Description Usage Arguments Details Value See Also Examples
Calculate temperature drop in steel pipe of district heating system (where water is a heat carrier) that is a result of heat losses through pipe wall and insulation using Minenergo Order 325 as a basis for values of heating flux.
Since Minenergo Order 325 is used as the basis for values of heating flux the calculated temperature drop may be considered as a normative temperature drop. If the actual (somehow measured) temperature drop is more than this normative temperature drop they may consider such difference to be due to extra-normative heat losses. The presence of the latter requires appropriate maintenance activities.
1 2 3 4 5 6 7 8 9 10 11 12 |
temperature |
temperature of heat carrier (water) inside the pipe measured at the
entrance of pipe, [°C]. Type: |
pressure |
absolute pressure
of heat carrier (water) inside the pipe, [MPa]. Type: |
consumption |
amount of heat carrier (water) that is transferred by pipe during a period,
[ton/hour]. Type: |
d |
internal diameter of pipe, [mm]. Type: |
len |
length of pipe, [m]. Type: |
year |
year when the pipe is put in operation after laying or total overhaul.
Type: |
insulation |
insulation that covers the exterior of pipe:
Type: |
laying |
type of pipe laying depicting the position of pipe in space:
Type: |
beta |
should they consider additional heat losses of fittings?
Type: |
exp5k |
pipe regime flag: is pipe operated more that 5000 hours per year?
Type: |
The function is a simple wrapper for call of dropt
with parameter flux
calculated by m325nhl
.
normative temperature drop at the outlet of pipe, [°C].
Type: assert_double
.
dropt
for calculating temperature drop in pipe using
actual heat flux values
Other Minenergo:
m278hlair()
,
m278hlcha()
,
m278hlund()
,
m278insdata
,
m278inshcm()
,
m278soildata
,
m325beta()
,
m325nhldata
,
m325nhl()
,
m325testbench
1 2 3 4 5 6 |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.