为提高有机朗肯循环(Organic Rankine Cycle, ORC)在中低温地热収电领域的效率,本文以R1234yf为工质,依据热力学第一定律与第二定律分析了系统单位质量热水净収电功率和系统?效率,幵与目前应用广泛的R245fa工质进行了性能对比.研究结果表明,存在最佳蒸収温度和最佳冷凝温度,使得ORC収电系统单位质量热水净収电功率,?效...
r1234yf是一种新型的制冷剂,被广泛应用于汽车空调系统中。了解r1234yf的等熵指数对于理解其在空调中的性能表现及优劣具有重要意义。 等熵过程简介 等熵过程是指在某个系统中,物质在过程中的熵保持不变。在理想条件下,等熵过程也被称为绝热过程。等熵过程发生时,系统内部对外界的热交换不会改变系统的熵,因为熵...
G Enzmann,C Mysiorek,R Gorina,... - 《Acta Neuropathologica》 被引量: 176发表: 2013年 Prostaglandin E2 EP2 Receptor Deletion Attenuates Intracerebral Hemorrhage-Induced Brain Injury and Improves Functional Recovery Intracerebral hemorrhage (ICH) is a devastating type of stroke characterized by bleed...
PURPOSE: To provide gripping force capable of easily practicing and automatically holding a reference element by gripping a first surface of an object with one set of gripping means sets, approaching the other set of the gripping means sets to other surface of the object, sufficiently gripping the...