# Pump System Test Instances and Electronical Pump Catalogues
This dataset contains relevant information for planning pump systems. This includes (i) the description of different test cases and their boundary conditions. It comprises (a) the pump system of an industrial cooling circuit and (b) several booster stations for different buildings as well as a test rig. These data are available as two .json files. Furthermore, (ii) electronic pump catalogues are provided. Standardised chemical pumps, pumps for booster stations of high-rise buildings and the pumps of the test rig including suitable frequency converters are described. The description includes the pump types, their characteristic curves and possible purchase prices. A total of 296 different pump types are specified. These data are available as three .csv files.
The file ReadMe.md explains the data in more detail, especially the meaning of the individual columns of the .csv files.
The data can be used to evaluate planning methods - especiall algorithmically supported methods. For the mathematical optimisation of pump systems, the data of the cooling circuit and the standardised chemical pumps have been used in publication [2] and [3] and the data of the buildings and the test rig have been used in publications [1] and [2]. Further information on the pumps and test cases can be found in these publications.
### References
[1] - Tim M. Müller, Philipp Leise, Imke-Sophie Lorenz, Lena C. Altherr and Peter F. Pelz: Optimization and validation of pumping system design and operation for water supply in high-rise buildings. In: Optimization and Engineering 22.2 (2021), S. 643–686, DOI: https://doi.org/10.1007/s11081-020-09553-4.
[2] - Tim M. Müller: Algorithmisch gestützte Planung dezentraler Pumpensysteme, PhD-Thesis, Technical University of Darmstadt, in preparation.
[3] - Tim M. Müller, Jannik Neumann, Marvin M. Meck und Peter F. Pelz: Sustainable Cooling Cycles by Algorithmically Supported Design of Decentral Pumping Systems. Under Review in Applied Thermal Engineering (2022).
[4] - R. Hirschberg. „Lastprofil und Regelkurve zur energetischen Bewertung von Druckerhöhungsanlagen (DEA)“. In: HLH Lüftung/Klima, Heizung/Sanitär, Gebäudetechnik (2014).
## standardised_chemical_pumps.csv
The data contains a list of 63 different standard chemical pumps (cf. EN ISO 2858). These cover a wide range of operating points from 10^0 to 10^3 m³/h and 0.4 to 10 bar. The maximum efficiency is 84.94%. The data was collected in 2019 using publicly available data. Prices are net prices. Pump prices were estimated from a few known prices. The prices of the Frequency Converters are taken from publicly available data. The manufacturer of the pumps is not stated. The pump data is used in publication [2] and [3]
The data includes the following parameters:
- "Pump ID": Identifier assigned to the data
- "Type": Size code according to EN ISO 2858 (Inlet Diameter - Outlet Diameter)
- "Inlet Diameter": Diameter at inlet in mm
- "Outlet Diameter": Diameter at outlet in mm
- "Impeller Diameter": Diameter of the impeller in mm
- "Pump Price": Net sales price of the pump in €. Prices are estimated by an unspecified correlation and by a few known sales prices. The estimate refers to price in Germany from the year 2019.
- "FC Price": Net sales price of a suitable frequency converter in €. Based on publicly available, but anonymous, market information for Germany in 2019.
- "Pump efficiency at BEP": Maximum efficiency of the pump. Calculated based on the characteristic curve of the pumps.
- "Efficiency FC": estimated average efficiency of the frequency inverter.
- "Minimal Rotational Speed": minimal possible speed of the pump in rotations per minute
- "Nominal Rotational Speed": nominal speed of the pump in rotations per minute
- "Maximal Rotational Speed": maximal speed of the pump in rotations per minute
- "Nominal Normalized Rotational": relative nominal speed. Nominal Rotational Speed divided by Maximal Rotational Speed.
- "Minimal Normalized Rotational Speed": relative minimal speed. Minimal Rotational Speed divided by Maximal Rotational Speed.
- "Maximal Normalized Rotational Speed": relative maximum speed. Maximum Rotational Speed divided by Maximal Rotational Speed. Equals 1.
- "Regression coefficients head flow characteristic "alpha_1 alpha_2 alpha_3"": Regression Coefficients of the pumps head-flow-characteristic according to Equation: H = alpha_1 * Q^2 + alpha_2 * Q * n + alpha_3 * n^2 with the pumps head "H" in m, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by maximal Rotational Speed). The single coefficients are delimited with a space.
