LCA of Electricity Production and Consumption from Two Technologies In this prob
ID: 1759825 • Letter: L
Question
LCA of Electricity Production and Consumption from Two Technologies In this problem you will estimate the life cycle impacts of producing electricity from 2 technologies. This data will then be used to estimate the life cycle impacts of California's electricity system. Much of the data has been pre-calculated for you to help shorten the homework problem Part 1: LCA of electricity from two technologies GOAL: To estimate the life cycle environmental impacts of electricity produced from natural gas and solar photovoltaics (PVs) given the data provided SCOPE: The analysis includes the fuel production and electricity generation (for natural gas electricity), and the technology production and electricity generation for solar photovoltaic. The functional unit is 1 MJ of electricity (at the power plant), and the impacts of interest are: water use, global warming potential, and smog formation potential. Use the following Global Warming Potentials: GWP100 of CO2 1, GWP1o0 of CH4 30 (all methane is fossil), and GWP100 of N2O = 265. METHODS: Use the figures and data below to calculate the impacts of generating 1 MJ of electricity from each of these technologies. In this part of the problem you will IGNORE transmission and distribution. Natural Gas Electricity Production System1 The natural gas production system is broken into two main stages; natural gas production and electricity generation. The power plant has a 50% conversion efficiency of fuel to electricity. The figure and data below include all of the data required for your calculation. Note that the "input" of natural gas reported in the Table for Generation of 1 M of Electricity reflects the 50% efficiency (ie, for 1 MJ of electricity, 2 MJ of natural gas are needed) Natural Gas Production Electricity Generation Transmission and Distribution Extraction and Production Transport and Storage Power plant operation Line losses Processing Natural Gas Production Generation of 1 MJ of Electricit Flow Quantity Unit Flow Water use Smog formation potential Carbon Dioxide Methane (Fossil) QuantityUnit 7.85E-03 m3 water 2.00 MJ Water use 3.92E-05m3 water 6.06E-04 kg Oseq 8.68E-03 kg CO2 1.75E-04 kg CH4 1.57E-07 kg N20 Input Inputs Natural Gas Smog formation potential 7.64E-03 kg Ose 4.78E-01 kg CO2 1.66E-03 kg CH 2.32E-06 kg N20 Carbon Dioxide Methane (Fossil) Ouputs Nitrous Oxide Outputs Nitrous OxideExplanation / Answer
Global warming is the process of increasing temperature of the earth through the greenhouse gases like methane, carbon dioxide, nitrous oxide, water vapor etc. global warming having very terrified consequences like melting glacier, ozone depletion etc. in the comparison of emission from system 1 and emission from system 2 , system 2 has a low production of greenhouse gases . so we should preferred the system 2 because more quantity of greenhouse gas will lead to the increase of the temperature of the earth .we really need to overcome the temperature of the earth if we want to save our environment.
Comparison of two systems on the basis of contribution of the carbon is a good decision because with the help of this process we can determine which system how much carbon is contributing to the environment. Then and on that basis we can try to reduce the quantity of the greenhouse gases in the atmosphere. Even when we know the sources of these gases we can reduces them also.
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