SIMULATION RESEARCH OF COUPLED HEATING SYSTEM UTILIZING WASTE HEAT FROM SUPERCOMEPUTER CENTERS AND SOLAR ENERGY BASED ON SEASONAL SOIL HEAT STORAGE

Li Zheng; Sun Dongliang; Wang Qi; Zhou Chenfei; Yu Bo

doi:10.19912/j.0254-0096.tynxb.2023-1143

PDF(3435 KB)

Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 384-393. DOI: 10.19912/j.0254-0096.tynxb.2023-1143

SIMULATION RESEARCH OF COUPLED HEATING SYSTEM UTILIZING WASTE HEAT FROM SUPERCOMEPUTER CENTERS AND SOLAR ENERGY BASED ON SEASONAL SOIL HEAT STORAGE

Li Zheng, Sun Dongliang, Wang Qi, Zhou Chenfei, Yu Bo

Author information +

History +

Abstract

In order to alleviate the energy crisis and reduce environmental pollution, a heating system that couples waste heat from Supercomputer Centers and solar energy with seasonal soil heat storage is innovatively proposed in this paper. This system is suitable for mid-to-high-rise residential buildings with limited areas for solar collectors, which makes it challenging to meet the heating demand. During the heating season, the system combines waste heat from Supercomputer Centers, solar energy, and ground source heat pumps for heating. During the non-heating season, the surplus heat is injected into the soil to maintain thermal balance. To validate the superiority of this system, simulation models are constructed using the TRNSYS software based on 20 residential buildings in the Langfang region as the research subjects. The simulation models include a traditional " simple heating system utilizing solar energy based on seasonal soil heat storage" and "coupled heating system utilizing waste heat from Supercomputer Centers and solar energy with seasonal soil heat storage". The comparative study shows that during the 10-year operating period, the coupled heating system shows a gradual increase in average soil temperature, with an overall increase of 0.73 ℃. The system energy consumption decreases from an initial value of 3.56×10⁶ kWh to 3.45×10⁶ kWh, and the COP rises from 3.99 to 4.11. the average soil temperature in the simple heating system is decreasing year by year. At the end of the third year of operation, the average soil temperature drops by 5.14 °C. This leads to a long time low-temperature state of the ground loop water and causes shutdown protection of the heat pump, which resulted in the system being unable to provide proper heating. Within the three years of operation, the system energy consumption raises from 4.4×10⁶ kWh to 5.2×10⁶ kWh, and the COP drops from 3.20 to 2.70. The above analysis indicates that compared to the simple heating system, the heating system coupling waste heat from Supercomputer Centers and solar energy enhances the seasonal utilization of surplus heat from Supercomputer Centers, which can improve energy performance of the center and heating performance of the system. Additionally, it is more suitable for heating applications in mid-to-high-rise buildings.

Key words

waste heat / solar energy / heat storage / coupled heating system / TRNSYS / thermal balance

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Li Zheng, Sun Dongliang, Wang Qi, Zhou Chenfei, Yu Bo. SIMULATION RESEARCH OF COUPLED HEATING SYSTEM UTILIZING WASTE HEAT FROM SUPERCOMEPUTER CENTERS AND SOLAR ENERGY BASED ON SEASONAL SOIL HEAT STORAGE[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 384-393 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1143

