Data represent values of specific heat loss power officially accepted by Minenergo Order 325 as norms. Those values are maximums which are legally affirmed to contribute to normative heat loss \(Q_NHL\) of district heating systems with water as a heat carrier.
Format
A data frame with 17328 rows and 8 variables:
- source
Identifier of data source: identifiers suited with glob t?p? mean appropriate table ?.? in Minenergo Order 325; identifier sgc means that values are additionally postulated (see Details). Type:
assert_character.- epoch
Year depicting the epoch when the pipe is put in operation after laying or total overhaul. Type:
assert_integer.- laying
Type of pipe laying depicting the position of pipe in space. Only five types of pipe laying are considered:
air,channel,room,tunnel,underground.
Type:
assert_character.- exp5k
Logical indicator for pipe regime: if
TRUEpipe is operated more that5000hours per year. Type:assert_logical.- insulation
Identifier of insulation that covers the exterior of pipe:
0no insulation
1foamed polyurethane or analogue
2polymer concrete
Type:
assert_integerish.- diameter
Nominal internal diameter of pipe, [mm]. Type:
assert_double.- temperature
Operational temperature of pipe, [°C]. Type:
assert_double.- loss
Normative value of specific heat loss power equal to heat flux output by 1 meter length steel pipe during an hour, [kcal/m/hour]. Type:
assert_double.
Details
Data is organized as a full factorial design, whereas for some factorial combinations Minenergo Order 325 does not provide values. For that cases values are postulated by practical reasons in Siberian cities and marked with source label sgc.
Usually the data is not used directly. Instead use function m325nhl.
See also
Other Minenergo:
m278hlair(),
m278hlcha(),
m278hlund(),
m278insdata,
m278inshcm(),
m278soildata,
m325beta(),
m325nhl(),
m325testbench