.B. Ngo,Thai Q. Nguyen,Bo Han,Ba X. Hoang 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.4
Trang phuc linh plus (TPLP) is a food supplement product derived from dried extracts of herbal agents Atractylodes macrocephala, Poria cocos, Paeonia lactiflora, Phellodendron amurense, and added lactobacillus fermentum lysate (ImmuneGamma®) and 5-hydroxytryptophan. TPLP is a functional food used as adjunctive treatment for treating irritable bowel syndrome (IBS). However the biological effect and its mechanism of action in IBS have not been elucidated. In this study, we aimed to determine the pharmacological activities and mode of action of TPLP on IBS animal models. Mice were given a single administration of 5% mustard oil (MO) intracollonically. Acute colitis induction by MO resulted in later development of an IBS-like accelerated upper gastrointestinal transit in mice. Mice were treated with different does of TPLP and controls. Results showed that TPLP at the dose of 654 mg/kg/day given orally significantly decreased intestinal motility (IM) compared with the control animals. The effect was similar to Duspatalin (80 mg/kg/day) (Mebeverine Hydrochloride, an antispasmodic that helps to relieve the pain and discomfort associated with gastrointestinal spasms). Increased TPLP dose (1962 mg/kg/day) had a better effect on relief of IM than Duspatalin (80 mg/kg/day). TPLP also reduced peristalsis frequency and decreased fluid volume and electrolytes excretion in intestine tested in ex vivo models. Overall, TPLP may be an effective nutraceutical supplement for IBS.