Design feasibility study of an innovative solar chiller/heater for thermal management of greenhouse water supplies

用于温室供水热管理的创新型太阳能制冷机/加热器的设计可行性研究

• 批准号: 437144-2012
• 负责人: Carriveau, Edward
• 金额: $ 1.82万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=511068
• 关键词: Design; feasibility; study; innovative; solar

Water is a critically essential resource in the greenhouse industry. Greenhouse profitability is directly influenced by the cost of water. The primary supply of water for many greenhouses is the municipality. The expansion and/or replacement of municipal water infrastructure is currently compounding already costly water rates. Subsequently, it is advantageous for greenhouse operators to utilize as much reclaimed water as possible. Greenhouse owners are also concerned about the environmental implications of their water usage. Thus, where possible, water that has already cycled through the irrigation system is collected and added to storm water collected from the greenhouse roofs and property. The collected water is often stored in a central repository like a pond. Modern greenhouses are automated and tightly regulated environments that are very sensitive to changes in growing conditions. This includes the temperature of the water required to sustain the plants. Water drawn in winter months must be heated prior to distribution. In warm months, pond water temperatures cross a maximum threshold that prohibits the water from being used to irrigate the greenhouses. Presently, the only available alternative for operators in these months is to switch to the more temperate municipal water supply. The increased cost of this option cuts significantly into farm profits. The current proposal describes a study that will investigate the technical and financial feasibility of an innovative integrated solar-driven irrigation thermal management system. The proposed solution incorporates established absorption cycle principals with leading edge heat transfer and photovoltaic advancement technology under development at the University of Windsor. The in-situ solar absorptive chiller/heater system will allow the farm to significantly reduce their reliance on costly municipal water supplies. Secondly, in addition to providing power for self-sustenance, these processes may yield excess power to be utilized in greenhouse operations, further reducing dependency on local utilities. The overarching objective of this work is to minimize greenhouse dependency on municipal fresh water supplies.

水是温室产业中至关重要的资源。 温室效益直接受到水成本的影响。 许多温室的主要供水是市政当局。 市政供水基础设施的扩建和/或更换目前使本已昂贵的水费更加复杂。 因此，温室运营商尽可能多地利用再生水是有利的。 温室所有者还担心其用水对环境的影响。 因此，在可能的情况下，已经通过灌溉系统循环的水被收集并添加到从温室屋顶和财产收集的雨水中。 收集的水通常储存在一个中央储存库，如池塘。 现代温室是自动化和严格管制的环境，对生长条件的变化非常敏感。 这包括维持植物所需的水温。 冬季抽取的水必须在分配前加热。 在温暖的月份，池塘水的温度超过了一个最高阈值，禁止水被用来灌溉温室。 目前，运营商在这几个月内唯一可用的替代方案是改用更温和的市政供水。 这一选择增加的成本大大削减了农场的利润。 目前的提案描述了一项研究，该研究将调查创新的综合太阳能灌溉热管理系统的技术和财务可行性。 拟议的解决方案将既定的吸收循环原理与温莎大学正在开发的前沿传热和光伏先进技术相结合。 现场太阳能吸收式制冷机/加热器系统将使农场大大减少对昂贵的市政供水的依赖。第二，除了为自我维持提供电力外，这些过程还可以产生多余的电力用于温室操作，进一步减少对当地公用事业的依赖。 这项工作的总体目标是尽量减少温室气体对城市淡水供应的依赖。