HOSPITAL ENERGY SYSTEMS
Replacing gas fired
systems with heat pumps…
Start Does the
alternative heat source generate hot water above 65 °C all the time?
Consider options for domestic hot water
No Has adequate
provision for Legionella control been maintained in the domestic hot water system in all clinical areas?
Yes
Yes
No
Provision must be provided
Can the plant be
accommodated and is the existing distribution capable of accommodating the increased electrical loads?
No
Allow provision and work with relevant persons to ensure interruption is managed / minimised
Yes
Is the incoming
electrical service adequate to supply the increased maximum demand?
No
Work with local supply authority and relevant hospital staff to provide supply and minimise disruption. Review next steps also
Yes Consider the following: Does the
facility have dual independent incoming electrical feeds?
No
1 - What are the backup and emergency power provisions? 2 - Do the essential services lighting and power boards provide all essential cover? 3 - Are the generators continuous rated?
Yes
What is the clinical effect of the upgrade process? Work with clinicians and relevant persons to ensure interruption is managed / minimised
Commence design and planning
Figure 3: Elements to consider during the planning and implementation of removing natural gas from a hospital, starting with heat pump systems.
gas from a hospital, starting with heat pump systems.
n This article, titled First, do No Harm, was previously published in the December 2022 edition of Healthcare Facilities, the official journal of the Institute of Healthcare Engineering, Australia. HEJ thanks the IHEA, the authors, and the magazine’s publisher, Adbourne Publishing, for allowing its reproduction here.
24 Health Estate Journal February 2023
James Moyes, Simon Witts, and Broden Kay
James Moyes is the Energy Sector lead for VA Sciences, based in Melbourne. Simon Witts,
M.AIRAH, is the National Division director for Engineering at VA Sciences, and Broden Kay is the Fluids Sector lead for the company.
VA Sciences is a scientific consultancy offering a fully developed suite of STEM (Science, Technology, Engineering, and Mathematics) services, which provides clients with ‘evidence-based solutions’.
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