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Description:

hplib 1.9

hplib - heat pump library
Repository with code to

build a database with relevant data from public Heatpump Keymark Datasets.
identify efficiency parameters from the database with a least-square regression model, comparable to Schwamberger [1].
simulate heat pump efficiency (COP) as well as electrical (P_el) & thermal power (P_th) and massflow (m_dot) as time series.

For the simulation, it is possible to calculate outputs of a specific manufacturer + model or alternatively for one of 6 different generic heat pump types.
[1] K. Schwamberger: „Modellbildung und Regelung von Gebäudeheizungsanlagen mit Wärmepumpen“, VDI Verlag, Düsseldorf, Fortschrittsberichte VDI Reihe 6 Nr. 263, 1991.
For reference purposes:

DOI:
Citation: Tjarko Tjaden, Hauke Hoops, Kai Rösken. (2021). RE-Lab-Projects/hplib: heat pump library (v1.8). Zenodo. https://doi.org/10.5281/zenodo.5521597

Documentation
If you're interested in how the database and parameters were calclulated, have a look into the Documentation HTML or Jupyter-Notebook. There you also find a simulation examples and a validation.

Heat pump models and Group IDs
The hplib_database.csv contains the following number of heat pump models, sorted by Group ID

[Group ID]: Count
Reglulated
On-Off

Outdoor Air / Water
[1]: 366
[4]: 23

Brine / Water
[2]: 54
[5]: 53

Water / Water
[3]: 0
[6]: 10

Database
All resulting database CSV file are under .
The following columns are available for every heat pump of this library

Column
Description
Comment

Manufacturer
Name of the manufacturer
30 manufacturers

Model
Name of the heat pump model
506 models

Date
heat pump certification date
2016-07-27 to 2021-03-10

Type
Type of heat pump model
Outdoor Air/Water, Brine/Water, Water/Water

Subtype
Subtype of heat pump model
On-Off, Regulated

Group ID
ID for combination of type and subtype
1 - 6

Refrigerant
Refrigerant Type
R134a, R290, R32, R407c, R410a, other

Mass of Refrigerant [kg]
Mass of Refrigerant
0.15 to 14.5 kg

SPL indoor [dBA]
Sound emissions indoor
15 - 68 dBA

SPL outdoor [dBA]
Sound emissions outdoor
33 - 78 dBA

PSB [W]
Eletrical power consumption, standby mode
3 to 60 W

Climate
Climate definition for set points, which were used for parameter identification
average, colder, warmer

P_el_h_ref [W]
Electrical power at -7°C / 52°C
881 to 23293 W

P_th_h_ref [W]
Thermal heating power at -7°C / 52°C
2400 to 69880 W

p1-p4_P_th
Fit-Parameters for thermal power
-

p1-p4_P_el
Fit-Parameters for electricl power
P_el = P_el_ref * (p1 * T_in + p2 * T_out + p3 + p4 * T_amb)

p1-p4_COP
Fit-Parameters for COP
COP = p1 * T_in + p2 * T_out + p3 + p4 * T_amb

p1-p4_EER
Fit-Parameters for EER
EER = p1 * T_in + p2 * T_out + p3 + p4 * T_amb

MAPE_P_el
mean absolute percentage error for electrical input power (simulation vs. measurement)
average over all heat pump models = 16,3 %

MAPE_COP
mean absolute percentage error for thermal input power (simulation vs. measurement)
average over all heat pump models = 9,8 %

MAPE_P_th
mean absolute percentage error for coefficient of performance (simulation vs. measurement)
average over all heat pump models = 19,7 %

Usage

Get repository with pip:

pip install hplib

or:

Download or clone repository:

git clone https://github.com/RE-Lab-Projects/hplib.git
Create the environment:

conda env create --name hplib --file requirements.txt

Create some code with from hplib import hplib and use the included functions hplib.load_database(), hplib.get_parameters, hplib.same_built_type(), hplib.HeatPump, hplib.HeatPump.simulate, hplib.HeatingSystem.calc_brine_temp() and hplib.HeatingSystem.calc_heating_dist_temp()
Hint: The csv files in the output folder are for documentation and validation purpose. The code and database files, which are meant to be used for simulations, are located in the hplib folder.

Input-Data
The European Heat Pump Association (EHPA) hosts a website with the results of laboratory measurements from the keymark certification process. For every heat pump model a pdf file can be downloaded from https://keymark.eu/en/products/heatpumps/certified-products.
This repository is based on all pdf files that were download for every manufacturer on 2021-03-12.
Further development & possibilities to collaborate
If you find errors or are interested in developing together on the heat pump library, please create an ISSUE and/or FORK this repository and create a PULL REQUEST.