heat pump energy storage defrosting
Experimental investigation on the multi-mode heat discharge process of a PCM heat exchanger during TES based reverse cycle defrosting …
The multi-energy coupled heat storage solar heat pump is the future research direction of the application of phase change heat storage technology in the solar heat pump. It is pointed out that the future development trend is to improve the thermal conductivity of phase change materials, optimize the structure, and strengthen the heat …
An experimental study on energy-storage based defrosting performance of an air source heat pump system with a micro-channel heat …
In this study, the energy-storage based heating and defrosting performances of an air source heat pump system with a micro-channel heat exchanger as its outdoor coil were experimentally investigated. The impacts of energy storage on system heating and defrosting performances were quantitatively analyzed and discussed with …
Experimental analysis of defrosting and heating performance of a solar‐assisted heat pump integrated phase change energy storage …
Thermal energy storage (TES) based reverse cycle defrosting method has been proposed to solve the defrosting problem for cascade air source heat pumps (CASHPs), with the benefits of shortening ...
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting …
Most related items These are the items that most often cite the same works as this one and are cited by the same works as this one. Song, Mengjie & Deng, Shiming & Dang, Chaobin & Mao, Ning & Wang, Zhihua, 2018. "Review on improvement for air source heat pump units during frosting and defrosting," Applied Energy, Elsevier, vol. 211(C), pages 1150 …
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting …
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting Bowen Yang, Jiankai Dong, Long Zhang, Mengjie Song, Yiqiang Jiang and Shiming Deng Applied Energy, 2019, vol. 238, issue C, 303-310 Abstract: In recent decades, multi-split air source heat pump (M-ASHP) unit has been widely used …
Review on heat pump (HP) coupled with phase change material (PCM) for thermal energy storage …
To ensure adequate heat while defrosting, latent heat defrosting based on PCM energy storage is unquestionably a better option. In addition, to improve the defrost performance of the ASHP, the heat transfer performance of the PCM unit is a very important factor [90] .
A comparative study on system performances of multi-split air source heat pump with different energy accumulators and storage …
For fin-tube energy accumulator using serial energy storage method, using parallel energy storage method can shorten the energy storage period from 33 to 6 min. In addition, compared to serial energy storage method, using parallel energy storage method may significantly reduce the heating capacity, input power and heating COP of …
An experimental study on improving defrosting performances of air source heat pump …
ABSTRACT A novel hot-gas bypass defrosting method for an air source heat pump (ASHP) unit has been presented in a previous work, which can satisfy defrosting and uninterrupted heating simultaneously. To further improve the novel hot-gas bypass defrosting performances, the effects of electronic expansion valve (EEV) on …
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting …
The experimental results showed that the multi-ASHP unit employing fin-tube energy accumulator with serial energy storage method can achieve the longest heating period, which was 3.3%, 13.4%, and ...
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting …
Semantic Scholar extracted view of "Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting" by Bowen Yang et al. DOI: 10.1016/J.APENERGY.2019.01.079 Corpus ID: 115876630 Heating and energy
Performance investigation of a novel frost-free air-source heat pump water heater combined with energy storage and dehumidification …
Although several defrosting methods have been reported, the frosting and defrosting processes reduced energy efficiency and resulted in, in some cases, heat pump breakdown. To solve this problem, a novel frost-free air-source heat pump water heater (ASHPWH) system has been developed, which coupled with an extra heat exchanger …
Operation mode performance and optimization of a novel coupled air and ground source heat pump system with energy storage…
This paper takes a hotel building energy supply system as an example to study the feasibility of a coupled air and ground source heat pump system with energy storage. The design intention of the proposed system was to add an air source heat pump (ASHP) and a water source heat pump (WSHP) as auxiliary heat sources to undertake …
Thermal energy storage based (TES-based) reverse cycle defrosting control strategy optimization for a cascade air source heat pump …
Improving defrosting performance of cascade air source heat pump using thermal energy storage based reverse cycle defrosting method Appl. Therm. Eng., 121 ( 2017 ), pp. 728 - 736 View PDF View article View in Scopus Google Scholar
The study of dynamic characteristics on a novel air source heat pump coupled with liquid-storage …
The three categories of thermal defrosting techniques are reverse cycle defrosting (RCD), hot-gas bypass defrosting (HGBD), and heat storage defrosting (HSD) (Fig. 1). The RCD method is the most common and frequently utilized thermal defrosting technique that doesn''t require additional external energy input [[21], [22], [23]].
