A framework for assessing the technical and economic potential of shallow geothermal energy in individual and district heating systems: A case study of Slovenia

Stegnar, Gašper; Stanicic, Damir; Cesen, Matjaz; Čižman, J.; Pestotnik, Simona; Prestor, Joerg; Urbančič, A.; Merše, Stane

doi:10.1016/j.energy.2019.05.121

Cited by 34 publications

(9 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dorotic ́et al [18] propose a taxing system based on exergy destruction in heat-only boiler units, and Capone et al [19] propose a global optimization modeling approach with demand-side management for district heating customers. Several other previous papers add to these findings regarding development [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37], expansion [38][39][40][41][42][43][44], and operation improvements [45][46][47][48][49][50] of smart energy grids.…”

Section: Introductionmentioning

confidence: 79%

Fourth-Generation District Heating and Motivation Tariffs

Lund

Thorsen

Jensen³

et al. 2022

ASME Open Journal of Engineering

View full text Add to dashboard Cite

Future district heating systems and technologies—also known as fourth-generation district heating—have a potentially important role to play in the green transition of societies. The implementation of fourth-generation district heating involves adjustments in the demand side to allow for low temperature supply. In order to facilitate such changes, district heating supply companies have in recent years introduced tariffs with penalties for high return temperatures and benefits for low return temperatures. This paper describes the case of a housing community of 17 buildings in their attempts to adjust to such tariffs as an integrated part of connecting to district heating. Replacing domestic hot water tanks with instantaneous heat exchangers and introducing smart meters resulted in abilities to lower the return temperature from around 40 °C to around 30 °C. However, the current design of the motivation tariffs does not yet fully compensate the consumers because the supply company provides unnecessarily high supply temperatures. Based on such efforts, this paper discusses the fairness and effectiveness of the tariffs and provides recommendations for improving them.

show abstract

Section: Introductionmentioning

confidence: 79%

Fourth-Generation District Heating and Motivation Tariffs

Lund

Thorsen

Jensen³

et al. 2022

ASME Open Journal of Engineering

View full text Add to dashboard Cite

show abstract

“…Depending on the heat source used, heat pumps are classified as ground source heat pumps, hydrothermal heat pumps, or aerothermal heat pumps [7]. Depending on the type of heat pump, the efficiency and operating parameters of the heat pump also change [31].…”

Section: Individual Heatingmentioning

confidence: 99%

“…Heat pumps have been evaluated as one of the heat supply technologies on the way to sustainable heat supply, both for use in individual heat supply solutions and in district heating systems [31]. Regardless of whether heat pumps are used as individual heat supply solutions or integrated into district heating networks, they play an important role in decarbonisation [7].…”

Section: Individual Heatingmentioning

confidence: 99%

“…With the exception of Switzerland and Sweden, the use of geothermal energy sources to reduce greenhouse gas emissions is still low, mainly because heat pumps have higher installation costs compared to other technological solutions [31]. It is estimated that smaller heat pump technologies may incur higher operating costs, but the introduction of large heat pumps may require additional capital investment, such as building modernisation or boiler replacement [7].…”

Section: Individual Heatingmentioning

confidence: 99%

See 1 more Smart Citation

The Contradictions between District and Individual Heating towards Green Deal Targets

2021

View full text Add to dashboard Cite

The blind spot can be defined as the area around the vehicle where the driver cannot see through the mirrors without turning their head or taking their eyes off the road. Similar blind spots occur in energy policy. Blind spots can occur in forecasting economic development and creating policy documents. This study uncovers potential blind spots and controversies in the sustainability assessment of energy supply technologies. A composite sustainability index was constructed to compare district heating with four individual heating technologies—wood pellet boilers, natural gas boilers, solar collectors, and heat pumps. A total of 19 indicators were selected and grouped into four dimensions of sustainability—technical, environmental, economic, and social. The results reveal that district heating can compete with individual heating technologies in all dimensions of sustainability; however, a possible blind spot lies in evaluating environmental performance indicators of the different heating technologies. This study provides a novel decision-making tool that policy-makers could use to identify and avoid potential blind spots and uncertainties in energy policy at an early stage.

show abstract

“…Geothermal energy is recognized as a valuable resource having a variety of uses: from electricity generation (through geothermal power plants or through cogeneration systems) [1] and space heating and cooling (using the heat pumps) to direct use in a wide range of applications in areas such as balneotherapy [2,3], agriculture, industry, swimming pool heating, and in individual and district heating systems [4,5]. While harnessing geothermal energy for electricity production is mainly related to specific tectonic regions, its direct use is more common.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

et al. 2021

View full text Add to dashboard Cite

The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come from different types of reservoirs having different temperatures and chemical compositions. At the first site, a geothermal spring with a temperature of 20.5 °C is considered for heat pump utilization, while at the second site, a geothermal well with a temperature of 54 °C is suitable for direct use. The calculated thermal power, which can be obtained from geothermal energy is in the range of 300 to 950 kW. The development concept was proposed with an architectural design to enable sustainable energy efficient development of wellness and spa/medical facilities that can be supported by local authorities. The resulting energy heating needs for different scenarios were 16–105 kW, which can be met in full by the use of geothermal energy.

show abstract

A framework for assessing the technical and economic potential of shallow geothermal energy in individual and district heating systems: A case study of Slovenia

Cited by 34 publications

References 39 publications

Fourth-Generation District Heating and Motivation Tariffs

Fourth-Generation District Heating and Motivation Tariffs

The Contradictions between District and Individual Heating towards Green Deal Targets

Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

Contact Info

Product

Resources

About