Ethanol
Introduction/Preface
The implementation of the .net version of Greet required us to model the data in Greet excel. This includes the ETOH sheet of Greet excel. The ETOH data sheet contains many calculations that are not done in other portions of Greet. The purpose of this document is to summarize these differences, and explain our execution of this portion of our .net model in further detail.
For the most part the ETOH data is implemented in the same manner as all the other data. However, their are some topics that need clarification for users and scientists alike. The main points to focus on are feed & fuel, main input, yields, and co-products.
Feed & Fuel
In Greet excel their is a split in the data results between feed & fuel. Fuel refer to the fuel being fuel being produced. This is a final product such as Ethanol, Fisher Tropsh Diesel, Conventional Gasoline etc. The feed, or feed stock, refers to the main resource used to produce this fuel. For example for Ethanol it can be corn. In the case of Conventional Gasoline it will be crude. In Greet excel the results are split between these two categories. For example in ETOH they will show emission output and energy consumption for the corn used to make the Ethanol, and then in a separate column show the energy and emissions corresponding to Ethanol. Examples of feed and fuel in Greet excel are shown the right.