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Feature/std type #747

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@SimonRubenDrauz SimonRubenDrauz commented Sep 22, 2025

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dlohmeier and others added 18 commits September 4, 2025 14:49
@dlohmeier
implemented exponential form of the temperature loss to ambient for s…
91ef134 
…tationary branch equations; some bits of cleanup
@dlohmeier
small changes in tests, as the results of the new method slightly dif…
f4d4fed 
…fer in some cases, and the pipeflow converges faster
@dlohmeier
correction in pipe model for qext; tried first test, but seems proble…
f923ee2 
…matic with qext and sections
@SimonRubenDrauz
clean API create_pipe
204cd83
@SimonRubenDrauz
Merge remote-tracking branch 'origin/develop' into feature/exponentia…
cf39166 
…l_t_loss
@SimonRubenDrauz
adding sector to nets and adapting std types
94e1b00
@SimonRubenDrauz
-bugfix
c497887 
-remove UserWarning
@SimonRubenDrauz
further improvements
4e0df3f
@SimonRubenDrauz
Merge branch 'feature/exponential_t_loss' into feature/std_type
14035f5 
# Conflicts:
#	src/pandapipes/create.py
@SimonRubenDrauz
allow both u_w_per_mk and u_w_per_m2k --> adding convenient function
488a989
@SimonRubenDrauz
Merge remote-tracking branch 'origin/develop' into feature/std_type
f84c3cd 
# Conflicts:
#	src/pandapipes/component_models/pipe_component.py
#	src/pandapipes/component_models/pump_component.py
#	src/pandapipes/create.py
#	src/pandapipes/pf/derivative_calculation.py
#	src/pandapipes/test/api/test_components/test_heat_consumer.py
#	src/pandapipes/test/api/test_components/test_pipe.py
@SimonRubenDrauz
change position of retrieve_u
1d17954
@SimonRubenDrauz
change position of retrieve_u
0750718
@SimonRubenDrauz
change position of retrieve_u
244dfee
@SimonRubenDrauz
tiny bugfixes
6d541aa
@SimonRubenDrauz
remove incomplete data
2229609
@SimonRubenDrauz
small bug
19cbe6c
@SimonRubenDrauz
small bugs
61825c6
@JonasPfeiffer123
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JonasPfeiffer123 commented Nov 24, 2025

Following our discussion about standard types, I checked the ISOPLUS catalog

I think it could be useful to add the following P235GH/PUR/PEHD pipe type.

The dimensions can be found in:

2.2 ISOPLUS – Einzelrohr
2.2.2 Dimensionen bzw. Typen — Gerade Rohrstangen – Diskonti

The u_w_per_mk values are listed in:

2.2.5 Wärmeverlust ISOPLUS – Einzelrohr Diskonti

I have just prepared this, and it is available as a CSV for DN 20–100 for the three insulation thicknesses.

This would look like:

std_type;nominal_width_mm;outer_diameter_mm;inner_diameter_mm;standard_dimension_ratio;material;u_w_per_mk;u_w_per_m2k;k_mm;sector
ISOPLUS_DRE20_STD;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1295;;0.1;water
ISOPLUS_DRE20_1x;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1114;;0.1;water
ISOPLUS_DRE20_2x;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1028;;0.1;water

A note regarding the outer diameter: it currently refers to the media pipe only, not including the insulation.

Would it be sufficient to use this naming and the CSV directly, or do we need to formally request anything from ISOPLUS first? @SimonRubenDrauz

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JonasPfeiffer123 commented Dec 1, 2025

After a short discussion in today’s weekly meeting, we agreed that referencing ISOPLUS as the source is sufficient. Therefore, the following data can be added.

I'm providing this as a comment rather than opening a separate pull request from a fork of your branch, which seems more efficient. So please integrate the new pipe types directly in this pull request.

Source (ISOPLUS):
https://www.isoplus.group/fileadmin/downloads/PRO_DOC_CAT_Gesamt__SDE__AIN__V1.pdf

