Energy consumption of cold climate heat pumps in different climates – Comparison of single-stage and two-stage systems

Gschwend, Andreas; Menzi, Tobias; Caskey, Stephen L.; Groll, Eckhard A.; Bertsch, Stefan S.

doi:10.1016/j.ijrefrig.2015.10.003

Cited by 19 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A GSHP does not use fossil fuel to operate its cooling/heating cycles, and energy can be conserved by utilizing a steady supply of geothermal energy. Furthermore, the geothermal energy is unaffected by the outdoor air temperature, and GSHP boasts a COP that is more than three times higher than that of an general air source heat pump (ASHP), which loses efficiency during winter due to low outdoor air temperature [89,90]. Figure 18 shows the primary energy consumptions and energy savings contributions when we applied the technologies of 15 cases to Incheon.…”

Section: Analysis Of the Primary Energy Consumptions In Renewable Enementioning

confidence: 99%

Analysis of Energy Saving Potential in High-Performance Building Technologies under Korean Climatic Conditions

2018

View full text Add to dashboard Cite

This study aims to suggest a basis for the selection of technologies for developing high-performance buildings to reduce energy consumption and greenhouse gas emissions. Energy-saving technologies comprising 15 cases were categorized into passive, active, and renewable energy systems. EnergyPlus v8.8.0 was used to analyze the contribution of each technology in reducing the primary energy consumptions and CO 2 emissions in the Korean climate. The primary energy consumptions of the base model were 464.1 and 485.1 kWh/m 2 a in the Incheon and Jeju region, respectively, and the CO 2 emissions were 83.4 and 87.4 kgCO 2 /m 2 a, respectively. Each technology (cases 1-15) provided different energy-saving contributions in the Korean climate depending on their characteristics. The heating, cooling, and other energy-saving contributions of each technology indicate that their saving rates can be used when selecting suitable technologies during the cooling and heating seasons. Case 15 (active chilled beam with dedicated outdoor air system + ground source heat pump) showed the highest energy saving rate. In case 15, the Incheon and Jeju models were reduced by 189.4 (59.2%) and 206.2 kWh/m 2 a (57.4%) compared to the base case, respectively, and the CO 2 emissions were reduced by up to 32.7 (60.8%) and 35.6 kgCO 2 /m 2 a (59.3%), respectively.

show abstract

Section: Analysis Of the Primary Energy Consumptions In Renewable Enementioning

confidence: 99%

Analysis of Energy Saving Potential in High-Performance Building Technologies under Korean Climatic Conditions

2018

View full text Add to dashboard Cite

show abstract

“…Replacement cost for 𝑖th transformer as a gas furnace or resistive heating for deployments in cold climates [21]. However, recent advances in heat pump technology make them a viable solution for low temperature regions [17,45].…”

Section: Introductionmentioning

confidence: 99%

Equitable Network-Aware Decarbonization of Residential Heating at City Scale

Lechowicz,

Bashir,

Wamburu

et al. 2023

Preprint

View full text Add to dashboard Cite

Residential heating, primarily powered by natural gas, accounts for a significant portion of residential sector energy use and carbon emissions in many parts of the world. Hence, there is a push towards decarbonizing residential heating by transitioning to energyefficient heat pumps powered by an increasingly greener and less carbon-intensive electric grid. However, such a transition will add additional load to the electric grid triggering infrastructure upgrades, and subsequently erode the customer base using the gas distribution network. Utilities want to guide these transition efforts to ensure a phased decommissioning of the gas network and deferred electric grid infrastructure upgrades while achieving carbon reduction goals. To facilitate such a transition, we present a network-aware optimization framework for decarbonizing residential heating at city scale with an objective to maximize carbon reduction under budgetary constraints. Our approach operates on a graph representation of the gas network topology to compute the cost of transitioning and select neighborhoods for transition. We further extend our approach to explicitly incorporate equity and ensure an equitable distribution of benefits across different socioeconomic groups. We apply our framework to a city in the New England region of the U.S., using real-world gas usage, electric usage, and grid infrastructure data. We show that our networkaware strategy achieves 55% higher carbon reductions than prior network-oblivious work under the same budget. Our equity-aware strategy achieves an equitable outcome while preserving the carbon reduction benefits of the network-aware strategy.

show abstract

“…The heat pump (HP) is undoubtedly one of the most promising heating technologies for energy-efficient buildings. This technology, in combination with renewable energy sources, waste heat and district heat, enables a considerable reduction in the primary energy consumption for heating [1,2]. In recent years and in many situations, HPs were also proven to be economically beneficial compared to other heating systems (HSs), especially those based on fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Thermo-economic and primary-energy-factor assessment based on the field test of an air-to-water heat pump

Poredoš

Čož

Kitanovski

et al. 2017

International Journal of Refrigeration

View full text Add to dashboard Cite

This paper presents the results of a thermo-economic and primary-energy-factor assessment based on the fieldtest results for a residential air-to-water heat pump (AWHP). The AWHP experimental setup consisted of a supervisory control and data-acquisition system, which was connected to a heat meter, an electricity meter, humidity and temperature sensors, a HP control system and a computer. Based on the experimental data, the 4-year-average seasonal performance factor was determined. This information was then applied in a thermoeconomic and primary-energy-factor (PEF) analysis. The results served for a comparison of the AWHP with eight different heating systems (HSs). The results reveal that the considered AWHP represents the most thermo-economically efficient system in terms of the average final costs for heat production. The results of the PEF analysis reveal that the HS with the AWHP under investigation can be characterized as the most efficient system.

show abstract

Energy consumption of cold climate heat pumps in different climates – Comparison of single-stage and two-stage systems

Cited by 19 publications

References 9 publications

Analysis of Energy Saving Potential in High-Performance Building Technologies under Korean Climatic Conditions

Analysis of Energy Saving Potential in High-Performance Building Technologies under Korean Climatic Conditions

Equitable Network-Aware Decarbonization of Residential Heating at City Scale

Thermo-economic and primary-energy-factor assessment based on the field test of an air-to-water heat pump

Contact Info

Product

Resources

About