Reduction in on-off operations of an air source heat pump with active thermal storage and demand response: An experimental case study

Meng, Qingguo; Ren, Xinmiao; Wang, Wenqiang; Xiong, Chengyan; Xi, Yuan; Li, Yang

doi:10.1016/j.est.2021.102401

Cited by 18 publications

(3 citation statements)

References 27 publications

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“…Heat pumps have been integrated with energy storage for different purposes. For example, Meng et al [10] showed that integrating thermal energy storage (TES) with an air source heat pump can reduce the number of on-off operations. Meng et al [11] evaluated the heating energy and economic viability of an air source heat pump with latent TES for heating.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates

et al. 2021

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With the aim of contributing to achieving the decarbonization of the energy sector, the environmental impact of an innovative system to produce heating and domestic hot water for heating demand-dominated climates is assessed is evaluated. The evaluation is conducted using the life cycle assessment (LCA) methodology and the ReCiPe and IPCC GWP indicators for the manufacturing and operation stages, and comparing the system to a reference one. Results show that the innovative system has a lower overall impact than the reference one. Moreover, a parametric study to evaluate the impact of the refrigerant is carried out, showing that the impact of the overall systems is not affected if the amount of refrigerant or the impact of refrigerant is increased.

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Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates

et al. 2021

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“…Heat pumps in China cost less than those in Europe or the United States, as low as RMB 18,000, but also have a wide cost range (Zhou et al, 2022). Heat pumps can be combined with thermal energy storage for improving overall performance and efficiency, preventing frosting, increasing self-consumption, load shifting, and participating in demand response programs (Ermel et al, 2022;Jung et al, 2017;Lin, Fan, et al, 2022;Meng et al, 2021). Well-insulated buildings themselves can act as a thermal battery depending on thermal inertia, which could combine with heat pumps to reduce electricity costs and increase selfconsumption (Fischer et al, 2015;Pinamonte et al, 2020).…”

Section: Rural Energy Use In Chinamentioning

confidence: 99%

Synergies between China's Whole County photovoltaic program and rural heat pump adoption

Hove

2023

WIREs Energy & Environment

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Electrification of heating, particularly with highly‐efficient heat pumps, is increasingly viewed as essential for reaching the targets of the Paris Climate Agreement. China has promoted replacement of dirty coal heating in rural areas. More recently China has also begun promoting distributed solar photovoltaic (PV) energy as a rural development strategy, particularly with the launch of the Whole County PV pilot program in 2021. While several studies have examined the economics of heat pump adoption, with or without solar PV, the Whole County PV program has not been specifically studied. Further, many prior studies utilize monthly average solar production or temperature ranges. This study examines the economics of heat pumps in participating counties in the Whole County PV program, employing hourly data for both PV output and ambient temperature in participating counties. The analysis shows that pairing residential heat pumps with PV in counties in Shandong, Henan, and Jiangsu would result in short economic payback periods versus gas or resistance heat, while also increasing self‐consumption of PV. The results suggest that expanding the Whole County PV program to incorporate energy efficiency and heating/cooling measures represents an economically attractive way to accelerate the rural energy transition and improve rural livelihoods. Such a policy would help accelerate the low‐carbon energy transition, reduce air pollutant emissions, and help address oversupply of midday PV output in local areas. Barriers to the approach include involvement of different government ministries, the cost of upgrading building insulation, the design of building codes, and the structure of electricity tariffs.This article is categorized under: Sustainable Energy > Solar Energy Energy and Power Systems > Electrification Cities and Transportation > Buildings

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“…Another issue involving TES is their position in the hydraulic loop, which can be either in series between the HP device and the building emission system (a passive tank), as effectively implemented in [31], or in a parallel arrangement (the so-called active storage), as in the experimental research by Meng et al [32].…”

Section: The Integration Of Heat Pump and Thermal Energy Storagementioning

confidence: 99%

Optimal Operation of Low-Capacity Heat Pump Systems for Residential Buildings through Thermal Energy Storage

et al. 2021

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The paper provides results from a hardware-in-the-loop experimental campaign on the operation of an air-source heat pump (HP) for heating a reference dwelling in Pisa, Italy. The system performances suffer from typical oversizing of heat emission devices and high water-supply temperature, resulting in HP inefficiencies, frequent on-off cycles, and relevant thermal losses on the hydronic loop. An experimentally validated HP model under different supply temperatures and part-load conditions is used to simulate the installation of a thermal storage between heat generator and emitters, in both series and parallel arrangements. Results relative to a typical residential apartment show that the presence of the thermal storage in series configuration ensures smoother heat pump operation and energy performance improvement. The number of daily on-off cycles can be reduced from 40 to 10, also saving one-third of electric energy with the same building loads. Preliminary guidelines are proposed for correctly sizing the tank in relation to the HP capacity and the average daily heating load of the building. A storage volume of about 70 L for each kilowatt of nominal heating capacity is suggested.

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Reduction in on-off operations of an air source heat pump with active thermal storage and demand response: An experimental case study

Cited by 18 publications

References 27 publications

Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates

Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates

Synergies between China's Whole County photovoltaic program and rural heat pump adoption

Optimal Operation of Low-Capacity Heat Pump Systems for Residential Buildings through Thermal Energy Storage

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