Life Cycle Analysis of Distributed Energy System Projects’ Energy Consumption and GHG Emission – A Case of Beer Brewery Auxiliary Power Supply in China 
The article uses the life cycle analysis for the assessment of energy consumption and greenhouse gas emissions made in China Resources Snow Breweries.

It is important to define the criteria of a LCA of a product, for which the scope should be clear in the product to be studied, the functions of the product system, units, limits and limitations, the evaluation of the impact of the life cycle (EICV ), the requirements, limitations, assumptions, value judgments, etc.

The relationship of the objectives and the scope of the LCA must go hand in hand with the identification of significant issues (Energy, impacts, contributions to the stages of the cycle), the evaluation is important since it determines the coherence, integrity and sensitivity of the study, once the result is obtained, the expected conclusions of the study should be drawn.

Therefore, the ACV report must include the data, methods, results, assumptions and limitations, all of which can be easily understood.

In the article, when performing the life cycle analysis for the Energy Distribution, Energy Consumption and GHG Emission Project, the results were the following, in summary: Gas is one of the best performers and its% of GHG emission in its life cycle (greenhouse gas) is better compared to the most used option in the company that is the Carbon-electric energy (Case 2), also the alternatives of Biomass and wind energy vs Case 2 is good yields and percentages of GHG emission in their life cycle.

To corroborate a sensitivity analysis was carried out where it is demonstrated in the efficiency of the boiler that the gas gives a yield of 60% compared to feeding with coal (case 3) to the boiler and at the same time an energy saving of 8% using gas .

The investigations that have been carried out of ACV, are of projects in China, since this country uses renewable energies in its processes as part of a responsible strategy, which allows researchers to compare the results. The LCA allows you to buy different variables, such as the prices of the fuels used and the energy efficiency that each one of them has.

From the comparison of the data obtained with the LCA for the project, it was possible to conclude that in effect the energy saving and the reduction of emissions is significant, compared to the traditional processes that use fossil fuels; the project based on distributed energy presents an 8% energy saving and a 38% reduction in GHG emissions. In addition, the use of renewable energies such as solar and wind have great potential for implementation in the systems.

 

life cycle analysis (LCA) is the compilation and evaluation of inputs, outputs and potential environmental impacts of a product system through its life cycle. In an LCA the potential development of each process and productive stage is qualified, elaborating activities such as:

 

- Collect an inventory of the most important inputs and outputs of a product's system

 

- Evaluate the potential environmental impact associated with these inputs and outputs

 

- Interpret the results of the inventory analysis and the stages evaluated in accordance with the objectives of the study.