{\displaystyle PV} Impact Factor: 3.971 ℹ Impact Factor: 2019: 3.971 The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. Joule的2019年影响因子 为 15.040 (2020年最新数据)。 2019-20年Joule的最新影响因子分区 为 1区 。 影响因子现已成为国际上通用的期刊评价指标，它不仅是一种测度期刊有用性和显示度的指标，而且也是测度期刊的学术水平，乃至论文质量的重要指标。影响因子是一个相对统计量。 At high temperature, V V P T So, the total work done on the mass m of gas is. Sign in to set up alerts. SJR acts as an alternative to the Journal Impact Factor (or an average number of citations received in last 2 years). In a Joule–Thomson expansion the enthalpy remains constant. The maximum inversion temperature (621 K for N2[10]) occurs as zero pressure is approached. American Journal of Case Reports h-index . {\displaystyle P} Million cubic feet. ISSN: 2228-5806. , defined by, and the third is the inverse of the isothermal Joule–Thomson coefficient, [1][2][3] This procedure is called a throttling process or Joule–Thomson process. in a Joule–Thomson process (that is, at constant enthalpy μ V Commonly used are the so-called T-s diagrams. T Journal Impact Factor List 2019. {\displaystyle Z} T {\displaystyle Z} It considers the number of citations received by a journal and the importance of the journals from where these citations come. For this reason, simple Linde cycle liquefiers, starting from ambient temperature, cannot be used to liquefy helium, hydrogen, or neon. is negative at high temperatures and positive at low temperatures. P Under such conditions, the Joule–Thomson coefficient is negative, as seen in the figure above. This journal has an h-index of 14. is always equal to zero: ideal gases neither warm nor cool upon being expanded at constant enthalpy. T , and its coefficient of thermal expansion [15] This is due to molecules being forced together, so that the volume can barely decrease due to higher pressure. However, the Joule–Thomson effect can be used to liquefy even helium, provided that the helium gas is first cooled below its inversion temperature of 40 K.[10], In thermodynamics so-called "specific" quantities are quantities per unit mass (kg) and are denoted by lower-case characters. During an impact, the energy of a moving object is converted into work, and force plays an important role. CZ: My advice would be to stay updated on Joule. Since this is true at all temperatures for ideal gases (see expansion in gases), the Joule–Thomson coefficient of an ideal gas is zero at all temperatures.[25]. with respect to pressure . American Journal of Case Reports is a journal covering the technologies/fields/categories related to Medicine (miscellaneous) (Q3). μ With that in mind, the following table explains when the Joule–Thomson effect cools or warms a real gas: Helium and hydrogen are two gases whose Joule–Thomson inversion temperatures at a pressure of one atmosphere are very low (e.g., about 45 K (−228 °C) for helium). Volume 7, Issue 1. pp. Journal Citation Reports (Clarivate Analytics, 2020) 5-Year Impact Factor: 4.730 ℹ Five-Year Impact Factor: 2019: 4.730 μ μ MJ. Also, modern determinations of It usually is associated with how much time was needed to deliver the energy. 45 It is also below cumulative impact if automakers make their self-proclaimed EV targets (e.g., Tesla is targeting 1 million EVs by 2020, VW is targeting 2–3 million EVs by 2025, etc.) {\displaystyle V} "Elements of Classical Thermodynamics", p. 73. Note that most conditions in the figure correspond to N2 being a supercritical fluid, where it has some properties of a gas and some of a liquid, but can not be really described as being either. {\displaystyle \mu _{\mathrm {JT} }} [26][27][28], Phenomenon of non-ideal fluids changing temperature while being forced through small spaces, Proof that the specific enthalpy remains constant, Derivation of the Joule–Thomson coefficient. Here is the equation for calculating kinetic energy (KE): KE = 1/2 * m * v 2 where m = mass and v = velocity. Visit the official website of the journal/conference for the call for paper, submission guidelines, notification date, and submission deadlines. A very convenient way to get a quantitative understanding of the throttling process is by using diagrams such as h-T diagrams, h-P diagrams, and others. JCR was earlier published as Science Citation Index, and now it is published by Clarivate Analytics, a Web of Science Group. Citescore is produced by Scopus, and can be a little higher or different compared to the impact factor produced by Journal Citation Report. In the table above are the additional citation-based metrics which provide a means to assess a journal, now updated with 2019 CiteScore metrics from Scopus and Journal Citation Reports metrics from … does change. ∂ The rate of change of temperature Throttling is a fundamentally irreversible process. The Journal Impact 2019 of Joule is 15.040, which is just updated in 2020. {\displaystyle U} It shows that the Joule–Thomson inversion temperature, at which U , the second is the constant pressure heat capacity, T Please be informed for the ff 1) Design Temp is -28 2) Test coupon is 12.7 mm, API 5L X60, 3) Gtaw impact test joule value for sub size specimen - ASME (mechanical) Code Issues - Eng-Tips Journal Impact Factor List 2020 ID Print-ISSN J. I. (1957). It is used for the recognition of journals, newspapers, periodicals, and magazines in all kind of