摘要: |
This is the Final Report for Project CRC-AV-20-14 “Determination of Heat of Vaporization and Creating Enthalpy Diagrams for Several Common Jet Fuels”. Heat of vaporization (HOV) is not provided for Jet A or Jet A-1 in Figure 2-19 in the current CRC Aviation Fuel Properties Handbook (the Handbook) [1]. There are no Enthalpy Diagrams for these two commercial fuels which are the main-stay of Civil Aviation. This is because the original data were generated in an era when military fuels were the focus of the Council. Enthalpy diagrams are used for determining the state of the fuel in the design of fuel systems for, and performance of, gas turbine augmenter or afterburner designs and their operability calculations, and in design and performance considerations of fuel systems where fuel will be used as a heat transfer medium. Different types of fuel injectors in engine main combustors and auxiliary power sources generate many different spray droplet sizes and in several different environments, and these design curves help to determine vapor generation for ignition analysis. These curves provide a source of information when trying to understand what has happened in an aircraft accident and aftermath or a fuel spill and fire investigation. HOV is also used in the study of events where fuel vapor production is an important part of an analysis preceding fire initiation, such as in an observed tailpipe fire. The high-pressure differential scanning calorimeter (HPDSC) is very well suited to the measurement of heat of vaporization (HOV) of these fuels at atmospheric pressure and the production of enthalpy curves, at various pressures, used for the construction of master enthalpy diagrams. This report includes the HOV values for: Jet A, Jet A-1, JP-5, JP-8, JP-TS, FT-SPK, TS-1 and JP-4, as well as a few biojet fuels and blended jet fuels. This report also includes the Enthalpy Diagrams for: JP-8, JP-5, Jet A, JP-8, TS-1 and JP-4. |