MODULE IV
Condensing boiler technology Page 31

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Unfortunately, during further measurements and examinations some heavy metal elements were found. The reasons for these findings were that metal heat exchangers had been used. So, only heat exchangers made of ceramics, graphite or plastic should be used for these purposes.

Exercise 15

For the single-family house of a customer on average 3200 litres of fuel oil are needed per year for room heating and drinking water heating. The customer now wants to switch to natural gas E (former natural gas H).

Use the following formulas and values for your calculations:




Value comparison table given an annual condensate quantity of
VK = ..................... l/a
Substances/
elements
Maximum permitted (limit) values according to the drinking water regulation Actual measured values of a condensing boiler
mg/a
g/a
mg/a
g/a
Lead        
Chrome        
Nickel        

 

 

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