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Water-to-Water Heat Pump Control Strategies and Online Set-point Optimization


J. Karjalainen

Semester Thesis, HS15 (10496)

Successfully transforming the current building stock to a truly sustainable, low-carbon building stock is not merely a matter of making smart and overarching decisions in the design process, but also a matter of optimizing energy efficiency of current and emerging technologies. The way heat pumps are controlled plays a significant part in its energy performance. In fact, around a 20-40% reduction in seasonal power consumption could be realized by utilizing variable speed heat pump control strategies in comparison to the conventional intermittent operation of heat pumps and up to 70% reduction in primary energy use relative to conventional space heating and cooling technologies could be realized. However, control and coordination of these inputs is a considerable challenge, as high physical couplings exist between the inputs and the actuated outputs. This, in conjunction with the need for optimal energy performance, gives rise to interest for online set-point optimization in heat pumps. The aim of this semester thesis is to build up a heat pump simulation model for study of water-to-water heat pump control strategies, which can in later work be used to study COP benefits of an online set-point optimizer. The second goal of the work is to study and compare the performance of various heat pump control strategies using the simulation model that can be used as a benchmark for evaluating the performance and COP benefits of the online set-point optimizer in later work.

Supervisors: Ralph Evins (Empa), John Lygeros


Type of Publication:

(13)Semester/Bachelor Thesis

J. Lygeros

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2016:IFA_5382
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