Hybrid ground source heat pump for sustainable greenhouse climate control in hot and humid region

IF 7 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments Pub Date : 2025-10-10 DOI:10.1016/j.seta.2025.104615

T.M. Abir Ahsan , Md. Shamim Ahamed , Ahmed A. Hassan

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引用次数: 0

Abstract

Greenhouses in hot and humid regions present significant challenges in maintaining optimal temperatures and humidity while minimizing energy and water usage. Traditional boiler-based heating is energy-intensive, and evaporative cooling often fails to maintain suitable conditions, especially under high humidity and peak thermal loads. This study evaluates the performance of a novel hybrid geothermal heat pump (HGSHP) system integrated with a cooling tower, specifically optimized for greenhouse operations in hot and humid climates such as Houston, Texas. The system was assessed using a dynamic model developed in TRNSYS Studio. Results showed that the HGSHP configuration reduced cooling energy consumption by up to 10.8% compared to GSHP-only systems and significantly enhanced ground thermal stability, lowering the annual ground temperature rise from 1 °C to less than 0.1 °C. The wet cooling tower effectively mitigated thermal imbalance by rejecting up to 37% of the cooling load during peak summer conditions. These findings highlight the potential of HGSHP systems to deliver efficient heating, cooling, and dehumidification with improved energy performance and long-term sustainability for greenhouse applications in hot and humid regions.

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混合地源热泵用于湿热地区可持续温室气候控制

炎热潮湿地区的温室在保持最佳温度和湿度的同时最大限度地减少能源和水的使用，这是一个重大挑战。传统的基于锅炉的供暖是能源密集型的，蒸发冷却往往不能保持合适的条件，特别是在高湿度和峰值热负荷下。本研究评估了一种新型混合地热热泵（HGSHP）系统的性能，该系统集成了冷却塔，专门针对德克萨斯州休斯顿等湿热气候下的温室作业进行了优化。使用TRNSYS Studio开发的动态模型对系统进行评估。结果表明，与仅地源热泵系统相比，HGSHP配置减少了高达10.8%的冷却能耗，并显著增强了地面热稳定性，将年地面温升从1°C降低到0.1°C以下。湿式冷却塔通过在夏季峰值条件下拒绝高达37%的冷却负荷，有效地缓解了热平衡。这些发现突出了HGSHP系统在提供高效加热、冷却和除湿方面的潜力，同时提高了能源性能和长期可持续性，适用于湿热地区的温室应用。

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.