Dual source heat pump, a high efficiency and cost-effective alternative for heating, cooling and DHW production

Corberán, José M.; Cazorla-Marín, Antonio; Marchante-Avellaneda, Javier; Montagud, C.

doi:10.1093/ijlct/cty008

Cited by 40 publications

(21 citation statements)

References 10 publications

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“…As described in (Corberán, et al 2018), the DSHP prototype has a better performance in cooling mode than in heating mode (up to 40% better SPF4 in the case of Amsterdam) . In the case of Athens, the SPF4 in summer operating conditions shown in Figure 3 is around a 50% higher than that of winter conditions.…”

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confidence: 90%

“…This innovative DSHP is a variable capacity (inverter compressor) reversible heat pump operating with R32 as refrigerant, with a nominal heating capacity of 8 kW and a constructive solution 'plug&play'. Further details of the heat pump design and operation can be found in (Corberán, et al 2018). Thanks to the use of this innovative heat pump and the development of appropriate control strategies, not only the seasonal performance can be optimized but also the final cost of the installation can be reduced due to a lower amount of heat exchanged with the ground source heat exchanger (GSHE), and thus the need for less boreholes, reducing the investment cost significantly.…”

Section: Introductionmentioning

confidence: 99%

“…Thanks to the use of this innovative heat pump and the development of appropriate control strategies, not only the seasonal performance can be optimized but also the final cost of the installation can be reduced due to a lower amount of heat exchanged with the ground source heat exchanger (GSHE), and thus the need for less boreholes, reducing the investment cost significantly. This was highlighted in (Corberán, et al 2018), where a first energy assessment was carried out for an office building located in the Netherlands. Results proved that the DSHP system would be able to reach a similar efficiency than the same unit operating as a GSHP, with half the ground source heat exchanger area needed, leading to a reduction in the investment cost up to 30%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Seasonal performance assessment of a dual source heat pump system for heating, cooling and domestic hot water production

Cazorla-Marín¹,

Montagud²,

Corberán³

et al. 2018

Proceedings of the IGSHPA Research Track 2018

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In order to contribute to a global CO 2 emissions reduction in 2020, the increase in the use of highly efficient heat pumps for heating, cooling and domestic hot water production in buildings is very recommendable. In this direction, Ground Source Heat Pump (GSHP) systems are generally recognized as one of the most energy-efficient compared to air source heat pump systems. However, this strongly depends on the temperature evolution of the air and the ground during the year, which also depends on the geographical location of the system. Therefore, an optimal system from the energy point of view apparently would be the one that is able to switch from one source to the other in order to operate the heat pump with the highest efficiency. In this context, a new Dual Source Heat Pump (DSHP) unit for heating, cooling and production of domestic hot water, was developed and manufactured in the framework of a H2020 European project called GEOT€CH (Geothermal Technology for €conomic Cooling and Heating

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confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal performance assessment of a dual source heat pump system for heating, cooling and domestic hot water production

Cazorla-Marín¹,

Montagud²,

Corberán³

et al. 2018

Proceedings of the IGSHPA Research Track 2018

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“…Recently, a double source heat pump for heating, cooling and domestic hot water production was investigated in the framework of a H2020 European project named Geot€ch (2018); in this case, the control system of the heat pump selects the most favourable source or sink between air or ground. Ruiz-Calvo et al (2017) and Corberán et al (2018) analysed the thermal performance of that dual source heat pump in an office building in the Netherlands.…”

Section: Introductionmentioning

confidence: 99%

Double source heat pump: A case study

Zarrella¹,

Zecchin²,

Pasquier³

et al. 2018

Proceedings of the IGSHPA Research Track 2018

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The design of a Ground Source Heat Pump (GSHP) system is critical because design choices affect the system's energy performance and operating conditions. If the thermal load profile on the ground side is unbalanced the ground temperature will change throughout the time and, consequently, also the energy efficiency of the heat pump. This phenomenon is known as "ground thermal drift". A possible solution to avoid this inconvenience is the adoption of a hybrid system. In this work a double source heat pump is investigated, i.e. the heat pump can use air or ground as heat source or heat sink. The case study is an office building located in the city of Padova (Italy). The building load profile is cooling dominant and a thermal drift can be observed in the monitoring records. A new water-to-water heat pump coupled to the boreholes and also to an air-cooled condenser was recently installed in order to tackle the thermal drift of the ground.Detailed computer simulations of the system were carried out via EnergyPlus software to investigate the energy performance of the system and the control strategy for switching between the heat sources (air or ground). The study shows the advantages of the double source heat pump.

