改善突尼斯温室的夜间小气候：将创新型圆锥螺旋形热交换器与地源热泵系统相结合的实验研究

IF 3.5 2区工程技术 Q3 ENERGY & FUELS Geothermics Pub Date : 2024-08-01 DOI:10.1016/j.geothermics.2024.103127

Hassen Boughanmi, Nawel Khaldi, Mariem Lazaar, Amanallah Guizani

{"title":"改善突尼斯温室的夜间小气候：将创新型圆锥螺旋形热交换器与地源热泵系统相结合的实验研究","authors":"Hassen Boughanmi, Nawel Khaldi, Mariem Lazaar, Amanallah Guizani","doi":"10.1016/j.geothermics.2024.103127","DOIUrl":null,"url":null,"abstract":"<div>Ensuring an optimal nocturnal microclimate within greenhouses is essential for successful crop cultivation. In regions like Tunisia, characterized by arid and semi-arid climates, managing temperature and humidity during the night, particularly in cold winter months, is challenging and often requires external heating sources. This study aims to investigate the use of geothermal energy as a sustainable solution for greenhouse heating, focusing on an innovative helicoidal geothermal system to maintain ideal nocturnal conditions.The primary objective of this research is to evaluate the effectiveness of the helicoidal geothermal system in achieving optimal temperature and humidity levels for plant growth during the night. Conducted at the Research and Technology Centre of Energy in Tunisia, the experimental investigation involved a new ground heat exchanger coupled with a heat pump system.The experimental setup consisted of two greenhouses: one serving as a control and the other equipped with two Conic Helicoidal Ground Heat Exchangers (CHGHE) and a Ground-Source Heat Pump (GSHP) system, which includes both underground and suspended heat exchangers. The results demonstrated that the geothermal system, operating at an optimal flow rate of 0.6 kg/s, successfully maintained the nocturnal comfort temperature required for plant growth. The coefficients of performance for the geothermal heat pump (<math><mrow><mi>C</mi><mi>O</mi><msub><mi>P</mi><mrow><mi>h</mi><mi>p</mi></mrow></msub></mrow></math>) and the overall system (<math><mrow><mi>C</mi><mi>O</mi><msub><mi>P</mi><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub></mrow></math>) were calculated to be 3.12 and 2.7, respectively.These findings underscore the potential of near-surface geothermal energy, utilizing a geothermal heat pump, to efficiently heat greenhouses under the climatic conditions of Tunisia. This approach not only supports sustainable agricultural practices but also offers significant energy efficiency and cost-saving benefits.</div>","PeriodicalId":55095,"journal":{"name":"Geothermics","volume":"123 ","pages":"Article 103127"},"PeriodicalIF":3.5000,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing nocturnal microclimate in Tunisian greenhouses: Experimental study on integrating an innovative conic helicoidal heat exchanger with a geothermal heat pump system\",\"authors\":\"Hassen Boughanmi, Nawel Khaldi, Mariem Lazaar, Amanallah Guizani\",\"doi\":\"10.1016/j.geothermics.2024.103127\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>Ensuring an optimal nocturnal microclimate within greenhouses is essential for successful crop cultivation. In regions like Tunisia, characterized by arid and semi-arid climates, managing temperature and humidity during the night, particularly in cold winter months, is challenging and often requires external heating sources. This study aims to investigate the use of geothermal energy as a sustainable solution for greenhouse heating, focusing on an innovative helicoidal geothermal system to maintain ideal nocturnal conditions.The primary objective of this research is to evaluate the effectiveness of the helicoidal geothermal system in achieving optimal temperature and humidity levels for plant growth during the night. Conducted at the Research and Technology Centre of Energy in Tunisia, the experimental investigation involved a new ground heat exchanger coupled with a heat pump system.The experimental setup consisted of two greenhouses: one serving as a control and the other equipped with two Conic Helicoidal Ground Heat Exchangers (CHGHE) and a Ground-Source Heat Pump (GSHP) system, which includes both underground and suspended heat exchangers. The results demonstrated that the geothermal system, operating at an optimal flow rate of 0.6 kg/s, successfully maintained the nocturnal comfort temperature required for plant growth. The coefficients of performance for the geothermal heat pump (<math><mrow><mi>C</mi><mi>O</mi><msub><mi>P</mi><mrow><mi>h</mi><mi>p</mi></mrow></msub></mrow></math>) and the overall system (<math><mrow><mi>C</mi><mi>O</mi><msub><mi>P</mi><mrow><mi>s</mi><mi>y</mi><mi>s</mi></mrow></msub></mrow></math>) were calculated to be 3.12 and 2.7, respectively.These findings underscore the potential of near-surface geothermal energy, utilizing a geothermal heat pump, to efficiently heat greenhouses under the climatic conditions of Tunisia. This approach not only supports sustainable agricultural practices but also offers significant energy efficiency and cost-saving benefits.</div>\",\"PeriodicalId\":55095,\"journal\":{\"name\":\"Geothermics\",\"volume\":\"123 \",\"pages\":\"Article 103127\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geothermics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S037565052400213X\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geothermics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S037565052400213X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