References

[1] XU Q, RIFFAT S, ZHANG S H.Review of heat recovery technologies for building applications[J]. Energies, 2019, 12(7): 1285.
[2] PENROD E B, PRASANNA K V.Design of a flat-plate collector for a solar earth heat pump[J]. Solar energy, 1962, 6(1): 9-22.
[3] GEORGIEV A, POPOV R, TOSHKOV E.Investigation of a hybrid system with ground source heat pump and solar collectors: charging of thermal storages and space heating[J]. Renewable energy, 2020, 147: 2774-2790.
[4] LEE M, LEE D C, PARK M H, et al.Performance improvement of solar-assisted ground-source heat pumps with parallelly connected heat sources in heating-dominated areas[J]. Energy, 2022, 240: 122807.
[5] COSKUN S.Performance analysis of a solar-assisted ground source heat pump system in climatic conditions of Turkey[J]. Thermal science, 2020, 24(2 Part A): 977-989.
[6] MIGLA L, SNEGIRJOVS A, SHUTENKOVA O.Performance analysis of solar assisted ground coupled heat pump system in Latvia[J]. E3S web of conferences, 2020, 172: 22011.
[7] BIGLARIAN H, SAIDI M H, ABBASPOUR M.Economic and environmental assessment of a solar-assisted ground source heat pump system in a heating-dominated climate[J]. International journal of environmental science and technology, 2019, 16(7): 3091-3098.
[8] DUARTE W M, PAULINO T F, TAVARES S G, et al.Feasibility of solar-geothermal hybrid source heat pump for producing domestic hot water in hot climates[J]. International journal of refrigeration, 2021, 124: 184-196.
[9] NAILI N, KOOLI S.Solar-assisted ground source heat pump system operated in heating mode: a case study in Tunisia[J]. Renewable and sustainable energy reviews, 2021, 145: 111144.
[10] NAHAVANDINEZHAD M, ZAHEDI A.Conceptual design of solar/geothermal hybrid system focusing on technical, economic and environmental parameters[J]. Renewable energy, 2022, 181: 1110-1125.
[11] LI Y F, BI Y H, LIN Y S, et al.Analysis of the soil heat balance of a solar-ground source absorption heat pump with the soil-based energy storage in the transition season[J]. Energy, 2023, 264: 126394.
[12] ZHANG C X, NIELSEN E, FAN J H, et al.Experimental investigation on a combined solar and ground source heat pump system for a single-family house: energy flow analysis and performance assessment[J]. Energy and buildings, 2021, 241: 110958.
[13] HUANG J P, FAN J H, FURBO S.Demonstration and optimization of a solar district heating system with ground source heat pumps[J]. Solar energy, 2020, 202: 171-189.
[14] ZHANG X Y, WANG E Y, LIU L S, et al.Analysis of the operation performance of a hybrid solar ground-source heat pump system[J]. Energy and buildings, 2022, 268: 112218.
[15] CHEN Y Z, WANG J J, MA C F, et al.Multicriteria performance investigations of a hybrid ground source heat pump system integrated with concentrated photovoltaic thermal solar collectors[J]. Energy conversion and management, 2019, 197: 111862.
[16] WEI C X, WANG Z C, MA K R, et al.Heating application and environmental benefit of solar-assisted ground-source heat pump with seasonal energy storage[J]. Journal of environmental protection and ecology, 2021, 22(2): 588-601.
[17] 刘艳峰, 宋梦瑶, 周勇, 等. 分区串并联式太阳能-地源热泵跨季节蓄热组合系统性能研究[J]. 太阳能学报, 2021, 42(12): 71-79.
LIU Y F, SONG M Y, ZHOU Y, et al.Research on performance of subarea series-parallel solar assisted ground source heat pump system[J]. Acta energiae solaris sinica, 2021, 42(12): 71-79.
[18] 刘仙萍, 田东, 雷豫豪, 等. 光伏/光热-地源热泵联合供热系统运行性能研究[J]. 太阳能学报, 2022, 43(9): 88-97.
LIU X P, TIAN D, LEI Y H, et al.Performance analysis for solar photovoltaic/thermalground source heat pump hybrid heating system[J]. Acta energiae solaris sinica, 2022, 43(9): 88-97.
[19] 杨震, 陈翔燕, 刘诚, 等. 一种基于BP神经网络的太阳能-土壤源热泵复合系统供暖策略仿真[J]. 太阳能学报, 2022, 43(8): 224-229.
YANG Z, CHEN X Y, LIU C, et al.Simulation on a heating strategy based on BP neural network of solar-ground source heat pump composite system[J]. Acta energiae solaris sinica, 2022, 43(8): 224-229.
[20] 高晋坤, 余娟, 刘珏麟, 等. 考虑多时段设备耦合的数据中心能效优化方法[J]. 电力系统自动化, 2022, 46(15): 153-161.
GAO J K, YU J, LIU J L, et al.Optimization method for energy efficiency of data center considering multi-period equipment coupling[J]. Automation of electric power systems, 2022, 46(15): 153-161.
[21] GB 50174—2017, 数据中心设计规范[S].
GB 50174—2017, Code for design of data centers[S].
[22] 李国柱, 崔美华, 黄凯良, 等. 数据中心余热利用现状及在建筑供暖中的应用[J]. 科学技术与工程, 2022, 22(26): 11287-11295.
LI G Z, CUI M H, HUANG K L, et al.Current situation of data center waste heat utilization and its application in building heating[J]. Science technology and engineering, 2022, 22(26): 11287-11295.
[23] WAHLROOS M, PÄRSSINEN M, RINNE S, et al. Future views on waste heat utilization: case of data centers in Northern Europe[J]. Renewable and sustainable energy reviews, 2018, 82: 1749-1764.
[24] 马闯, 任建兴, 李芳芹, 等. 基于<inline-graphic xlink:href="-45-11-384.xml/img_1.png"/>分析的水源热泵利用低品味余热的试验分析[J]. 科学技术与工程, 2020, 20(14): 5629-5632.
MA C, REN J X, LI F Q, et al.Experimental analysis of low-grade waste heat using water source heat pump based on exergy analysis[J]. Science technology and engineering, 2020, 20(14): 5629-5632.
[25] 罗玉庆. 大型数据中心余热回收利用节能研究[J]. 节能, 2019, 38(8): 46-48.
LUO Y Q.Energy-saving research on waste heat recovery and utilization in large data center[J]. Energy conservation, 2019, 38(8): 46-48.
[26] YUMRUTAŞ R, ÜNSAL M.A computational model of a heat pump system with a hemispherical surface tank as the ground heat source[J]. Energy, 2000, 25(4): 371-388.
[27] FURIHATA Y, HAYAMA H, ENAI M, et al.Efficient cooling system for IT equipment in a data center[C]//The 25th International Telecommunications Energy Conference, 2003. INTELEC '03. Yokohama, Japan, 2003: 152-159.