Used Chapters:
2.2 ISOPLUS – Einzelrohr
2.2.2 Dimensionen bzw. Typen — Gerade Rohrstangen – Diskonti
2.2.5 Wärmeverlust ISOPLUS – Einzelrohr Diskonti

std_type;nominal_width_mm;outer_diameter_mm;inner_diameter_mm;standard_dimension_ratio;material;u_w_per_mk;u_w_per_m2k;k_mm;sector
ISOPLUS_DRE20_STD;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1295;;0.1;water
ISOPLUS_DRE20_1x;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1114;;0.1;water
ISOPLUS_DRE20_2x;20;26.9;21.7;10.35;P235GH/PUR/PEHD;0.1028;;0.1;water
ISOPLUS_DRE25_STD;25;33.7;27.3;10.53;P235GH/PUR/PEHD;0.1564;;0.1;water
ISOPLUS_DRE25_1x;25;33.7;27.3;10.53;P235GH/PUR/PEHD;0.1308;;0.1;water
ISOPLUS_DRE25_2x;25;33.7;27.3;10.53;P235GH/PUR/PEHD;0.1191;;0.1;water
ISOPLUS_DRE32_STD;32;42.4;36;13.25;P235GH/PUR/PEHD;0.1589;;0.1;water
ISOPLUS_DRE32_1x;32;42.4;36;13.25;P235GH/PUR/PEHD;0.142;;0.1;water
ISOPLUS_DRE32_2x;32;42.4;36;13.25;P235GH/PUR/PEHD;0.129;;0.1;water
ISOPLUS_DRE40_STD;40;48.3;41.9;15.09;P235GH/PUR/PEHD;0.181;;0.1;water
ISOPLUS_DRE40_1x;40;48.3;41.9;15.09;P235GH/PUR/PEHD;0.1593;;0.1;water
ISOPLUS_DRE40_2x;40;48.3;41.9;15.09;P235GH/PUR/PEHD;0.1432;;0.1;water
ISOPLUS_DRE50_STD;50;60.3;53.9;18.84;P235GH/PUR/PEHD;0.2013;;0.1;water
ISOPLUS_DRE50_1x;50;60.3;53.9;18.84;P235GH/PUR/PEHD;0.1763;;0.1;water
ISOPLUS_DRE50_2x;50;60.3;53.9;18.84;P235GH/PUR/PEHD;0.1557;;0.1;water
ISOPLUS_DRE65_STD;65;76.1;69.7;23.78;P235GH/PUR/PEHD;0.2325;;0.1;water
ISOPLUS_DRE65_1x;65;76.1;69.7;23.78;P235GH/PUR/PEHD;0.198;;0.1;water
ISOPLUS_DRE65_2x;65;76.1;69.7;23.78;P235GH/PUR/PEHD;0.1744;;0.1;water
ISOPLUS_DRE80_STD;80;88.9;82.5;27.78;P235GH/PUR/PEHD;0.2418;;0.1;water
ISOPLUS_DRE80_1x;80;88.9;82.5;27.78;P235GH/PUR/PEHD;0.2076;;0.1;water
ISOPLUS_DRE80_2x;80;88.9;82.5;27.78;P235GH/PUR/PEHD;0.1847;;0.1;water
ISOPLUS_DRE100_STD;100;114.3;107.1;31.75;P235GH/PUR/PEHD;0.2543;;0.1;water
ISOPLUS_DRE100_1x;100;114.3;107.1;31.75;P235GH/PUR/PEHD;0.2148;;0.1;water
ISOPLUS_DRE100_2x;100;114.3;107.1;31.75;P235GH/PUR/PEHD;0.1905;;0.1;water
ISOPLUS_DRE125_STD;125;139.7;132.5;38.81;P235GH/PUR/PEHD;0.288;;0.1;water
ISOPLUS_DRE125_1x;125;139.7;132.5;38.81;P235GH/PUR/PEHD;0.2459;;0.1;water
ISOPLUS_DRE125_2x;125;139.7;132.5;38.81;P235GH/PUR/PEHD;0.2138;;0.1;water
ISOPLUS_DRE150_STD;150;168.3;160.3;42.08;P235GH/PUR/PEHD;0.3369;;0.1;water
ISOPLUS_DRE150_1x;150;168.3;160.3;42.08;P235GH/PUR/PEHD;0.2794;;0.1;water
ISOPLUS_DRE150_2x;150;168.3;160.3;42.08;P235GH/PUR/PEHD;0.2343;;0.1;water
ISOPLUS_DRE200_STD;200;219.1;210.1;48.69;P235GH/PUR/PEHD;0.3686;;0.1;water
ISOPLUS_DRE200_1x;200;219.1;210.1;48.69;P235GH/PUR/PEHD;0.2953;;0.1;water