forms, be it print-media or electronic. Throttling from 200 bar and an initial temperature of 133 K (point c in fig. Joule has developed very quickly in terms of both impact and impact factor. Pressure. J At temperatures below the gas-liquid coexistence curve, N2 condenses to form a liquid and the coefficient again becomes negative. do not use the original method used by Joule and Thomson, but instead measure a different, closely related quantity. Instead, keep a close eye on what has recently be published by Joule and the editor’s activities in China. Z SCImago Journal Rank is an indicator, which measures the scientific influence of journals. Joule - 影响因子. {\displaystyle Z} {\displaystyle \mu _{\mathrm {T} }} P {\displaystyle H} It is used in the following to obtain a mathematical expression for the Joule–Thomson coefficient in terms of the volumetric properties of a fluid. The first is The h-index is a way of measuring the productivity and citation impact of the publications. {\displaystyle PV} {\displaystyle H} It is easy to verify that for an ideal gas defined by suitable microscopic postulates that αT = 1, so the temperature change of such an ideal gas at a Joule–Thomson expansion is zero. [14] As a result, there is no change in internal energy; since there is also no change in thermal potential energy, there can be no change in thermal kinetic energy and, therefore, no change in temperature. Genshin Impact Wiki:AutoWikiBrowser/Typos. is internal energy, Skip to main content. The cooling produced in the Joule–Thomson expansion makes it a valuable tool in refrigeration. T {\displaystyle \mu _{\mathrm {JT} }} and Using the impact force calculator. For liquids, and for supercritical fluids under high pressure, 2) to 1 bar results in point d, which is in the two-phase region of nitrogen at a temperature of 77.2 K. Since the enthalpy is an extensive parameter the enthalpy in d (hd) is equal to the enthalpy in e (he) multiplied with the mass fraction of the liquid in d (xd) plus the enthalpy in f (hf) multiplied with the mass fraction of the gas in d (1 − xd). is zero, occurs when the coefficient of thermal expansion is equal to the inverse of the temperature. In region 2, the work done by the amount of gas on the rest of the gas is: W2 = m P2v2. T {\displaystyle \mu _{\mathrm {JT} }} 2853–3158 (5 November 2020) Volume 6, Issue 10. pp. represents the work done by the fluid (see the proof below). From there, calculating the force of an impact is relatively easy. is typically expressed in °C/bar (SI units: K/Pa) and depends on the type of gas and on the temperature and pressure of the gas before expansion. Joule also proved experimentally the relationship between mechanical and heat energy at this time. E.g. {\displaystyle \mu _{\mathrm {JT} }} The adiabatic (no heat exchanged) expansion of a gas may be carried out in a number of ways. According to SCImago Journal Rank (SJR), this journal is ranked 0.271. If The ratio of the value of increases as pressure increases. J [18][19] The effect is applied in the Linde technique as a standard process in the petrochemical industry, where the cooling effect is used to liquefy gases, and also in many cryogenic applications (e.g. IK07- Protected against 2 joules of impact (the equivalent to the impact of a 0.5kg mass dropped from 400mm above the impacted surface) IK08- Protected against 5 joules of impact (the equivalent to the impact of a 1.7kg mass dropped from 300mm above the impacted surface) , represents. V V Journal Citation Reports (Clarivate Analytics, 2020) 5-Year Impact Factor: 5.512 ℹ Five-Year Impact Factor: 2019: 5.512 Please refer to Web of Science data source for checking the exact journal impact factor ™ (Thomson Reuters) metric. Conversely, a decrease in Our latest impact factors can be found here. {\displaystyle \mu _{\mathrm {JT} }} is negative by definition. The way the units work is 1 Joule (J) of energy delivered = delivering 1 Watt (W) of energy for 1 second. I don’t encourage many trials and calibrating. Further details, including advice on disabling cookies, are available in our … 1–268 (14 January 2021) Volume 6, Issue 12. pp. A gas must be below its inversion temperature to be liquefied by the Linde cycle. μ To estimate the impacts of wind power, Keith and Miller established a baseline for the 2012‒2014 U.S. climate using a standard weather-forecasting model. Joule is a distinctive and forward-looking journal, bridging disciplines and scales of energy research. 3159–3454 (3 December 2020) Volume 6, Issue 11. pp. J does not change during a Joule–Thomson expansion. {\displaystyle \mu _{\mathrm {JT} }} {\displaystyle PV} P P Joule, a sister journal to Cell, is a home for outstanding and insightful research, analysis and ideas addressing a key global challenge: the need for more sustainable energy. {\displaystyle PV} Thus, helium and hydrogen warm when expanded at constant enthalpy at typical room temperatures. , its heat capacity at constant pressure No external work is extracted from the gas during the expansion (the gas must not be expanded through a turbine, for example). We would like to show you a description here but the site won’t allow us. It contains over 12000 Journals. T 2431–2852 (8 October 2020) View all issues. 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