Optimal Connection of Heat Pump and Solar Buffer Storage under Different Boundary Conditions

Glembin, Jens; Büttner, Christoph; Steinweg, Jan; Rockendorf, Gunter

doi:10.1016/j.egypro.2016.06.190

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…It was found that as the distance increases between the DHW sensor and the SH zone, the number of starts per year decreases. In [28,40], it was stated that the DHW sensor has no influence on the performance of the heat pump, yet the higher the position the better. Moreover, the author stated that sensors at a lower position could help in decreasing the set temperature while maintaining comfort.…”

Section: Sensors Positionmentioning

confidence: 99%

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Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

2018

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There is a continuous growth of heat pump installations in residential buildings in Germany. The heat pumps are not only used for space heating and domestic hot water consumption but also to offer flexibility to the grid. The high coefficient of performance and the low cost of heat storages made the heat pumps one of the optimal candidates for the power to heat applications. Thus, several questions are raised about the optimal integration and control of heat pump system with buffer storages to maximize its operation efficiency and minimize the operation costs. In this paper, an experimental investigation is performed to study the performance of a ground source heat pump (GSHP) with a combi-storage under several configurations and control factors. The experiments were performed on an innovative modular testbed that is capable of emulating a ground source to provide the heat pump with different temperature levels at different times of the day. Moreover, it can emulate the different building loads such as the space heating load and the domestic hot water consumption in real-time. The data gathered from the testbed and different experimental studies were used to develop a simulation model based on Modelica that can accurately simulate the dynamics of a GSHP in a building. The model was validated based on different metrics. Energetically, the difference between the developed model and the measured values was only 3% and 4% for the heat generation and electricity consumption, respectively.

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Section: Sensors Positionmentioning

confidence: 99%

“…Yet, this exposes the model to inevitable uncertainties. On the building level, dynamic systems simulation programs are used such as TRNSYS or Modelica-based software as Simulation X [28]. These programs can detail the dynamics of the systems, yet as discussed in [29], their calibration is complicated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

2018

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“…It was found that as the DHW sensors distances from the SH zone, the lower is the number of starts per year. In [26,34], it was stated that the DHW sensor has no influence on the performance of the heat pump, yet the higher the position the better. Moreover, the author stated that sensors at a lower position can help in decreasing the set temperature while maintaining comfort.…”

Section: Sensors Positionmentioning

confidence: 99%

“…Yet, this exposes the model to inevitable uncertainties. On the building level, dynamic systems simulation programs are used such as TRNSYS or Modelica-based software as Simulation X [26]. These programs can detail the dynamics of the systems, yet as discussed in [27], calibration is rather complicated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

El-Baz¹,

Tzscheutschler²,

Wagner³

2018

Preprint

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There is a continuous growth of heat pump installations in residential buildings in Germany. The heat pumps were not only used for space heating and domestic hot water consumption but also to offer flexibility to the grid. the high coefficient of performance and the low cost of heat storages made the heat pumps an optimal candidate for the power to heat applications. Thus, several questions are raised about the optimal integration and control of the heat pump system with buffer storages to maximize its operation efficiency and minimize the operation costs. In this paper, an experimental investigation is performed to study the performance of a ground source heat pump (GSHP) with a combi-storage under several configurations and control factors. The experiments were performed on an innovative modular testbed that is capable of emulating a ground source to provide the heat pump with different temperature levels at different times of the day. Moreover, it can emulate the different building loads such as the space heating load and the domestic hot water consumption in real-time. The data gathered from the testbed and different experimental studies were used to develop a simulation model based on Modelica that can accurately simulate the dynamics of a GSHP in a building. The model was validated based on different metrics. Energetically, the difference between the developed model and the measured values was only 3.08\% and 4.18\% for the heat generation and electricity consumption, respectively.

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Model and simulation of temperature changes in the buffer tank cooperating with the greenhouse heating system

Kurpaska

Krakowiak-Bal

Religa

2021

J. Phys.: Conf. Ser.

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The paper presents a mathematical model describing the water temperature change in a buffer tank. The buffer tank is an integral part of modern greenhouse heating systems. The model includes heat fluxes from the heating boiler, heat fluxes transferred to the greenhouse interior and heat losses from the system (tank, pipes connecting the tank with the heating system). The differential method was used to determine the temperature value in the tank. Verification tests carried out in a real facility showed that the mean square error is 0.14K.

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Optimal Connection of Heat Pump and Solar Buffer Storage under Different Boundary Conditions

Cited by 3 publications

References 4 publications

Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

Experimental Study and Modeling of Ground-Source Heat Pumps with Combi-Storage in Buildings

Model and simulation of temperature changes in the buffer tank cooperating with the greenhouse heating system

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