Experimental demonstration of an air-source heat pump application using an integrated phase change material storage as a desuperheater for domestic hot water generation

Emhofer, Johann; Marx, Klemens; Sporr, Andreas; Barz, Tilman; Nitsch, Birgo; Wiesflecker, Michael; Pink, Werner

doi:10.1016/j.apenergy.2021.117890

Cited by 21 publications

(4 citation statements)

References 26 publications

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“…When a power shortage/excess occurs in the electricity market, the heat controller optimizes the operation of the heat pump and maintains the indoor temperature close to the lower/upper threshold of the bound [84]. In some studies, the heat controller is integrated with thermal storage devices [85]. In many studies, water tanks are suggested as economic thermal storage for residential buildings [86].…”

Section: Residential Demand Flexibilitymentioning

confidence: 99%

Demand-Side Flexibility in Power Systems: A Survey of Residential, Industrial, Commercial, and Agricultural Sectors

Golmohamadi

2022

Sustainability

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In recent years, environmental concerns about climate change and global warming have encouraged countries to increase investment in renewable energies. As the penetration of renewable power goes up, the intermittency of the power system increases. To counterbalance the power fluctuations, demand-side flexibility is a workable solution. This paper reviews the flexibility potentials of demand sectors, including residential, industrial, commercial, and agricultural, to facilitate the integration of renewables into power systems. In the residential sector, home energy management systems and heat pumps exhibit great flexibility potential. The former can unlock the flexibility of household devices, e.g., wet appliances and lighting systems. The latter integrates the joint heat–power flexibility of heating systems into power grids. In the industrial sector, heavy industries, e.g., cement manufacturing plants, metal smelting, and oil refinery plants, are surveyed. It is discussed how energy-intensive plants can provide flexibility for energy systems. In the commercial sector, supermarket refrigerators, hotels/restaurants, and commercial parking lots of electric vehicles are pointed out. Large-scale parking lots of electric vehicles can be considered as great electrical storage not only to provide flexibility for the upstream network but also to supply the local commercial sector, e.g., shopping stores. In the agricultural sector, irrigation pumps, on-farm solar sites, and variable-frequency-drive water pumps are shown as flexible demands. The flexibility potentials of livestock farms are also surveyed.

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Section: Residential Demand Flexibilitymentioning

confidence: 99%

Demand-Side Flexibility in Power Systems: A Survey of Residential, Industrial, Commercial, and Agricultural Sectors

Golmohamadi

2022

Sustainability

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“…Latent thermal energy storage (LTES) systems can be beneficial in a wide range of energy systems including buildings [1], heat pumps [2], cold chain transport [3] or industrial waste heat [4,5]. Since there is a large variety of applications, LTES systems are developed in a variety of shapes.…”

Section: Introductionmentioning

confidence: 99%

An approximate analytical solution for the movement of the phase change front in latent thermal energy storage heat exchangers

Beyne

Tassenoy

Paepe

2023

Journal of Energy Storage

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“…The results showed increased energy savings with the novel module compared with a standard system, and significant energy savings in hot climates, whereas from an economic point of view the system is more suitable in a low-energy building in cold climates. Furthermore, a dynamic system operation and control was examined, with the novel module used as a desuperheater in the HP to generate DHW more efficiently by taking profit of the hot refrigerant at the compressor discharge in [19,20]. The PCM charging and discharging, as well as three-fluids HEX operating mode were analysed, based on several weeks of operation.…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessment of the Influence of the Design on the Performance of Novel Evaporators with Latent Energy Storage Ability

et al. 2022

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This study was carried out within the HYBUILD project, as part of the task aimed at developing novel evaporators for compact and direct integration of phase-change materials (PCM) into air-conditioning systems for efficient utilization of solar energy. To achieve this, novel evaporators were designed to contain PCM between refrigerant and heat transfer fluid (HTF) channels, allowing a three-media heat exchange mechanism. This paper experimentally assesses the influence of the configuration/arrangement of the channels on the performance of the evaporators, using three different lab-scale prototypes. Key performance indicators (KPI) relevant for thermal energy storage (TES) and heat exchangers (HEX) were used to study the influence of the design on the performance of the different designs of the novel evaporators. The results show that the change in the PCM, refrigerant, and HTF channel configuration affects the performance of the novel evaporators independently. The coefficient of performance (COP) of the refrigeration system and the energy storage density of the modules are the least affected KPIs (less than 16%), whereas the state of charge (SOC) at thermal equilibrium is the most affected KPI (about 44%). A discussion on how these effects provide unique strength for specific applications is included.

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Experimental demonstration of an air-source heat pump application using an integrated phase change material storage as a desuperheater for domestic hot water generation

Cited by 21 publications

References 26 publications

Demand-Side Flexibility in Power Systems: A Survey of Residential, Industrial, Commercial, and Agricultural Sectors

Demand-Side Flexibility in Power Systems: A Survey of Residential, Industrial, Commercial, and Agricultural Sectors

An approximate analytical solution for the movement of the phase change front in latent thermal energy storage heat exchangers

Experimental Assessment of the Influence of the Design on the Performance of Novel Evaporators with Latent Energy Storage Ability

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