摘要

确保温室内最佳的夜间小气候对作物栽培的成功至关重要。在突尼斯这样以干旱和半干旱气候为特征的地区，夜间（尤其是寒冷的冬季）的温度和湿度管理具有挑战性，通常需要外部加热源。这项研究的主要目的是评估螺旋地热系统在夜间实现植物生长所需的最佳温度和湿度水平方面的有效性。实验装置由两个温室组成：一个作为对照，另一个配备了两个圆锥螺旋地热交换器（CGHE）和一个地源热泵（GSHP）系统，其中包括地下和悬挂式热交换器。结果表明，地热系统以 0.6 公斤/秒的最佳流速运行，成功地保持了植物生长所需的夜间舒适温度。经计算，地热泵的性能系数（COPhp）和整个系统的性能系数（COPsys）分别为 3.12 和 2.7。这些研究结果突出表明，在突尼斯的气候条件下，利用地热泵的近地表地热能源可以有效地为温室供暖。这种方法不仅支持可持续农业实践，而且还具有显著的能源效率和成本节约效益。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

Enhancing nocturnal microclimate in Tunisian greenhouses: Experimental study on integrating an innovative conic helicoidal heat exchanger with a geothermal heat pump system

Ensuring an optimal nocturnal microclimate within greenhouses is essential for successful crop cultivation. In regions like Tunisia, characterized by arid and semi-arid climates, managing temperature and humidity during the night, particularly in cold winter months, is challenging and often requires external heating sources. This study aims to investigate the use of geothermal energy as a sustainable solution for greenhouse heating, focusing on an innovative helicoidal geothermal system to maintain ideal nocturnal conditions.

The primary objective of this research is to evaluate the effectiveness of the helicoidal geothermal system in achieving optimal temperature and humidity levels for plant growth during the night. Conducted at the Research and Technology Centre of Energy in Tunisia, the experimental investigation involved a new ground heat exchanger coupled with a heat pump system.

The experimental setup consisted of two greenhouses: one serving as a control and the other equipped with two Conic Helicoidal Ground Heat Exchangers (CHGHE) and a Ground-Source Heat Pump (GSHP) system, which includes both underground and suspended heat exchangers. The results demonstrated that the geothermal system, operating at an optimal flow rate of 0.6 kg/s, successfully maintained the nocturnal comfort temperature required for plant growth. The coefficients of performance for the geothermal heat pump ( $C O P_{h p}$ ) and the overall system ( $C O P_{s y s}$ ) were calculated to be 3.12 and 2.7, respectively.

These findings underscore the potential of near-surface geothermal energy, utilizing a geothermal heat pump, to efficiently heat greenhouses under the climatic conditions of Tunisia. This approach not only supports sustainable agricultural practices but also offers significant energy efficiency and cost-saving benefits.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Geothermics 工程技术-地球科学综合

CiteScore

7.70

自引率

15.40%

发文量

237

审稿时长

4.5 months

期刊介绍： Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field. It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.