Finned coil-type energy storage unit using composite inorganic hydrated salt for efficient air source heat pumps …
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting Appl. Energy, 238 ( 2019 ), pp. 303 - 310, 10.1016/j.apenergy.2019.01.079 View PDF View article View in Scopus Google Scholar
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting
Heating and energy storage characteristics of multi-split air source heat pump based on energy storage defrosting Bowen Yang, Jiankai Dong, Long Zhang, Mengjie Song, Yiqiang Jiang, Shiming Deng The Hong Kong Polytechnic University Research output: › › ...
An experimental study on energy-storage based defrosting performance of an air source heat pump system with a micro-channel heat …
DOI: 10.1016/j.applthermaleng.2023.122067 Corpus ID: 265299285 An experimental study on energy-storage based defrosting performance of an air source heat pump system with a micro-channel heat exchanger as …
Experimental study on the melted frost influence on the metal energy storage during an air source heat pump defrosting …
Metal energy storage (MES) had a negative impact of −7.5 % on defrosting efficiency due to a large amount of energy required to heat MCHX. Moreover, the negative influence of frost melt water and retained water on defrosting efficiency was −9.5 % and −1.9 %, respectively.
Improving defrosting performance of cascade air source heat pump using thermal energy storage based reverse cycle defrosting …
Semantic Scholar extracted view of "Improving defrosting performance of cascade air source heat pump using thermal energy storage based reverse cycle defrosting method" by M. Qu et al. DOI: 10.1016/J.APPLTHERMALENG.2017.04.146 Corpus ID: 114471104 ...
Experimental analysis of defrosting and heating performance of a solar‐assisted heat pump integrated phase change energy storage …
This thesis investigates a novel solar‐assisted heat pump integrated phase change energy storage system. The defrosting performance of this system was studied experimentally and the results were compared with two traditionally used methods: reverse cycle defrosting (RCD) method and hot gas bypass defrosting (HGBD) …
The study of dynamic characteristics on a novel air source heat pump coupled with liquid-storage …
Improving defrosting performance of cascade air source heat pump using thermal energy storage based reverse cycle defrosting method Appl. Therm. Eng., 121 ( 2017 ), pp. 728 - 736 View PDF View article View in Scopus Google Scholar
Experimental study on the melted frost influence on the metal energy storage during an air source heat pump defrosting …
The defrosting time and the energy consumption of FTHX heat pump system were 59.6% and 55.1% less than those of MCHX heat pump system, respectively, even though its frosting mass was 17.2% more.
An Experimental Study on the Improvement of Reverse Cycle Defrosting Performances for a Cascade Air Source Heat Pump using Thermal Energy Storage …
Keywords: Defrosting; Air source heat pump; Cascade; Thermal energy storage 1. Introduction Air Source Heat Pumps (ASHPs) have found applications worldwide in recent decades due to its advantages of energy-saving and environment-friendliness.
Performance investigation of a novel frost-free air-source heat pump water heater combined with energy storage and dehumidification …
Advances in new technologies, energy storage materials, defrosting, and optimization methods are promising to improve the performance of solar-assisted air source heat pump systems. Favourable renewable energy policies, energy performance contracting mode, and integrated energy systems give solar-assisted air source heat …
Operating performance of novel reverse-cycle defrosting method based on thermal energy storage for air source heat pump …
Similar concept of using energy storage defrosting was also reported by Dong et al. [17] who reported a 48.1% reduction in defrosting energy consumption and some 60% reduction in defrosting time ...
A newly designed air-source heat pump system with liquid subcooling defrosting…
A new type of air-source heat pump system with liquid subcooling defrosting (ASHPSD) was proposed, in which a hot ... including electric heating defrosting [12], [13], reverse cycle defrosting [14], [15], hot-gas bypass defrosting [16], energy storage defrosting ...
Thermodynamic mechanism of high energy performance of air source heat pump with coupled liquid-storage …
This study proposed a novel air source heat pump system (NASHPs) with coupled liquid-storage and gas-separator to prevent an air source heat pump (ASHP) from frosting. Compared to the original air source heat pump system (OASHPs), the proposed system delayed frost by 30 min and shortened defrosting time by 72 s in a cycle.
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