Table 1.1 provides gas composition data inferred from sampling of natural gas piped to the Wowgen...

 

Transcribed Image Text:

Table 1.1 provides gas composition data inferred from sampling of natural gas piped to the Wowgen power station. The sample mean energy content was found to be 37.5 MJ/m (volume is expressed under standard conditions of temperature and pressure). Table 1.1 - Sample Composition of Pipeline Natural Gas Gas component Methane Ethane Propane Carbon dioxide Nitrogen Butane Per cent (mol) 88.0 5.5 2.0 3.0 0.7 0.8 (4 marks) In no more than 400 words, summarise the main compliance requirements for the reporting of emissions using each higher order method (i.e., above Method 1) available under NGERS, if they were to be used by the Wowgen facility. Note: as always, any direct quotes - partial or full - must be properly acknowledged (e.g., indented or put in quotation marks) and referenced. (4 marks) Use Method 2 to the extent allowable under NGERS to calculate this year's Scope 1 CO emissions attributable to natural gas (only) for the power station, assuming that it runs on natural gas for 95% of the year at its historical capacity factor and conversion efficiency. (2 marks) Use Method 2 to the extent allowable under NGERS to calculate the share of this year's Scope 1 greenhouse gas emissions attributable to diesel oil (only) for the power station, assuming that it runs on diesel oil for 15 per cent of the year at its historical capacity factor and conversion efficiency. Assume that the estimated density of sampled diesel oil is 0.80 kg/L and the estimated carbon in the sample is 0.75 kg/L. Table 1.1 provides gas composition data inferred from sampling of natural gas piped to the Wowgen power station. The sample mean energy content was found to be 37.5 MJ/m (volume is expressed under standard conditions of temperature and pressure). Table 1.1 - Sample Composition of Pipeline Natural Gas Gas component Methane Ethane Propane Carbon dioxide Nitrogen Butane Per cent (mol) 88.0 5.5 2.0 3.0 0.7 0.8 (4 marks) In no more than 400 words, summarise the main compliance requirements for the reporting of emissions using each higher order method (i.e., above Method 1) available under NGERS, if they were to be used by the Wowgen facility. Note: as always, any direct quotes - partial or full - must be properly acknowledged (e.g., indented or put in quotation marks) and referenced. (4 marks) Use Method 2 to the extent allowable under NGERS to calculate this year's Scope 1 CO emissions attributable to natural gas (only) for the power station, assuming that it runs on natural gas for 95% of the year at its historical capacity factor and conversion efficiency. (2 marks) Use Method 2 to the extent allowable under NGERS to calculate the share of this year's Scope 1 greenhouse gas emissions attributable to diesel oil (only) for the power station, assuming that it runs on diesel oil for 15 per cent of the year at its historical capacity factor and conversion efficiency. Assume that the estimated density of sampled diesel oil is 0.80 kg/L and the estimated carbon in the sample is 0.75 kg/L.