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Ji Y.-P.,Xian Modern Chemistry Research Institute | Gao F.-L.,Xian Modern Chemistry Research Institute | Han R.,China Wuzhou Engineering Corporation LTD | Chen B.,Xian Modern Chemistry Research Institute | And 4 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2013

The solubility parameter of 1, 5-diazido-3-nitrazapentane(DIANP)was estimated by group contribution method and determined by turbidity titration method. The solubility of DIANP in different solvents was studied. Results show that the estimated values are in accordance with the determined ones. The solubility parameter of DIANP is determined as 22.29 (J/mL)1/2.The solubility of DIANP in different solvents follows the "better miscibility with similar solubility parameter" principle.

Guo S.,Nanjing University of Science and Technology | Yin J.,China Wuzhou Engineering Corporation LTD | Peng M.,Nanjing University of Science and Technology | Wan W.,Nanjing University of Science and Technology | And 2 more authors.
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | Year: 2013

Thermal decomposition behaviors of crude oil and its mixtures with two kinds of typical desulfurization agents, named as TS02 and JH02, were studied by C80 micro-calorimetry. Based on the acquired data, reaction kinetic parameters such as activation energy, pre-exponential factor, etc, were calculated, respectively, and then the influences of two desulfurization agents on thermal decomposition of crude oil were analyzed and compared. The results showed that the initial decomposition temperature and the decomposition activation energy of the crude oil were reduced by mixing crude oil with desulfurization agent, at the same time, the heat of decomposition reaction increased and the self-accelerating decomposition temperature (SADT) decreased. Thermal hazard caused by the mixture of crude oil with desulfurization agent was far higher than that by pure crude oil. The JH02 had much more influence on crude oil desulfurization process than TS02.

Zhang S.-D.,Tongji University | Huang C.-H.,Tongji University | Liu J.,China Wuzhou Engineering Corporation LTD
Jianzhu Cailiao Xuebao/Journal of Building Materials | Year: 2013

To study the fire resistance performance of timber, 20 Chinese larch specimens exposed to fire were tested, half of which were painted with fire retardant agent and another half were not treated. The thicknesses of charring layers after different burning duration were measured and charring rates were obtained by linear regression method. Then the parallel-to-grain compression tests were conducted with the fired specimens. The results show that the strength of timber parallel to grain decrease after fire, and a linear expression can be used to describe the bearing capacities of remaining sections versus burning duration. The test results also show that the fire retardant agent by the brushing method used in the research can retard charring rate at the early stage, but it is almost useless to rescue the strength loss.

Li X.-W.,Nanjing Southeast University | Li X.-W.,Nanjing University of Science and Technology | Zhang X.-S.,Nanjing Southeast University | Quan S.,China Wuzhou Engineering Corporation LTD
Applied Energy | Year: 2011

Liquid desiccant cooling system (LDCS) is a novel air-conditioning system with good energy saving potential. However, the present LDCS has a poor performance, mainly because the conventional thermal regeneration method wastes too much energy during the regeneration process. To improve that, photovoltaic-electrodialysis (PV-ED) regeneration method is introduced: it has a higher performance by using solar photovoltaic panels to drive an electrodialysis regeneration process. To further explore the PV-ED method, both single-stage and double-stage photovoltaic-electrodialysis regeneration systems are presented in this paper. Analysis is made on these two systems and some influential factors are investigated. It reveals that the concentration difference between the desiccant solution before and after regeneration has a strong impact on system performance. Moreover, comparison is conducted between the single-stage and the double-stage systems, the results show that the double-stage system is more energy-efficient and it can save more than 50% energy under optimized working conditions. © 2011 Elsevier Ltd.

Li X.-W.,Nanjing University of Science and Technology | Li X.-W.,Nanjing Southeast University | Zhang X.-S.,Nanjing Southeast University | Cao R.-Q.,Nanjing Southeast University | Quan S.,China Wuzhou Engineering Corporation LTD
Energy and Buildings | Year: 2012

Liquid desiccant cooling system (LDCS) is an alternative air-conditioning system with good energy-saving potential. Dehumidification performance is the key part of LDCS; while desiccant variety and dehumidifier influence the dehumidification performance. However, few works have been done about how to select cost-effective liquid desiccant and good performance dehumidifier. To improve, we proposed a new method for selecting a cost-effective mixed desiccant group: it combines the non-random two-liquid equation (NRTL equation) with the desiccant cost to get the mathematical form of the cost-effectiveness. Meanwhile, through the comparison experiments among different dehumidifiers, we have found out some helpful tips for dehumidifier design: it achieves better effect with rougher surface and adsorption absorption complex plan. These progresses increase the dehumidification performance by more than 50% and could make LDCS more competitive in the future market. © 2012 Elsevier B.V. All rights reserved.

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