This README file was generated on 2023-02-01 by Manuel Verdnik. Last updated: 2023-02-01. ------------------- GENERAL INFORMATION ------------------- // Title of Dataset: Replication data for: Modellbasierte Analyse einer NH3-HTWP in einem Molkereibetrieb // DOI: https://doi.org/10.5281/zenodo.7405056 // Contact Information // Name: Manuel Verdnik // Institution: Institute of Thermal Engineering, Graz University of Technology // Email: manuel.verdnik@tugraz.at // ORCID: 0000-0002-2587-6071 //Contributors: Manuel Verdnik, Philipp Wagner, Michael Wernhart, René Rieberer // Kind of data: Data files (.csv), tables (.png) and figures (.png) // Date of data collection/generation: 2021-05-25 - 2022-11-08 // Funding sources: This work is based on the contents of the exploratory project "DySiWiP - Dynamic simulation models for high-temperature heat pumps for overall system simulations of industrial processes" (FFG project no. 881124) and was carried out within the framework of the EU project "ENOUGH - European Food Chain Supply to reduce GHG emission by 2050". This project received funding from the Horizon 2020 Framework Programme for Research and Innovation of the European Union (project no. 101036588). // Description of dataset: This dataset contains the data of the publication: Verdnik, M., Wagner, P., Rieberer, R., 2022. Modellbasierte Analyse einer NH3-HTWP in einem Molkereibetrieb. Proc. Deutsche Kälte-Klima-Tagung 2022, Magdeburg, Germany, DOI: https://doi.org/10.5281/zenodo.7543933 -------------------------- METHODOLOGICAL INFORMATION -------------------------- The investigated system at the dairy (see '01_Figure_1_System_Layout_Sensor_Positions.png') consisting of a chiller, an integrated HTHP, thermal storage and a Cleaning-In-Place (CIP)-System was modeled using the modelica-based TIL-Suite in Dymola (see publication above for detailed information). This dataset includes the simulation results from a model-based analysis of the system in a dairy, as well as experimental data used for the validation of the simulation model. -------------------- DATA & FILE OVERVIEW -------------------- 00_README.txt 01_Figure_1_System_layout_sensor_positions.png 02_Table_1_Design_data_chiller_and_HTHP.png 03_Steady_operation_simulation_and_experiment.csv 04_Table_2_Selected_operating_points_to_analyse_the_HTHP.png 05_Figure_2_Comparison_of_simulation_and_experiments_steady_chiller.png 06_Figure_3_Comparison_of_simulation_and_experiments_steady_HTHP.png 07_Transient_Operation_simulation_and_experiments.csv 08_Figure_4_HP_comp_speed_storage_temperatures_simulation_and_experiments_transient.png 09_Medium_pressure_variation_steady.csv 10_Figure_5_Medium_pressure_variation_steady.png 11_Medium_pressure_variation_transient.csv 12_Figure_6_Medium_pressure_variation_transient.png ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: Common ----------------------------------------- Nomenclature 1CH…13CH State point chiller 1HP…13HP State point heat pump AZ Performance factor CH Chiller CIP Cleaning-in-Place System COMP/KOMP Compressor CON Condenser COP Coefficient of Performance DESUP Desuperheater EXV Electric expansion valve FI Frequency inverter h Specific enthalpy [kJ/kg] HP/HD High pressure HTWP/HP High-temperature heat pump in Inlet LP/ND Low pressure exp experimentally MP/MD medium pressure n Rotational speed [rpm] NH3 Ammonia out Outlet p Pressure[bar] P Electric power consumption [kW] Q_dot Heating/cooling capacity [kW] ρ Density (kg/m^3) rec Receiver ref Refrigerant sat Saturated SI Heat sink sim Simulation SO Heat source Stor Thermal storage sub Subcooling SUBC Subcooler sys System t Temperature [°C] tau Time V_dot Volume flow [m^3/h] ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 03_Steady_operation_simulation_and_experiment.csv ----------------------------------------- The file lists the steady operating points used as input to the simulation model, experimental results and results of the simulation model. The data corresponds to the operating points in table 2 and to the comparison of simulation and measured data in figure 2 and figure 3. Please note that comma (,) is used as decimal separator for these datasets. The file is structured with 22 colums: t_CH,SO,in (Evaporator water inlet temperature), [°C] t_CH,SO,out (Evaporator water outlet