External Heat Engine mCHP

外热机 mCHP

• 批准号: EP/R000182/1
• 负责人: Saffa Riffat
• 金额: $ 56.12万
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR000182%2F1
• 关键词: External; Heat; Engine; mCHP

Building sector accounts for more than 60% of total energy consumption in the world, while the share of domestic buildings is about 20-40%. The energy consumed is mostly utilised for heating, cooling and ventilation purposes, contributing massively to fossil fuels consumption and thus CO2 emissions. Combined heat and power (CHP) systems generate electricity and harness the heat by-product for heating of buildings. Currently CHP systems deliver a combined efficiency of up to 80%, residential and small business bills can be reduced by 20-40%, and carbon production can be reduced by 30%. They also offer fuel flexibility, and being an independent system, reduce demand on centralised power supply and distribution systems. The current roadmap for UK CHP implementation will, by 2030, yield primary energy savings of 85-86TWh/a with a savings of 10-14Mt/a. The mCHP market is currently served by Stirling, ICE, and ORC systems, all of which have significant issues that limit wide mCHP installations. The proposed ECHP system will lead to significant energy savings (greater than 40%), CO2 emissions reduction and will be approximately 30% more efficient than current mCHP systems due to unique geometry and control system applied to the highly efficient Ericsson cycle. The ECHP will use Helium, eliminating the need for HFCs. Being an external heat engine allows the use of a variety of fuels from gas, petrol, diesel, biogas, biomass, etc. The small size and silent, vibration free operation allows renovating existing building stock where the system could be installed in constrained boiler spaces. If successful, the entirely new class of mCHP will be ideally suited for new and existing UK buildings and have: (a) high efficiency; (b) low maintenance; (c) silent and low vibration; (d) HFC free; (e) compact design; (f) implementation of a simple, consumer friendly GUI interface allowing optimal system control; and (g) use external heat source, allowing a wide variety of fuels. The proposed ECHP system is expected to have the following technical advantages: a system incorporating optimised compressor and expander geometry to approach isothermal operation, computer control of individual rotor motor-generators to optimise cycle efficiency and quicker start to operation times, system integration of combustion chamber, expander, recuperator, and compressor for maximum efficiency, and an optimized control algorithm with GUI control to create a mCHP suitable for demonstration of the theory and research development. Research will begin with description of the theoretical concept in relation to the ideal Ericsson cycle. System components will be modelled, to include various geometries. Using developed computer analysis programs and CFD, rotor design, porting, and recuperator component designs will be optimised as individual components then as an integrated system. Computer simulation models will be used to predict the thermal and electrical performance of the ECHP system. This process will perform an optimisation study of the system by taking into account the influence of different parameters of the ECHP system and power output efficiency. Changes to the parameters and components will be evaluated as required. Only when the feasibility of the system is proven, components will be fabricated and electronic control hardware/software will be developed. The components and then the complete systems will be evaluated. A lab scale 3kW ECHP will be fabricated and evaluated. The outputs of this research will validate the theoretical modelling, significantly increase the body of knowledge of external heat engines and determine the technical feasibility of the proposed concept which aims to surpass current systems efficiencies and approach Carnot efficiency.

建筑部门占全球总能源消耗的60％以上，而国内建筑的份额约为20-40％。消耗的能量主要用于加热，冷却和通风目的，从而极大地促进了化石燃料的消耗，从而大大促进了二氧化碳排放。加热和电力（CHP）系统产生电力并利用用于加热建筑物的热副产品。目前，CHP系统的综合效率高达80％，住宅和小型企业账单可以降低20-40％，碳生产可以降低30％。它们还提供燃料灵活性，并成为独立的系统，减少对集中电源和配电系统的需求。当前的英国卫生卫生卫生卫生卫生卫生会实施路线图将于2030年产生85-86TWH/A的初级能源节省，可节省10-14mt/a。 MCHP市场目前由Stirling，ICE和ORC系统提供服务，所有这些都有限制MCHP装置的重大问题。提出的ECHP系统将导致大量的能源节省（大于40％），二氧化碳排放量的减少，并且由于独特的几何形状和控制系统应用于高效的爱立信周期，因此比当前MCHP系统高约30％。 ECHP将使用氦气，从而消除了对HFC的需求。作为外部加热发动机允许使用汽油，汽油，柴油，沼气，生物量等各种燃料。小尺寸和无声，无振动的操作允许对现有的建筑物进行翻新，其中可以将系统安装在约束锅炉空间中。如果成功，那么全新的MCHP将非常适合新的和现有的英国建筑物，并且具有以下方式：（a）高效率； （b）维护较低； （c）静音和低振动； （d）免费的HFC； （e）紧凑的设计； （f）实现简单，消费者友好的GUI接口，允许最佳系统控制； （g）使用外部热源，允许多种燃料。 The proposed ECHP system is expected to have the following technical advantages: a system incorporating optimised compressor and expander geometry to approach isothermal operation, computer control of individual rotor motor-generators to optimise cycle efficiency and quicker start to operation times, system integration of combustion chamber, expander, recuperator, and compressor for maximum efficiency, and an optimized control algorithm with GUI control to create a mCHP suitable for demonstration of the理论与研究发展。研究将从与理想爱立信周期有关的理论概念的描述开始。系统组件将进行建模，以包括各种几何形状。使用开发的计算机分析程序和CFD，转子设计，移植和恢复器组件设计将被优化为单个组件，然后作为集成系统。计算机仿真模型将用于预测ECHP系统的热性能和电气性能。该过程将通过考虑ECHP系统的不同参数和功率输出效率的影响来对系统进行优化研究。将根据需要评估参数和组件的更改。只有在证明系统的可行性时，才会制造组件，并开发电子控制硬件/软件。将评估组件，然后将评估完整的系统。实验室量表3KW ECHP将被制造和评估。这项研究的输出将验证理论建模，大大提高外部供热发动机知识的体系，并确定旨在超越当前系统效率并实现Carnot效率的拟议概念的技术可行性。

项目成果

Novel rotary Ericsson cycle compressor and expander geometry for mCHP applications

适用于 mCHP 应用的新型旋转式爱立信循环压缩机和膨胀机几何结构

• 发表时间: 2018
• 作者: Benson, C

Ericsson cycle heat pump and heat engine parameter optimisation

爱立信循环热泵和热机参数优化

• 发表时间: 2019
• 作者: Benson, C

Optimised Liquid Flooded Gas Cycle for Heat Pump and External Heat Engine Applications

适用于热泵和外热机应用的优化液体淹没气体循环

• DOI: 10.5334/fce.83
• 发表时间: 2020
• 期刊: Future Cities and Environment
• 作者: Benson C

Parametric analysis on the performance of a revolutionary rotary Ericsson heat pump/engine

对革命性旋转式爱立信热泵/发动机性能的参数分析

• 发表时间: 2017
• 作者: Zhang W

Rotary Geometry Ericsson Cycle Heat Engine

旋转几何爱立信循环热机

• 发表时间: 2019
• 作者: Benson, C