Difference between revisions of "Energy balance in Stuttgart"

Revision as of 21:17, 17 August 2013

Question

What are the amounts of energy produced, consumed, imported, and exported in Stuttgart?

Answer

⇤# : Rcode for using the ovariable is needed. --Jouni 23:03, 26 February 2013 (EET)

Rationale

There are several energy transformations that each describe a specific process of energy production or use. Per unit activity, there is a constant amount of different inputs and outputs into and from this process, respectively. These unit processes are used for Stuttgart in such a way that one critical input or output from each relevant energy transformation is listed here; all other inputs and outputs logically follow from the nature of the transformation process.

Data

A data table on an Opasnet page is used to enter the matrix data. This is rather user friendly. As a side effect, the table does not look like a matrix so it might be confusing in the beginning. The matrix is created by using the "Equation" as information about the row of the matrix and "Col" as information about the column of the matrix. "Result" is the actual value, and Description is anything useful for a reader (it is not used in calculations).

Calculations

library(OpasnetUtils)
library(xtable)

# These three are city-specific: Matrix_page, Additions, Solutions.

Matrix_page <- "Op_en5815" # This is the page with the matrix content.

Additions <- data.frame() # These are additional contents to the matrix if any, in addition to Matrix_page.

Solutions <- c(rep(0, 39), # These are the solutions (right sides) of the equations. The size must match the matrix.
	Cons_Ind_electricity,
	Cons_Traffic_electricity,
	Cons_Home_electricity,
	Cons_Commerce_electricity,
	Cons_Ind_local_heating,
	Cons_Home_local_heating,
	Cons_Commerce_local_heating,
	Cons_Ind_district_heat,
	Cons_Home_district_heat,
	Cons_Commerce_district_heat
)

Fetch2(data.frame(Name = "energy.balance", Key = "qffJP3u5RpFw1GuL"))

energy.balance <- EvalOutput(energy.balance, intermediates = TRUE)
print(xtable(energy.balance@output), type = 'html')

objects.put(energy.balance, Matrix_page, Additions, Solutions)

cat("Object energy.balance (Stuttgart) saved with output. Also objects Matrix_page, Additions and Solutions saved. 
Write down the key of the model run page for further use.\n")

See also

• Previous way of presenting energy balances in Stuttgart: consumption, transformations, supply
• About large systems of non-linear equations: BB package in R

Keywords

References

Related files

<mfanonymousfilelist></mfanonymousfilelist>