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Thermal properties study and performance investigation of potassium formate solution in a falling film dehumidifier/regenerator.
No full textCompared with the extensive attention drawn by salt solutions, the promising potassium formate (KCOOH) solution which has smaller causticity and lower price receives little attention in the field of liquid desiccant cooling system (LDCS). Consequently, the present paper studied both the thermal properties and mass transfer performance of KCOOH solution for its practical engineering application. The vapor pressure and density of KCOOH solution under different concentrations and temperatures were measured and then fitted in the form of polynomials with the mean absolute relative deviation (MARD) of 0.06% and 0.551% respectively. Referring to the data in the existing literature, the heat capacity of KCOOH solution was also fitted with the MARD of 0.15%. Mathematical models of dehumidification/regeneration with the film shrinkage on the plate dehumidifier/regenerator were developed and validated by the experimental data. Results showed that the wetting ratio predicted by the model matched well with the measured one with the relative difference of 3.4%. Besides, the dehumidification/regeneration performance obtained by the model in terms of absolute moisture change was also in line with the experimental ones with the MARD of 6.05%/4.2%. In summary, the correlations of KCOOH solution thermal properties, mathematical model, and experimental results were valuable for the engineering application of KCOOH solution in LDCS
Flexible integration of liquid air energy storage with liquefied natural gas regasification for power generation enhancement
No full textLiquid Air Energy Storage (LAES) is one of the most promising energy storage technologies for achieving low carbon emissions. Our research shows that the LAES produces a considerable amount of excess heat that cannot be cost-effectively utilised in a standalone LAES system. On the other hand, the regasification of liquefied natural gas (LNG) often leads to waste of a large amount of high-grade cold energy. Therefore, this paper proposes the integration of the LAES with the LNG regasification process via a Brayton cycle (denoted as LAES-Brayton-LNG), where pressurized propane is used as both the heat transfer fluid and storage material for the LNG cold energy. The excess heat from the LAES works as the heat source and the waste cold from the LNG regasification as the cold source for the Brayton cycle. Such an integrated LAES-Brayton-LNG system does not need to change the existing LAES system configuration, and the LNG regasification process is independent of the LAES system, thus allowing operation flexibilities. Our analyses show that the flexibly integrated LAES-Brayton-LNG system achieves a system exergy efficiency of 57% and could improve the system exergy efficiency of the standalone LAES system by 14.4%. What’s more, it has an electrical round trip efficiency of ∼70.6%, which is ∼56.5% higher than that of the standalone LAES system. Hence, the proposed LAES-Brayton-LNG system is comparable with other large scale energy storage technologies in terms of the electrical round trip efficiency
Bookshelf 新書上架
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大師巨著
The hottest new cookbooks, gastronomic guides and beverage bibles
最新出版的烹飪書、美食指南與葡萄酒聖
1 Ingredient 10 Ways 一種食材 十種味道
Get PDFSpilling the soybeans
豆香四溢
A versatile, protein-rich legume, native to East Asia, the uses of soybeans range from cooking oil, soy milk and tofu to fermented foodstuffs such as soy sauce, tempeh, natto and miso.
大豆含豐富蛋白質，原產於東亞，用途廣泛，從食用油、豆漿和豆腐，到醬油、天貝、納豆和味噌等發酵食品，都是由大豆製
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吃醋
Acid can brighten and enliven a dish. With the wide range of vinegars available, each with its own personality, there are many ways to perk up your plates
以醋入饌，其酸味可令菜式味道清爽提神。市面上有林林總總的醋，酸味濃淡不一，各有特色，可為菜餚增添不同風
Day in the Life 餐飲人生
Get PDFAngela Ling 凌頴芬
Graduate of ICI\u27s Bakery Course and Pastry Chef at Supreme-Pacific Confectionery Limited
國際廚藝學院西式包餅課程畢業生，現為卓越太平洋糖果有限公司的餅
THEi Student Applied Research Symposium Poster Presentation
No full textDisplay and presentation of a selection of THEi students of their final year industry-focused applied research projects
