Covering Up Hyperpigmentation With Makeup

The energy balance - A critical view

11/12/2007

at the district government
32756 Detmold

Ladies and Gentlemen,

in a template the Mayor of Werther, Weike woman, to the members of the Planning Committee of the City Werther, 30.10.2007, which states: "With representatives of the District Planning Authority, I am 22.10. conducted regarding the classification of state planning of the biogas plant in the planned scope of a voting meeting. The planned plant, the regional planning consent, provided the prospect is made. that the City Council the concept of a "unique position" decides this system. The possibilities raised by the investors for local heating were described as exemplary. "
Below I explain you my point of view.

On my account I put based on the following values from the literature:

gas Otto engine
electrical efficiency, from 30-41%, calculated at 41%

dual fuel
electrical efficiency: 35-45%, calculated with 45%

-> averaged 42%

On my bill I'm taking into account the different benefits and efficiencies of an averaged efficiency of the cogeneration plant of the above 42%. This follows from the highest values found in the literature.

According to the operator results in the production of energy as follows:

Jenbacher gas Otto engines
power 1052 kW / h -> performance at 68.2% calculated efficiency of 41%

pilot injection
power 490 kW / h -> performance at 31.8% calculated efficiency of 45%

Total: 1,542 kW / h -> Performance 100.0%

is ~ 13 507 MW, the annual electrical power, which will be paid with approximately 1.472 million €. As mentioned in the literature values obtained under optimal laboratory conditions, in practice at least 2% must be deducted. This corresponds to an electrical efficiency of the CHP of 40%.

case of a power generation of this magnitude At least 20261.88 MW of heat, which are at least 60%.
The average heat consumption in Germany is 170 kW of heat per year per square meter of living space. Because the average efficiency of heating equipment is 90%, is from a maximum demand of 150 kW per year and sqm assumed. (These figures are any utilities.)
The operator is for example based on a value that is 6 times higher than the national average.

Based on 6187 square meters, according to the operator, to be heated living space of 150 kW is calculated 928.05 MW heat per year. This came 3985 MW / year for the coenzymes system, the stable, the Bonbonentpackung and Kartoffelgarung. That's a total 4913.65 MW / year. They are up to 24% of the generated heat. (In the coenzymes system I came from a non-stop use, the Kartoffelgarung I have planned 4 hours daily in the Bonbonentpackung 12 hours daily throughout the year in which Stable heating 75% utilization in the year.)
Of the heat generated 20261.88 MW used so only a maximum of 24%. If we now take into account that, for example

• the energy balance of the entire system, not just the CHP is considered
  
• the system consumes less energy on warm days,


• the engines in the literature maximum efficiency not reach to come due to maintenance, wear, contaminated gas, etc.,


• motors are used that do not reach their design produces the highest given in the literature efficiencies


• the over time, less expectant energy needs of the living room due to legally required and / or voluntary improvements in the range of insulation and isolation

the actual practical use of thermal energy to well below 20% is being set. Accordingly, heating more than 80% of the generated heat of the atmosphere above the plant to deteriorate and the climate.
with 15 348 MW of unused waste heat per year could theoretically 102 320 m2 of living space to be heated. That equates to over 1000 apartments of 100 m2.

That to me also, for example, but not in a positive way. If you deviate from my perspective, I would love to get an explanation of your assessment. I would also like to ask you to explain to me your demand for "unique position of the plant.
For questions, literature and sources I would love you to also be available shortly.

Sincerely
NN

The author of this Letter is known to the administrator.
Unfortunately, he has received to date no response from the district government Detmold!