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混合冷剂液化天然气流程的混合制冷剂研究 被引量:4
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作者 杨国通 都荣彬 +2 位作者 高俊 魏志会 石利星 《石油化工应用》 CAS 2016年第2期104-106,114,共4页
混合冷剂液化天然气流程具有低能耗的优点。其中,混合制冷剂组成及配比直接影响液化流程能耗。以混合冷剂液化流程中混合制冷剂的制冷温区和能耗较低为目的选择混合制冷剂组成,并以比功耗最小为目标函数确定混合制冷剂最佳配比。同时,... 混合冷剂液化天然气流程具有低能耗的优点。其中,混合制冷剂组成及配比直接影响液化流程能耗。以混合冷剂液化流程中混合制冷剂的制冷温区和能耗较低为目的选择混合制冷剂组成,并以比功耗最小为目标函数确定混合制冷剂最佳配比。同时,研究了原料气甲烷含量和压力对混合制冷剂的影响得出:原料气中CH4含量决定低温冷剂的含量,从而影响混合制冷剂最佳配比。 展开更多
关键词 混合制 液化 组成 配比优化 低温冷剂
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干冰型低温冰袋在运送生物检材中的应用
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作者 林刚 《刑事技术》 2009年第3期17-17,共1页
关键词 生物检材 低温 检材保存
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淬火油复合添加剂
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《化工科技市场》 CAS 2002年第12期70-70,共1页
关键词 淬火油 复合添加 中国石油天然气股份有限公司大连石化分公司 发明 油淬火 热油淬火 高温催 烷基萘 低温 石油黄酸盐 光亮
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An approach for IC engine coolant energy recovery based on low-temperature organic Rankine cycle 被引量:1
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作者 付建勤 刘敬平 +2 位作者 徐政欣 邓帮林 刘琦 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第2期727-734,共8页
To promote the fuel utilization efficiency of IC engine, an approach was proposed for IC engine coolant energy recovery based on low-temperature organic Rankine cycle(ORC). The ORC system uses IC engine coolant as hea... To promote the fuel utilization efficiency of IC engine, an approach was proposed for IC engine coolant energy recovery based on low-temperature organic Rankine cycle(ORC). The ORC system uses IC engine coolant as heat source, and it is coupled to the IC engine cooling system. After various kinds of organic working media were compared, R124 was selected as the ORC working medium. According to IC engine operating conditions and coolant energy characteristics, the major parameters of ORC system were preliminary designed. Then, the effects of various parameters on cycle performance and recovery potential of coolant energy were analyzed via cycle process calculation. The results indicate that cycle efficiency is mainly influenced by the working pressure of ORC, while the maximum working pressure is limited by IC engine coolant temperature. At the same working pressure, cycle efficiency is hardly affected by both the mass flow rate and temperature of working medium. When the bottom cycle working pressure arrives at the maximum allowable value of 1.6 MPa, the fuel utilization efficiency of IC engine could be improved by 12.1%.All these demonstrate that this low-temperature ORC is a useful energy-saving technology for IC engine. 展开更多
关键词 IC engine waste heat recovery organic Rankine cycle cycle efficiency coolant energy
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Cryopreservation of Veliger Larvae of Trumpet Shell, Charonia sauliae: an Essential Preparation to Artificial Propagation 被引量:1
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作者 KANG Kyoung Ho ZHANG Zhifeng +1 位作者 BAO Zhenmin SHAO Mingyu 《Journal of Ocean University of China》 SCIE CAS 2009年第3期265-269,共5页
Trumpet shell, Charonia sauliae, is an endangered and valuable species, but its artificial propagation protocol has not been successfully established. To estimate the possibility of cryopreservation for larvae of C. s... Trumpet shell, Charonia sauliae, is an endangered and valuable species, but its artificial propagation protocol has not been successfully established. To estimate the possibility of cryopreservation for larvae of C. sauliae, which is a potential preparation for its artificial reproduction and further research, in this study a protocoi for the cryopreservation of veliger larvae of trumpet shell was optimized. Through a two-step cryopreservation procedure, four kinds of cryoprotectants (ethylene glycol, 1, 2-propanediol, dimethyl sulfoxide and glycerol) were employed at three concentrations (1.0, 1.5 and 2.0molL^-1) respectively and survival rates of larvae were determined after a storage of lh. The larvae frozen with these four cryoprotectants after 1 h storage were cultured, and then survival rates were determined at 24, 72 and 120 h after thawing. Dimethyl sulfoxide at a concentration of 1.5 molL^-1 showed the best protective effect in all experiments (p〈0.05). And survival rates of larvae frozen with dimethyl sulfoxide were determined after 1, 7 and 15 d of storage. The survival rates of larvae frozen with 1.5 molL^-1 dimethyl sulfoxide after 1 h, 1 d, 7 d and 15 d of storage were 80.77% ±7.51%, 80.34%±11.28%, 83.10%±9.14% and 77.23%±6.22% respectively. No significant differences in survival rates of larvae frozen with dimethyl sulfoxide were observed after various storage periods (p〉0.05). 展开更多
关键词 trumpet shell Charonia sauliae veliger larva CRYOPRESERVATION
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