Thermoeconomic analysis of ground-source heat pump systems

Kwak, Ho‐Young; You, Yungpil; Oh, Si-Doek; Jang, Ha-Na

doi:10.1002/er.3024

Cited by 16 publications

(12 citation statements)

References 33 publications

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“…In the future, these correlations could be useful in geothermal system design optimization. For example, one could be interested in minimizing the total cost of a project that would include the purchase cost of a heat pump and the recurrent cost of operation of the heat pump (related to the COP) . Similar optimization work has been performed extensively for heat exchanger design .…”

Section: Discussionmentioning

confidence: 99%

Correlations for cost of ground-source heat pumps and for the effect of temperature on their performance

Croteau

Gosselin

2014

Int. J. Energy Res.

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SUMMARYGround source heat pump systems are becoming more and more popular, even though their high initial cost is an obstacle to their wider penetration of the heating and cooling market. The purchase of the heat pump itself is one of the dominant costs, and the heat pump selection also influences the operation costs through its coefficient of performance (COP) value. However, few studies are available on this topic. Based on 23 water-water heat pump models available on the market, a correlation was developed to estimate their purchase cost as a function of the nominal cooling load of the heat pump. These heat pumps can be used in geothermal applications as well as in other heating, ventilating, air conditioning and refrigeration (HVAC&R) systems. The correlation is valid for a nominal cooling load between 20 and 841 kW. The nominal COP of the heat pumps was found to have virtually no effect on their purchase costs. Also, two correlations were developed to relate variations of cooling power and COP to the temperature levels on both sides of the heat pump. The heating mode is also considered. The correlations are useful to estimate the required nominal size of a heat pump given design operating conditions and to optimize ground source heat pump systems from a techno-economical standpoint.

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Section: Discussionmentioning

confidence: 99%

Correlations for cost of ground-source heat pumps and for the effect of temperature on their performance

Croteau

Gosselin

2014

Int. J. Energy Res.

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“…As it was said before, on one side, full systems can be studied, such as solar energy based heating systems [16], HVAC systems [17], air conditioning systems [18,19], absorption cooling systems [20], etc. On the other side, generating and intermediate engines can be analyzed, namely micro-trigeneration machines [21], ground and air source heat pumps [22][23][24], heat exchangers [25], thermal energy storage modules [26] and so on.…”

Section: Exergoeconomic Analysismentioning

confidence: 99%

New Exergetic Methodology to Promote Improvements in nZEB

Picallo-Perez¹,

Betanzos²,

Jose-MariaSala-Lizarraga³

2018

Application of Exergy

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The benefits obtained through the application of exergy concept in buildings are currently known, since they contribute to the proper use of energy as well as to a better adequacy of the different energy qualities taking part in a facility. Besides, an exergy analysis supports the identification of both the economic and environmental cost formation in every phase of the energy transformation chain. Those type of studies are known as exergoeconomic and exergoenvironmental analyses. In this work, a nearly zero energy buildings (nZEB) single-family dwelling is analyzed, where heating and DHW exergy demands are hourly calculated. A full exergetic analysis of its building envelope and thermal facility is carried out and exergoeconomic and exergoenvironmental analyses are applied. The aim of this study is to show the enormous possibilities for the energy efficiency improvement that still exist, which cannot be appreciated through a common energetic analysis (being the facility's energetic efficiency of 81% and exergetic one of 13%). In addition, the results of this study indicate the location and the correct assessment of the real inefficiencies.

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“…analysis of ground-source heat pump systems [25]. The lost cost flow rate due to the entropy generation appears as consumed cost in the evaporator; on the other hand, it appears as production cost in other components.…”

Section: Application Of Exergymentioning

confidence: 99%

Exergetic Costs for Thermal Systems

Kwak¹,

Uysal²

2018

Application of Exergy

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Exergy costing to estimate the unit cost of products from various power plants and refrigeration system is discussed based on modified-productive structure analysis (MOPSA) method. MOPSA method provides explicit equations from which quick estimation of the unit cost of products produced in various power plants is possible. The unit cost of electricity generated by the gas-turbine power plant is proportional to the fuel cost and inversely proportional to the exergetic efficiency of the plant and is affected by the ratio of the monetary flow rate of non-fuel items to the monetary flow rate of fuel. On the other hand, the unit cost of electricity from the organic Rankine cycle power plant with heat source as fuel is proportional to the unit cost of heat and the ratio of the monetary flow rate of non-fuel items to the generated electric power, independently. For refrigeration system, the unit cost of heat is proportional to the consumed electricity and inversely proportional to the coefficient of performance of the system, and is affected by the ratio of the monetary flow rate of non-fuel items to the monetary flow rate of consumed electricity.

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Thermoeconomic analysis of ground-source heat pump systems

Cited by 16 publications

References 33 publications

Correlations for cost of ground-source heat pumps and for the effect of temperature on their performance

Correlations for cost of ground-source heat pumps and for the effect of temperature on their performance

New Exergetic Methodology to Promote Improvements in nZEB

Exergetic Costs for Thermal Systems

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