- "Regression coefficients power flow characteristic "beta_1 beta_2 beta_3 beta_4"": Regression Coefficients of the pumps power-flow-characteristic according to Equation: P = beta_1 * Q^3 + beta_2 * Q^2 * n + beta_3 * Q * n^2 + beta_4 * n^3 with the pumps electrical Power "P" in kW, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by maximal Rotational Speed). The electrical power refers to the input power of the motor, thus includes its efficiency. The single coefficients are delimited with a space.
- "Coefficients of left characteristic map limit "gammaleft_1 gammaleft_2"":Regression coefficients of the left boundary of the head-flow-characteristic. This restricts the operating range: H <= gammaleft_1 * Q + gammaleft_2. The single coefficients are delimited with a space.
- "Coefficients of right characteristic map limit "gammaright_1 gammaright_2"":Regression coefficients of the right boundary of the head-flow-characteristic. This restricts the operating range: H >= gammaleft_1 * Q + gammaleft_2. The single coefficients are delimited with a space.
- "Coefficients of top characteristic map limit "gammatop_1 gammatop_2"":Regression coefficients of the upper boundary of the head-flow-characteristic. This restricts the operating range: H <= gammatop_1 * Q + gammatop_2. The single coefficients are delimited with a space.
## pressure_booster_pumps_for_buildings.csv
The list includes 200 multistage centrifugal pumps from one manufacturer. The purpose is the use in pressure boosting stations for drinking water supply in high buildings. These cover a wide range of operating points from 10^0 to 10^2 m³/h and 1 to 25 bar. The maximum efficiency is 78.9%. The data was collected in 2018 using publicly available data. Prices are net prices. The prices of the Frequency Converters are taken from publicly available data. The manufacturer of the pumps is not stated. The pump data is used in publication [1] and [2]
- "Pump ID": Identifier assigned to the data
- "Nominal Rotational Speed": nominal speed of the pump in rotations per minute
- "Size": Size according to manufacturer. Corresponds to volume flow Q (in m³/h) at the optimum operating point according to manufacturer's specifications.
- "Number of Stages": Number of stages
- "Number of Reduced Stages": Number of reduced stages
- "Regression Coefficients Head Flow Characteristic "alpha_1 alpha_2 alpha_3"": Regression Coefficients of the pumps head-flow-characteristic according to Equation: H = alpha_1 * Q^2 + alpha_2 * Q * n + alpha_3 * n^2 with the pumps head "H" in m, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by Nominal Rotational Speed). The single coefficients are delimited with a space.
- "Regression Coefficients Power Flow Characteristic "beta_1 beta_2 beta_3 beta_4"": Regression Coefficients of the pumps power-flow-characteristic according to Equation: P = beta_1 * Q^3 + beta_2 * Q^2 * n + beta_3 * Q * n^2 + beta_4 * n^3 with the pumps electrical Power "P" in W, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by maximal Rotational Speed). The electrical power refers to the input power of the motor, thus includes its efficiency. The single coefficients are delimited with a space.
- "Pump efficiency at BEP": Maximum efficiency of the pump. Calculated based on the characteristic curve of the pumps.
- "Maximal Hydraulic Power in W": Maximum hydraulic power that can be provided by the pump in W.
- "Maximal Electrical Power in W": Maximum electrical input power of the pump in W.
- "Nominal Electrical Power of Pump in kW": Nominal installed load of the pump according to the manufacturer's specifications in kW.
- "Nominal Electrical Power of Associated Frequency Converter in kW": Nominal installed load of a suitable frequency converter
- "Price of Pump in Euro": Net sales price of the pump in €. The prices are taken from the manufacturer's data and apply to Germany in 2018.
- "Price of Frequency Converter in Euro": Net sales price of the frequency converter. The prices are taken from the manufacturer's data and apply to Germany in 2018.
- "Efficiency of Frequency Converter": estimated average efficiency of the frequency inverter.
- "Minimal Relative Rotational Speed": relative minimal speed. Minimal Rotational Speed divided by Maximal Rotational Speed.
- "in Use in Test Case": Specification if the pump is preselected and used in the test cases of publications [1] and [2].