temperature), [°C] V_dot_CH,SO,in (Volume flow rate of water through the evaporator), [m^3/h] t_HP,SI,in (Heat pump sink inlet temperature), [°C] n_HP (Heat pump compressor speed), [rpm] V_dot_HP,SI,DESUP,in (Volumetric flow rate of water through the desuperheater), [m^3/h] p_CH,2 (Pressure level state point 2, i.e. Medium pressure level), [bar] dT_sub,HP,7 (Subcooling at state point 7), [K] n_CH,exp (Chiller compressor speed, measured value), [rpm] n_CH,sim (Chiller compressor speed, simulation result), [rpm] P_CH,exp (Chiller compressor power consumption, measured value), [kW] P_CH,sim (Chiller compressor power consumption, simulation result), [kW] COP_CH,exp (COP of the chiller, measured value, see Eq.7), [-] COP_CH,sim (COP of the chiller, simulation result, see Eq.7), [-] Q_dot_h,HP,exp (Heat pump heating capacity, measured value), [kW] Q_dot_h,HP,sim (Heat pump heating capacity, simulation result), [kW] P_HP,exp (Heat pump compressor power consumption, measured value), [kW] P_HP,sim (Heat pump compressor power consumption, simulation result), [kW] COP_h,HP,exp (COP of the heat pump, measured value, see Eq.8), [-] COP_h,HP,sim (COP of the heat pump, simulation result, see Eq.8), [-] COP_sys,exp (COP of the system, measured value, see Eq.9), [-] COP_sys,sim (COP of the system, simulation result, see Eq.9), [-] ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 07_Transient_Operation_simulation_and_experiments.csv ----------------------------------------- The file lists the measured values and simulations results for transient operation of the chiller, heat pump, thermal storage and CIP system. The data replicates the results shown in figure 4. Please note that comma (,) is used as decimal separator for these datasets. The file is structured with 11 colums: Time (Time), [s] n_HP,exp (Heat pump compressor speed, measured value), [rpm] n_HP,sim (Heat pump compressor speed, simulation result), [rpm] t_CIP,stor,4,exp (Temperature of thermal storage, level 4, measured value), [°C] t_CIP,stor,4,sim (Temperature of thermal storage, level 4, simulation result), [°C] t_CIP,stor,3,exp (Temperature of thermal storage, level 3, measured value), [°C] t_CIP,stor,3,sim (Temperature of thermal storage, level 3, simulation result), [°C] t_CIP,stor,2,exp (Temperature of thermal storage, level 2, measured value), [°C] t_CIP,stor,2,sim (Temperature of thermal storage, level 2, simulation result), [°C] t_CIP,stor,1,exp (Temperature of thermal storage, level 1, measured value), [°C] t_CIP,stor,1,sim (Temperature of thermal storage, level 1, simulation result), [°C] ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 09_Medium_pressure_variation_steady.csv ----------------------------------------- The file lists the simulation results for the influence of the medium pressure level in steady operation. The data replicates the results shown in figure 5. Please note that comma (,) is used as decimal separator for these datasets. The file is structured with 5 colums: p_CH,2 (Pressure level state point 2, i.e. Medium pressure level), [bar] Q_dot_0,CH,sim (Chiller cooling capacity, simulation result), [kW] n_HP,sim (Heat pump compressor speed, simulation result), [rpm] Q_dot_h,HP,sim (Heat pump heating capacity, simulation result), [kW] n_CH,sim (Chiller compressor speed, simulation result), [rpm] ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 11_Medium_pressure_variation_transient.csv ----------------------------------------- The file lists the simulation results for the influence of the medium pressure level in transient operation (charging the thermal storage). The data replicates the results shown in figure 6. Please note that comma (,) is used as decimal separator for these datasets. The file is structured with 5 colums: p_CH,2 (Pressure level state point 2, i.e. Medium pressure level), [bar] Q_dot_CIP,sim (capacity of the CIP system i.e. load on the TES), [kW] AZ_CH (Performance factor of the chiller, see Eq.10), [-] AZ_HP (Performance factor of the heat pump, see Eq.11), [-] AZ_sys (Performance factor of the system, see Eq.12), [-] tau_load (time to load the thermal energy storage), [min] -------------------------- SHARING/ACCESS INFORMATION -------------------------- Use citation as recommended by the repository for use of this dataset. See repository for license type.