ISOPLUS_DRE200_2x;200;219.1;210.1;48.69;P235GH/PUR/PEHD;0.2472;;0.1;water
ISOPLUS_DRE250_STD;250;273;263;54.6;P235GH/PUR/PEHD;0.3637;;0.1;water
ISOPLUS_DRE250_1x;250;273;263;54.6;P235GH/PUR/PEHD;0.2914;;0.1;water
ISOPLUS_DRE250_2x;250;273;263;54.6;P235GH/PUR/PEHD;0.2468;;0.1;water
ISOPLUS_DRE300_STD;300;323.9;312.7;57.84;P235GH/PUR/PEHD;0.4126;;0.1;water
ISOPLUS_DRE300_1x;300;323.9;312.7;57.84;P235GH/PUR/PEHD;0.3284;;0.1;water
ISOPLUS_DRE300_2x;300;323.9;312.7;57.84;P235GH/PUR/PEHD;0.2698;;0.1;water
ISOPLUS_DRE350_STD;350;355.6;344.4;63.5;P235GH/PUR/PEHD;0.4009;;0.1;water
ISOPLUS_DRE350_1x;350;355.6;344.4;63.5;P235GH/PUR/PEHD;0.3169;;0.1;water
ISOPLUS_DRE350_2x;350;355.6;344.4;63.5;P235GH/PUR/PEHD;0.2605;;0.1;water
ISOPLUS_DRE400_STD;400;406.4;393.8;64.51;P235GH/PUR/PEHD;0.4222;;0.1;water
ISOPLUS_DRE400_1x;400;406.4;393.8;64.51;P235GH/PUR/PEHD;0.3277;;0.1;water
ISOPLUS_DRE400_2x;400;406.4;393.8;64.51;P235GH/PUR/PEHD;0.2684;;0.1;water
ISOPLUS_DRE450_STD;450;457;444.4;72.54;P235GH/PUR/PEHD;0.4242;;0.1;water
ISOPLUS_DRE450_1x;450;457;444.4;72.54;P235GH/PUR/PEHD;0.3299;;0.1;water
ISOPLUS_DRE450_2x;450;457;444.4;72.54;P235GH/PUR/PEHD;0.2703;;0.1;water
ISOPLUS_DRE500_STD;500;508;485.4;46.18;P235GH/PUR/PEHD;0.4149;;0.1;water
ISOPLUS_DRE500_1x;500;508;485.4;46.18;P235GH/PUR/PEHD;0.3249;;0.1;water
ISOPLUS_DRE500_2x;500;508;485.4;46.18;P235GH/PUR/PEHD;0.2669;;0.1;water
ISOPLUS_DRE600_STD;600;610;595.8;48.8;P235GH/PUR/PEHD;0.5002;;0.1;water
ISOPLUS_DRE600_1x;600;610;595.8;48.8;P235GH/PUR/PEHD;0.3748;;0.1;water
ISOPLUS_DRE600_2x;600;610;595.8;48.8;P235GH/PUR/PEHD;0.3065;;0.1;water
ISOPLUS_DRE700_STD;700;711;695;88.88;P235GH/PUR/PEHD;0.5665;;0.1;water
ISOPLUS_DRE700_1x;700;711;695;88.88;P235GH/PUR/PEHD;0.4238;;0.1;water
ISOPLUS_DRE700_2x;700;711;695;88.88;P235GH/PUR/PEHD;;;0.1;water
ISOPLUS_DRE800_STD;800;813;795.4;92.39;P235GH/PUR/PEHD;0.6372;;0.1;water
ISOPLUS_DRE800_1x;800;813;795.4;92.39;P235GH/PUR/PEHD;0.4732;;0.1;water
ISOPLUS_DRE800_2x;800;813;795.4;92.39;P235GH/PUR/PEHD;;;0.1;water
ISOPLUS_DRE900_STD;900;914;894;91.4;P235GH/PUR/PEHD;0.7027;;0.1;water
ISOPLUS_DRE900_1x;900;914;894;91.4;P235GH/PUR/PEHD;0.5221;;0.1;water
ISOPLUS_DRE900_2x;900;914;894;91.4;P235GH/PUR/PEHD;;;0.1;water
ISOPLUS_DRE1000_STD;1000;1016;994;92.36;P235GH/PUR/PEHD;0.7742;;0.1;water
ISOPLUS_DRE1000_1x;1000;1016;994;92.36;P235GH/PUR/PEHD;0.5733;;0.1;water
ISOPLUS_DRE1000_2x;1000;1016;994;92.36;P235GH/PUR/PEHD;;;0.1;water

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3 participants

@SimonRubenDrauz @JonasPfeiffer123 @dlohmeier