no energy storage after defrosting
Случайные ссылки
A novel defrosting method using heat energy dissipated by the compressor …
The pressure spike was synchronizing with the No switching delay, evaporating temperature of 0/-35/-70 C 55% 47% 46.6% Kim et al. [34], Fig. 7 Periodic reverse cycle defrosting e 100% e Kim et al ...
An experimental study on energy-storage based defrosting …
The results show that the defrosting energy amount from the compressor decreased by 55.8%, and the defrosting energy consumption for evaporating frost and …
Operating performance of novel reverse-cycle defrosting method based on thermal energy storage …
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 ...
Power optimization for defrosting heaters in household refrigerators to reduce energy consumption …
Liu et al. [13] designed a new type of thermal storage defrosting system combined with a by-pass cycle to reduce the defrosting power consumption. Zhao et al. [14] improved defrosting efficiency by installing a fan cover, such that hot air in the evaporator chamber would not flow freezer compartment during defrosting.
A novel defrosting method using heat energy dissipated by the …
Besides, the defrosting period decreased by 43.9%, and the defrosting efficiency increased by 7.72% when the energy storage unit was employed. The results of this study are meaningful for the optimization of the air source heat pump system used in …
Improving reverse cycle defrosting performance of air source heat …
To solve the fundamental problem of insufficient heat available during defrosting while ensuring the efficient and safe system operation, a novel reverse cycle …
An experimental study on energy-storage based defrosting …
Energy storage period accounts for 33.0% of the entire energy storage heating period. • The defrosting energy source and consumption is quantitatively evaluated and analyzed. • The defrosting energy from compressor decreases by …
A novel defrosting method using heat energy dissipated by the compressor …
Fig. 2 shows the schematic of the experimental ASHP unit in which the novel thermal energy storage (TES) based reverse-cycle hot gas defrosting method was applied and tested. Compared to the conventional ASHP unit, the experimental unit includes a phase change material-heat exchanger (PCM-HE) and three solenoid modulating …
Improving defrosting performance of cascade air source heat …
However, the defrosting methods commonly used by conventional ASHPs cannot be directly applied to CASHPs. Therefore, a thermal energy storage (TES) based reverse …
Experimental study on the melted frost influence on the metal energy storage during an air source heat pump defrosting …
Song et al. [23] studied metal energy storage effect on reverse cycle defrosting in an ASHP with melted frost locally drainage, as well as the energy transfer procession during defrosting.
Experimental analysis of defrosting and heating performance of a …
This thesis investigates a novel solar-assisted heat pump integrated phase change energy storage system. The defrosting performance of this system was …
Heating and energy storage characteristics of multi-split air source …
Even though, compared with the conventional heating mode with three turned-on indoor units, the energy storage mode shortened the heating period by 8 min and decreased the average heating capacity and COP by 4.4% and 1.9%, respectively.
Feasibility analysis of thermal storage defrosting method for air …
To solve the problem of insufficient defrosting heat supply for RCD method, thermal energy storage (TES) based defrosting method has gained increasing …
An experimental study on energy-storage based 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 ...
Feasibility analysis of thermal storage defrosting method for air …
To solve the problem of insufficient defrosting heat supply for RCD method, thermal energy storage (TES) based defrosting method has gained increasing attention over the past …
Experimental study on the melted frost influence on the metal …
The energy storage of two coils'' metal at heating mode would influence the system defrosting efficiency. For a vertically installed outdoor coil having multiple …
Thermal energy storage based (TES-based) reverse cycle defrosting …
The test results suggested that when using the TES based reverse cycle defrosting method, defrosting duration was shortened by ~64.3%, and defrosting energy consumption reduced by ~30.3%, as ...
An experimental study on energy-storage based defrosting …
T. Zhan. Engineering, Environmental Science. International Journal of Green Energy. 2023. ABSTRACT When an air source heat pump (ASHP) operates at …
Experimental study on a new type of thermal storage defrosting …
In this paper, a novel type of thermal storage defrosting system of a frost-free refrigerator using phase change heat storage materials in storing condensation heat for defrosting is presented. The finned tube heat exchanger is installed in the nacelle of the refrigerator compressor for heat storage, with an overall size of 200 mm × 200 mm × …
Improving the frosting and defrosting performance of air source …
Since the frost that is present on the ASHP unit after shutdown has to be removed, defrosting becomes necessary. Among several reported defrosting methods, …