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“…This is justified because the building characteristic response time is significantly larger than one hour, and the HVAC equipment response is generally much faster than one hour. Therefore, it is generally acceptable to combine a dynamic model of the building with static or quasi-static models of HVAC equipment [16,17].HVAC equipment models to be implemented in simulation programs usually requires the regression of data given by the manufacturer in either tabulated of graphical form [18]. These are the most widespread equipment models in simulation programs like TRNSYS [19] or .…”

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confidence: 99%

Analysis of the Operation of an Aerothermal Heat Pump in a Residential Building Using Building Information Modelling

Torregrosa-Jaime¹,

González²,

Martínez

et al. 2018

Energies

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Heating, cooling and domestic hot water (DHW) are responsible for the largest share of energy use in residential buildings in Spain and play an important role in the implementation of nearly zero-energy buildings (NZEB). Building Information Modelling (BIM) is expected to promote more efficient buildings through evaluation of different design options. BIM can be used as a platform from which to gather information that can be conveyed to energy efficiency simulation tools. The objective of this paper was to implement the model of a reversible air-to-water heat pump in EnergyPlus 8.9. This model was employed to analyze the performance of an aerothermal heat pump system (B) in a residential building under different Spanish climates compared to a conventional Heating, Ventilating and Air Conditioning (HVAC) system (A). Significant primary energy savings were achieved with system B compared to system A. These energy savings were higher in climates with a significant heating demand such as Madrid (27.4%) and Burgos (33.6%), and in cities with a mild climate such as Barcelona (37%). The residential building studied in this work was classified as Class A according to the CO 2 emissions scale when using the aerothermal heat pump system, and as Class B when using the conventional HVAC system.The EU's recommendation on guidelines for the promotion of NZEB [5]provides benchmark ranges of primary energy use (kWh/m 2 per year) for the different EU climatic zones [6]. Characterization of climate zones can be used to guide the design of NZEB by suggesting the suitability of certain technologies to certain climatic zones [7].In Spain, 93% of the installed aerothermal heat pumps that meet the requirements established by Directive 2009/28/EC are located in climatic zones characterized by mild outdoor dry-bulb temperatures. They are almost exclusively of the air-to-air type, with a very low number of units driven by other renewable energy sources (geothermal or hydrothermal). By sectors, most heat pumps are installed in households (86%), which is also the predominant sector in terms of installed capacity (57%) [8].Current technology allows the use of aerothermal heat pumps in more severe climatic conditions. Houlihan et al. [9] studied the case of a detached single-family house located in Oslo. The implemented residential NZEB concept was the so-called all-electric solution where essentially a well-insulated envelope was heated using an air-to-water heat pump and where photovoltaic panels (PV) production was used to achieve the CO 2 balance.Authors concluded that the house could be labeled as a zero-energy building.However, geothermal heat pumps are more suitable for the climatic conditions of Northern Europe than aerothermal heat pumps. Paiho et al. [10] analyzed life-cycle costs (LCCs) of different heat pump-based NZEB concepts for a Finnish new detached house and a new apartment building. They found that for both building types, the LCCs were the smallest with the ground source heat pumps (GSHPs) followed by the air-to-water heat...

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Dual source heat pump, a high efficiency and cost-effective alternative for heating, cooling and DHW production

Cited by 40 publications

References 10 publications

Seasonal performance assessment of a dual source heat pump system for heating, cooling and domestic hot water production

Seasonal performance assessment of a dual source heat pump system for heating, cooling and domestic hot water production

Double source heat pump: A case study

Analysis of the Operation of an Aerothermal Heat Pump in a Residential Building Using Building Information Modelling

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