# LCA of a coffee cup

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## Question

What are the life cycle impacts of a coffee cup?

## Answer

 ``` library(OpasnetUtils) library(ggplot2) objects.latest("Op_en6007", code_name = "answer") # [[OpasnetUtils/Drafts]]. We need truncateIndex. objects.latest("Op_en5902", code_name = "initiate") # [[Damage vector for life-cycle analysis]]. We need damagesPerImpact, impactsPerDollar, damages. objects.latest("Op_en5904", code_name = "initiate") # [[Normalisation data for life cycle assessments]]. We need normalisation. # Take the direct requirements of an activity (in this case, producing a cup of coffee). activity <- opbase.data("Op_en5902.coffee_cup_inputs") activity\$Obs <- NULL # Remove the redundant Obs column. cat("Primary prosesses related to a cup of coffee (in Euro)\n") oprint(activity) activity <- Ovariable("activity", data = activity) damages <- EvalOutput(damages) damages2 <- truncateIndex(damages, c("Unique_categories", "Damage_categories")) # Truncates number of levels of each index to 10. # Plot results on a bar graph. cat("At most ten largest damage categories or purchasing sectors are shown.\n") ggplot(damages2@output, aes(x = Damage_categories, weight = damagesResult, fill = Purchasing_sector)) + geom_bar() + theme_grey(base_size = 18) + theme(axis.text.x = element_text(angle = 45)) + labs( title = "Life cycle impacts of a cup of coffee", x = "Damage", y = "Amount" ) ggplot(damages2@output, aes(x = Damage_categories, weight = damagesResult, fill = Unique_categories)) + geom_bar() + theme_grey(base_size = 18) + theme(axis.text.x = element_text(angle = 45)) + labs( title = "Life cycle impacts of a cup of coffee", x = "Damage", y = "Amount" ) damages2 <- truncateIndex(damages, c("Unique_categories", "Damage_categories", "Purchasing_sector"), bins = 4) # Truncates # of bins to 4. oprint(summary(damages2)) ```

## Rationale

### Data

Products(-)
ObsProductActivity categoryUnitConditionsURLDummyDescription
1Regular coffeeFood and beverage service activitiescuphttp://en.opasnet.org/w/LCA_of_a_coffee_cupA cup of regular coffee made with a typical coffee machine and drank from a ceramic cup. Benefits: tastes good, stimulates.
2Instant coffeeFood and beverage service activitiescuphttp://en.opasnet.org/w/LCA_of_a_coffee_cupA cup of instant coffee made with water from water heater and drank from a plastic cup. Benefits: tastes good, stimulates.
3WaterFood and beverage service activitiesLhttp://en.opasnet.org/w/LCA_of_a_coffee_cupTap water
4Coffee powderFood and beverage service activitieskghttp://en.opasnet.org/w/LCA_of_a_coffee_cupRegular coffee powder
5Instant coffee powderFood and beverage service activitieskgInstant coffee powder
6ElectricityEletricity, gas, steam and air conditioning supplykWhhttp://en.opasnet.org/w/Energy_balance_in_Kuopio
7Ceramic cupManufacture of fabricated metal products, except machinery and equipmentproduct-years
8Coffee machineManufacture of fabricated metal products, except machinery and equipmentproduct-years
9Water heaterManufacture of fabricated metal products, except machinery and equipmentproduct-years
Processes(-)
ObsProcessProductUnitConditionsAmountDescription
1Coffee makingRegular coffeecup1Making coffee with a regular coffee machine at home
2Coffee makingWaterL-0.2
3Coffee makingCoffee powderkg-0.005
4Coffee makingElectricitykWh-0.01
5Coffee makingCeramic cupproduct-years-0.003
6Coffee makingCoffee machineproduct-years-0.003
7Instant coffee makingInstant coffeecup1Making coffee from instant coffee powder at work
8Instant coffee makingWaterL-0.2
9Instant coffee makingInstant coffee powderkg-0.002
10Instant coffee makingElectricitykWh-0.01
11Instant coffee makingPlastic cup#-1
12Instant coffee makingWater heaterproduct-years-0.0003
Product balances(#)
ObsEquationDummyDescription
1Coffee making: Regular coffee + Instant coffee making: Instant coffee = 25000000Five million people in Finland drink five cups of coffee per day.
2Instant coffee making: Instant coffee = 0.2 * Coffee making: Regular coffee

The data are based on discussions at CII, January 2013.[1]

Direct inputs of a coffee cup(Euro)
ObsPurchasing_sectorResultDescription
131131A - Sugar cane mills and refining0.1
2112120 - Dairy cattle and milk production0.2
3311820 - Cookie, cracker, and pasta manufacturing0.5
4311920 - Coffee and tea manufacturing0.2
5221100 - Electric power generation, transmission, and distribution0.1
6322299 - All other converted paper product manufacturing0.04
7335210 - Small electrical appliance manufacturing0
8335221 - Household cooking appliance manufacturing0.01

## References

1. Gregory Norris, personal communication.