The cold accumulation problem can lead to performance degradation of heat pumps. This paper presents the design and optimization of a solar-assisted storage system to solve this issue.
Different combinations of solar-assisted auxiliary heat source and conventional GSHP can lead to different soil temperature properties and system efficiencies. The main objective of this study is to analyze the performance of SA-GSHP systems and to optimize the solar collector size for SA-GSHP systems operating in cold regions.
Heat storage is important in solar systems to compensate for time differences between the availability of the heat source and the availability of the heating demand. A stratified fluid storage tank was considered in the current study.
Furthermore, our research team proposed the optimization design method for tunnel heat insulation and anti-freezing by using geothermal energy and presented the challenges for future applications of the ground-source heat pump (GSHP) system in tunnels.
Active freeze-proof measures aim to artificially and appropriately supply and supplement heat to the rock mass of the tunnel as well as retard or eliminate the freeze tendency of the rock mass. These methods usually use cheap local energy (such as geothermal energy) as a heat source and mainly include an EHT system as well as a GSHP system.
The simulation results show that the system can stabilize space heating. By storing solar energy into the soil in the transitional season, the imbalance efficiency can be kept at 1% to decrease the phenomenon of cold accumulation in the soil and ensure the COP stability of the heat pump unit.
Recent progress in anti-icing and deicing applications of the ...
Photothermal conversion, which converts solar energy into heat to melt pre-formed ice or prevent icing, is considered to be a non-contact, environmentally friendly and …
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CN103017381B
antifreezing solar energy system and antifreeze method . the external temperature of north of china in winter is lower, although solar water supply pipeline outer-layer wraps up...
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(PDF) Designing and Optimizing Heat Storage of a Solar
A simulation of the GSHP system combining solar seasonal energy storage is carried out to predict the long-term ground temperature field variation. The suitability of the systems to three...
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Long-Term Performance of Anti-Freeze Protection System of a Solar …
Based on these findings, to fill the knowledge gap this article presents the long-term results of thermal performance and anti-freeze protection of a solar heating system with heat pipe...
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Design Strategies for Anti‐Freeze Electrolytes in Aqueous Energy ...
This review aims to provide comprehensive scientific guidance and technical reference for the development of anti-freeze aqueous electrolytes with excellent low-temperature performance, thereby promoting the application and innovation of aqueous energy storage devices in low-temperature environments. The authors declare no conflict of interest.
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A state-of-the-art review of sustainable energy based freeze proof ...
Furthermore, our research team proposed the optimization design method for tunnel heat insulation and anti-freezing by using geothermal energy and presented the …
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Recent progress in anti-icing and deicing applications of the ...
Photothermal conversion, which converts solar energy into heat to melt pre-formed ice or prevent icing, is considered to be a non-contact, environmentally friendly and cost-effective anti-icing/deicing method. It is expected to solve the problem of ice accumulation, which has become a research hotspot in recent years. First, this work reviews ...
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Design Strategies for Anti‐Freeze Electrolytes in Aqueous Energy ...
This review aims to provide comprehensive scientific guidance and technical reference for the development of anti-freeze aqueous electrolytes with excellent low …
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100MW thermal solar energy storage in China close to completion
The project in Turna, Xinjiang, China. Image: Lan Shengwen, a reporter from Gaochang District Media Center. A 100MW thermal solar and molten salt energy storage system in Xinjiang, China, is set to be completed and grid-connected by the end of the year, part of a project which has also deployed conventional solar PV.
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Molten Salt Storage for Power Generation
Furthermore, there are several innovative electrical storage configurations with molten salt storage with the potential of higher efficiencies under investigation. They include pumped thermal energy storage (PTES), liquid air energy storage (LAES) and adiabatic compressed air energy storage (A-CAES). In this article the hybrid configuration of ...
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Long-Term Performance of Anti-Freeze Protection System of a …
Based on these findings, to fill the knowledge gap this article presents the long-term results of thermal performance and anti-freeze protection of a solar heating system with …
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A state-of-the-art review of sustainable energy based freeze proof ...
Furthermore, our research team proposed the optimization design method for tunnel heat insulation and anti-freezing by using geothermal energy and presented the challenges for future applications of the ground-source heat pump (GSHP) system in tunnels.
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Heat storage technologies for driving clean heating in China
As phase change heat storage has a stable temperature fluctuation during heat absorption/release and a narrow temperature range, when used for heating buildings, it can be …
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5 antifreeze methods make Sunpower water heaters safe for …
4. Venting antifreeze method. In case of low temperature or if the solar water heater is not used for a long time, it is necessary to close the water heater valve and vent the water in the water heater and the upper and lower pipes. In addition to antifreeze, solar water heaters need to be cleaned regularly. Because the magnesium ions dissolved ...
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Feasibility study on a novel freeze protection strategy for solar ...
To solve this issue, a novel anti-freezing strategy using the remnant thermal energy in solar collector as the heat source was proposed to prevent the freezing of the solar collecting system in winter nights and overcast days.
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A brief review of liquid heat transfer materials used in …
For solar power generation technologies, when water serves as the HTM, it is mainly used in the direct steam generation CSP systems 99 or some solar-based multi-energy hybrid systems (e.g., integrated solar-gas combined cycle systems 100, 101). In these CSP systems, water serves as the HTM and working fluid for the steam turbine simultaneously ...
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MXene aerogel-based phase change film for synergistic thermal ...
black surface and energy storage by antifreeze proteins. Inspired by the energy storage behavior of antifreeze proteins, we design acompositefilm,whichisfabricated via impregnation of organic phase change material (PCM) in a surface-modified MXene/bacte-rial-cellulose aerogel. The resulting composite aerogel-based PCM film shows an increased loading capacity of organic …
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Feasibility study on a novel freeze protection strategy for solar ...
To solve this issue, a novel anti-freezing strategy using the remnant thermal energy in solar collector as the heat source was proposed to prevent the freezing of the solar …
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MXene aerogel-based phase change materials toward solar energy ...
Nowadays, the energy shortage and greenhouse gas emissions are highly concerned topics. Therefore, the efficient and clean energy harvesting and utilization is of great significance to the sustainable development [13, 14].Among various strategies of energy harvesting and utilization, the physical energy cycle based on the absorption, conversion, …
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Designing and Optimizing Heat Storage of a Solar-Assisted …
This paper presents the design and optimization of a solar-assisted storage system to solve this issue. A ground source heat pump (GSHP) project was established using the transient system simulation program (TRNSYS) based on a ground heat exchange theoretical model, which was validated by a previously established experiment in Beijing.
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