## pumps_of_modular_pumpsystem_testrig.csv
The list includes the pumps that can be installed on the modular pump system test rig at the Technical University of Darmstadt, Chair of Fluid Systems. The test stand is described and the pump data is used in publications [1] and [2] . The pumps comprise 6 different types from three manufacturers. The pumps are circulator pumps for heating systems. All pumps have an integrated frequency converter. The manufacturers of the pumps are not stated.
- "Pump ID": Identifier assigned to the data
- "Label": Internal Name of the Pump
- "Number of Available Pumps": Quantity, how often the pump type is available at the test rig
- "Maximal Head in m": Maximum head of the pump in m
- "Maximal Volumeflow in m³/h": maxium volumeflow of the pump in m³/h
- "Maximal Electrical Power in W": maximum electrical Input Power of the Pump in W
- "Minimal Electrical Power in W": minimum electrical Input Power of the Pump (standby power consumption) in W
- "Regression Coefficients Head Flow Characteristic "alpha_1 alpha_2 alpha_3"": Regression Coefficients of the pumps head-flow-characteristic according to Equation: H = alpha_1 * Q^2 + alpha_2 * Q * n + alpha_3 * n^2 with the pumps head "H" in m, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by Nominal Rotational Speed). The single coefficients are delimited with a space.
- "Regression Coefficients Power Flow Characteristic "beta_1 beta_2 beta_3 beta_4 beta_5"": Regression Coefficients of the pumps power-flow-characteristic according to Equation: P = beta_1 * Q^3 + beta_2 * Q^2 * n + beta_3 * Q * n^2 + beta_4 * n^3 + beta_5 with the pumps electrical Power "P" in W, the pumps volumeflow "Q" in m³/h and the relative speed of the pump "n" (Rotational Speed divided by maximal Rotational Speed). The electrical power refers to the input power of the motor and frequency converter, thus includes its efficiency. In contrast to the other pumps, a constant factor "beta_5" is used to describe the standby consumption of the pumps. The single coefficients are delimited with a space.
- "Regression Coefficient of Pressure Loss of Pump Fittings "zeta"": Fittings were installed upstream and downstream of the pumps to measure the pressure difference. These have a significant pressure loss. The total pressure loss is H_loss = zeta * Q^2 with "H_loss" in m and "Q" in m³/h. This can be added directly to alpha_1 to obtain the true head of the *installed* pump.
- "Pump Efficiency at BEP": Maximum efficiency of the pump. Calculated based on the characteristic curve of the pumps.
- "Maximal Hydraulic Power in W": Maximum hydraulic power that can be provided by the pump in W.
- "Sale Price of Pump in Euro": Net sales prices of pumps in Germany in 2018/2019.
- "Scaled Price of Pump in Euro": The costs were scaled to obtain a higher comparability to real pump systems. The scaling was chosen so that the costs per installed hydraulic capacity are similar to the pumps from *pressure_booster_pumps_for_buildings.csv*.
- "Price of Frequency Converter in Euro": All pumps are equipped with a frequency converter, so that the costs for this are set to zero.
- "Efficiency of Frequency Converter": The efficiency of the frequency converter is already integrated in the power characteristic curve and is therefore set to 1.
- "Minimal Relative Rotational Speed": relative minimal speed. Minimal Rotational Speed divided by Maximal Rotational Speed.
- "in Use in Test Case ": Specification if the pump is used in the test cases of publications [1] and [2].
## test_case_cooling_circuit.json
Design requirements for planning the pump system of an industrial cooling circuit. The necessary volume flows in the heat exchangers and/or feed lines are specified and the associated pressure losses are given. Control valves are located in front of most heat exchangers, for which the minimum pressure drop is specified. For each load scenario, a time share (full load, partial load, standby) is specified. A more detailed description of the test case can be found in publications [2] and [3].
## test_case_booster_stations_buildings.json
Design requirements for the planning of booster stations for buildings. Three different real buildings are considered and one test rig (this one with experimental and literature based input data). The specification of the volume flow requirement and the necessary pressure at the sinks of the building is given. The input pressure is set to 0 bar. The data is inspired by real buildings, but does not claim to realistically represent the demand of these buildings. The volume flow distribution, time fractions and pressure loss in the central case are estimated according to publication [4]. A more detailed description of the test cases and the test rig can be found in publications [2] and [3].