Development of a new generation of high efficiency heat pumps using pre-heated air supply

本项目是对使用太阳能集热器的建议进行可行性研究，当太阳能集热器集成到建筑物中时，可以预热送入空气源热泵的空气（空气源热泵）预可行性模型表明，通过使用太阳能空气收集器将空气供应预热到专门优化的ASHPs，我们将能够提高ASHPs的效率，达到以下程度：1）碳排放量（每千瓦时的热量）将大大低于与节能燃气锅炉相关的排放，2）热量成本（在2020年代内）将低于高效燃气锅炉。因此，这一发现可能导致ASHP相对于燃气锅炉的竞争力发生阶跃变化。这将加速ASHP在英国的主流部署，首先是在新建住房和新商业建筑中，然后是在现有的英国建筑存量中。该项目将具体调查：评估系统设计方案开发详细的热力系统设计模型和需求侧模型，制定控制和调节策略研究系统组件的优化（特别注意工作流体，流体流速，换热器和控制器）计算不同气候条件下的理论系统性能，并进行成本效益和基准分析。该项目将有助于解决英国的能源问题三难困境：通过提供碳排放量低于干线天然气的可再生热能和排放量显著低于基于电力压缩机的冷却系统的可再生冷却来减少排放;通过显著减少对化石燃料的需求来提高供应安全性;并且通过提供能够产生热量的高效率ASHP来降低成本，（用于空间加热、水加热和冷却），成本低于主燃气和其他可再生能源/“清洁能源”选择。

This project is a feasibility study into the proposal of using solar collectors which when integrated into buildings can prewarm the air fed into ASHP (Air Source Heat Pumps)Pre-feasibility modelling indicates that by using solar air collectors to pre-heat the air supply to specially optimised ASHPswe will be able to increase the efficiency of ASHPs to the extent that 1) the carbon emissions (per kWh of heat) from theiruse will be significantly lower than the emissions associated with energy efficient gas boilers and 2) the cost of heat will(within the 2020s) become lower than that from efficient gas boilers.The findings could therefore lead to a step-change in the competitiveness of ASHPs relative to gas boilers. This willaccelerate the mainstream deployment of ASHPs in the UK, initially within new build housing and new commercialbuildings and subsequently into the existing UK building stock.The project will specifically investigate:Appraisal of system design optionsDevelopment of a detailed thermodynamic system design model and demand-side model(s),Formulation of control and modulation strategiesInvestigation into optimisation of system components (with particular attention to working fluids, fluid flow rates, heatexchanger and controller)Calculation of theoretical system performance in different climates and undertaking of cost benefit and benchmarkinganalysis.This project will contribute towards addressing the UK's energy trilemma by reducing emissions by leading to a supply ofrenewable heat with lower carbon emissions than mains gas and of renewable cooling with significantly lower emissionsthan electricity powered compressor-based cooling systems; improving security of supply by significantly reducing demandfor fossil fuels; and reducing cost by providing a high-efficiency ASHP capable of generating heat (for space heating, waterheating and cooling) at a lower cost than both mains gas and other renewable energy/"clean energy" options.