Energy analysis of a solar-ground source heat pump system with vertical closed-loop for heating applications

Bakırcı, Kadir; Ozyurt, O.; Çomaklı, Kemal; Çomaklı, Ömer

doi:10.1016/j.energy.2011.03.011

Cited by 144 publications

(31 citation statements)

References 54 publications

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“…Another extension of the presented approach is to allow for partial allocation, in which can the allocation is not exclusive, but also have the form of allocation both agents at the same time, but each for a certain fraction of the heating task. Finally, another interesting extension is to analyse the current approach when it is combined with electricity production by solar panels (e.g., [2,8,10,11,15]). …”

Section: Discussionmentioning

confidence: 99%

Dynamic Allocation of a Domestic Heating Task to Gas-Based and Heatpump-Based Heating Agents

Treur¹

2013

Multiagent System Technologies

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Abstract. In this paper a multi-agent model for a domestic heating task is introduced and analysed. The model includes two alternative heating agents (for gas-based heating and for heatpump-based heating), and a third allocation agent which determines the most economic allocation of the heating task to these heating agents over the days in a year. For allocation decisions it is analysed how the performance of a heatpump depends on the outdoor temperature. One method discussed is a what-if analysis method using agent-based simulation, another method is by mathematical analysis to derive more precise knowledge about the most optimal allocation choice. These methods can be used by the allocation agent to determine in a dynamic, adaptive manner per day a most economic allocation, depending on the (predicted) outdoor temperature.

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Section: Discussionmentioning

confidence: 99%

Dynamic Allocation of a Domestic Heating Task to Gas-Based and Heatpump-Based Heating Agents

Treur¹

2013

Multiagent System Technologies

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“…According to the International Energy Agency (IEA) Task 44 and Annex 38, more than 100 heat pump systems using both solar and ground heat source were examined and they have been classified into four categories, which are parallel concept, serial concept, regenerative concept and complex concept [2]. Some of them have been demonstrated by applications [3] and there are lots of studies on performance assessment utilizing hybrid systems [3][4][5][6][7][8][9][10][11][12][13]. In order to prove the feasibility compared with the conventional ground source heat pump system, Girard et al [4] showed higher performance and greater operation cost savings from the SAGHP system in 19 different locations.…”

Section: System Summarymentioning

confidence: 99%

Study on the System Design of a Solar Assisted Ground Heat Pump System Using Dynamic Simulation

Nam

et al. 2016

Energies

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Abstract:Recently, the use of hybrid systems using multiple heat sources in buildings to ensure a stable energy supply and improve the system performance has gained attention. Among them, a heat pump system using both solar and ground heat was developed and various system configurations have been introduced. However, establishing a suitable design method for the solar-assisted ground heat pump (SAGHP) system including a thermal storage tank is complicated and there are few quantitative studies on the detailed system configurations. Therefore, this study developed three SAGHP system design methods considering the design factors focused on the thermal storage tank. Using dynamic energy simulation code (TRNSYS 17), individual performance analysis models were developed and long-term quantitative analysis was carried out to suggest optimum design and operation methods. As a result, it was found that SYSTEM 2 which is a hybrid system with heat storage tank for only a solar system showed the highest average heat source temperature of 14.81˝C, which is about 11˝C higher than minimum temperature in SYSTEM 3. Furthermore, the best coefficient of performance (COP) values of heat pump and system were 5.23 and 4.32 in SYSYEM 2, using high and stable solar heat from a thermal storage tank. Moreover, this paper considered five different geographical and climatic locations and the SAGHP system worked efficiently in having high solar radiation and cool climate zones and the system COP was 4.51 in the case of Winnipeg (Canada) where the highest heating demand is required.

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“…The exergetic efficiency of the overall system was found to be 67.7% and the experimental results also showed that, if the ambient temperature is very low, the monovalent central heating operation cannot meet the heating load of the greenhouse. Bakirci et al [6] also installed an experimental system for investigating the thermal performance of a solar-ground source heat pump system in heating mode.…”

Section: Introductionmentioning

confidence: 99%

Study on the Performance of a Ground Source Heat Pump System Assisted by Solar Thermal Storage

et al. 2015

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Abstract:A ground source heat pump system (GSHPS) utilizes a relatively stable underground temperature to achieve energy-saving for heating and cooling in buildings. However, continuous long-term operation will reduce the soil temperature in winter, resulting in a decline in system performance. In this research, in order to improve the system performance of a GSHPS, a ground heat pump system integrated with solar thermal storage was developed. This solar-assisted ground heat pump system (SAGHPS) can both maintain the balance of the soil temperature effectively and achieve higher system performance than the conventional system. In this paper, in order to examine the characteristics of the system, a dynamic simulation was conducted under various conditions. The results of our case study provide specific operation data such as heat exchange rate, heat source temperature, and heat pump COP. As a result, the heat pump COP of SAGHPS was 4.7%, 9.3% higher than that of the GSHPS.

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Energy analysis of a solar-ground source heat pump system with vertical closed-loop for heating applications

Cited by 144 publications

References 54 publications

Dynamic Allocation of a Domestic Heating Task to Gas-Based and Heatpump-Based Heating Agents

Dynamic Allocation of a Domestic Heating Task to Gas-Based and Heatpump-Based Heating Agents

Study on the System Design of a Solar Assisted Ground Heat Pump System Using Dynamic Simulation

Study on the Performance of a Ground Source Heat Pump System Assisted by Solar Thermal Storage

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