Simulation, implementation and monitoring of heat pump load shifting using a predictive controller

Allison, John and Cowie, Andrew and Galloway, Stuart and Hand, Jon and Kelly, Nicolas and Stephen, Bruce (2017) Simulation, implementation and monitoring of heat pump load shifting using a predictive controller. Energy Conversion and Management, 150. pp. 890-903. ISSN 0196-8904

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    Abstract

    A predictive load shifting controller has been developed and deployed in a low-carbon house near Glasgow, UK. The house features an under floor heating system, fed by an air-source heat pump. Based on forecast air temperatures and solar radiation levels, the controller 1) predicts the following day’s heating requirements to achieve thermal comfort 2) runs heat pump during off peak periods to deliver the required heat by pre-charging the under floor heating. Prior to its installation in the building, the controller’s operating characteristics were identified using a calibrated building simulation model. The performance of the controller in the house was monitored over four weeks in 2015. The monitored data indicated that the actual thermal performance of the predictive controller was better than that projected using simulation, with better levels of thermal comfort achieved. Indoor air temperatures were between 18°C to 23°C for around 87% of the time between 07:00-22:00. However, the performance of the heat pump under load shift control was extremely poor, with the heat being delivered primarily by the unit’s auxiliary immersion coil. The paper concludes with a refined version of the controller that should improve the day-ahead energy predictions and offer greater flexibility in heat pump operation for future field trials.

    Creators(s): Allison, John ORCID logoORCID: https://orcid.org/0000-0003-3133-0558, Cowie, Andrew ORCID logoORCID: https://orcid.org/0000-0002-1852-7113, Galloway, Stuart ORCID logoORCID: https://orcid.org/0000-0003-1978-993X, Hand, Jon, Kelly, Nicolas ORCID logoORCID: https://orcid.org/0000-0001-6517-5942 and Stephen, Bruce ORCID logoORCID: https://orcid.org/0000-0001-7502-8129;
    Item type:Article
    ID code:60566
    Keywords:heat pump, load shifting, field trial, building simulation, predictive control, Mechanical engineering and machinery, Renewable Energy, Sustainability and the Environment, Nuclear Energy and Engineering, Fuel Technology, Energy Engineering and Power Technology
    Subjects:Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Faculty of Engineering > Electronic and Electrical Engineering
    Strategic Research Themes > Energy
    Strategic Research Themes > Measurement Science and Enabling Technologies
    Depositing user: Pure Administrator
    Date deposited:28 Apr 2017 16:59
    Last modified:21 Jan 2021 09:18
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/60566
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