Economic Analysis of Integrated Ground Source Heat Pumps on a Shared Ground Loop

Shin, Jeong Soo; Kim, Sean Hay; Park, Jong Woo

doi:10.3390/en13112928

Cited by 5 publications

(5 citation statements)

References 15 publications

(25 reference statements)

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“…The investment costs reduce on the basis that a single larger ground loop will not cost as much as two separate GSHPs 3. Optimization of the heat pump (i.e., operational sequencing) will leads to more energy savings [45] and minimize the boreholes depletion.…”

Section: Geothermalmentioning

confidence: 99%

Recent Progress in District Heating with Emphasis on Low-Temperature Systems

Khosravy¹

2022

Geothermal Energy

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District heating plays an important role in future sustainable energy system by integrating any available heat source, including waste heat and renewable heat sources such as geothermal or solar heat. The low-temperature district heating system is the latest generation of district heating. It was introduced less than ten years ago in adaption to the need for lower heat demand of energy-efficient buildings. The low-temperature district heating system provides an infrastructure for a higher share of renewable energy sources while reduces heat loss in pipes. Several small-scale projects were commissioned since the introduction of the technology, and many existing district heating systems are in the process of adaptation. The recent progress of low-temperature district heating systems has been discussed here. First, the fundamental knowledge that is required to understand the main advantages of a low-temperature district heating system was explained briefly. Then the most recent and important projects were discussed with emphasis on solar and geothermal district heating systems. The results of case studies show that the low-temperature solution has the lowest capital costs and has a unique position to be the primary source for building heating demand.

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Section: Geothermalmentioning

confidence: 99%

Recent Progress in District Heating with Emphasis on Low-Temperature Systems

Khosravy¹

2022

Geothermal Energy

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“…With the development of heat pump technology, water loop heat pump systems began to be modified. Heat pumps were connected to the loop using various lower heat sources, such as ground [6,7,8], air and surface and deep water [9]. Such systems allow limiting the functions to heating or cooling only, as presented in Fig.…”

Section: Offices and Services 100mentioning

confidence: 99%

Systems of heat pumps in water loop

Rusowicz

Dybiński

Szczęśniak

et al. 2022

iboa

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The paper presents various solutions for water loop heat pump systems. Systems with heat pumps connected by a water loop are an economically attractive proposition. They allow significant savings. In the winter months, they achieve up to 60% energy savings for shopping centers. On an annual basis, they reach up to 23%. It is also important to note the possibility of additional use of "free-cooling" cooling, which allows a significant reduction in operating costs or supplementing with solar panels as an additional heat source. In industrial systems, the potential of water loop heat pump systems allows for significant energy savings and positive environmental aspects.

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“…The authors realize that insufficient energy (and financial) savings occur in the winter season; therefore, they investigate in another work Shin et al [148] the electricity savings and economic benefits of including an outdoor air reset control (OARC) to regulate the production of domestic hot water according to the outdoor temperature. Further, they include a thermal storage tank for the domestic hot water and test the system functioning in sequential mode, alternating the functioning of the HP for air conditioning and the HP for hot water.…”

Section: Advanced and Integrated Solutionsmentioning

confidence: 99%

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

2021

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Geothermal heat pumps have a widespread diffusion as they are able to deliver relatively higher energy output than other systems for building air-conditioning. The exploitation of low-enthalpy geothermal energy, however, presents crucial sustainability issues. This review investigates the primary forms of the environmental impact of geothermal heat pumps and the strategies for their mitigation. As life-cycle analyses shows that the highest impacts arise from installation and operation stages, most optimization studies focus on system thermodynamics, aiming at maximizing the energy performance via the optimization in the design of the different components interacting with the ground and serviced building. There are environmental studies of great relevance that investigate how the climate and ground properties affect the system sustainability and map the most suitable location for geothermal exploitation. Based on this review, ground-source heat pumps are a promising technology for the decarbonization of the building sector. However, a sustainable design of such systems is more complex than conventional air-conditioning systems, and it needs a holistic and multi-disciplinary approach to include the broad environmental boundaries to fully understand the environmental consequences of their operation.

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Economic Analysis of Integrated Ground Source Heat Pumps on a Shared Ground Loop

Cited by 5 publications

References 15 publications

Recent Progress in District Heating with Emphasis on Low-Temperature Systems

Recent Progress in District Heating with Emphasis on Low-Temperature Systems

Systems of heat pumps in water loop

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

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