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In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
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Related Experiment Video

Updated: May 2, 2026

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CHP project brings substantial savings.

Alan Newman

    Health Estate
    |March 14, 2014
    PubMed
    Summary

    The East and North Hertfordshire NHS Trust exceeded carbon reduction targets two years early. This success was driven by a new combined heat and power energy center at Lister Hospital.

    Area of Science:

    • Healthcare Engineering
    • Sustainable Energy Systems
    • Environmental Management in Healthcare

    Background:

    • The National Health Service (NHS) committed to a 10% carbon footprint reduction by 2015.
    • Healthcare facilities face increasing pressure to adopt sustainable practices and reduce environmental impact.
    • Previous energy infrastructure may not meet modern efficiency and sustainability standards.

    Purpose of the Study:

    • To detail the successful implementation of a carbon reduction strategy within an NHS Trust.
    • To highlight the role of specialized engineering expertise in achieving sustainability targets.
    • To showcase the effectiveness of combined heat and power (CHP) systems in healthcare settings.

    Main Methods:

    • Implementation of a new combined heat and power (CHP)-based energy centre at Lister Hospital.

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  • Collaboration between building services engineers (Troup Bywaters + Anders) and the healthcare facility (East and North Hertfordshire NHS Trust).
  • Strategic planning and execution of energy efficiency measures.

    • Main Results:

    • The East and North Hertfordshire NHS Trust surpassed its carbon reduction targets two years ahead of the 2015 deadline.
    • The new CHP energy centre was the key element in achieving significant carbon footprint reduction.
    • The project received the 2013 IHEEM Healthcare Estates Sustainability Award.

    Conclusions:

    • Combined heat and power (CHP) systems are highly effective for carbon reduction in NHS facilities.
    • Proactive implementation of sustainable energy solutions can lead to exceeding environmental targets.
    • Expert engineering partnerships are crucial for successful healthcare sustainability initiatives.