Louis Wauters outside Lithgow Hospital (Photo supplied)
Story by Louis Wauters
A Belgian medical doctor has journeyed to Lithgow and the Blue Mountains to learn more about Planetary Health and, while spending time at the University of Notre Dame’s Clinical School in Lithgow, has also explored Lithgow Hospital’s use of geothermal ground-source heat pump technology as part of its strategy to provide ‘green power for health’.
Key Points:
- Belgian doctor Louis Wauters is keen to tackle the root causes of our 21st Century health challenges, so has travelled to Lithgow and the Blue Mountains to explore how Planetary Health is being implemented in local government.
- With health systems in developed nations contributing about 5-8% of global greenhouse gas emissions, he was also interested to learn more about Lithgow Hospital’s use of geothermal ground source heat pump technology.
- Geothermal heat pump technology can be retrofitted into homes and will pay for itself in 8-18 years.
Last year I graduated from medical school at the University of Ghent in Belgium, and during my clinical rotations I had the feeling of not getting to the root cause of the problems we were confronting. There is a Dutch saying that describes how I felt: that we were just mopping up water while the tap was on and the water kept running. Wouldn’t it be great to, where possible, prevent people from becoming sick instead of just treating sick people. Wouldn’t it be great to turn off the tap and not need to keep mopping!
This feeling led me to the area of preventive healthcare. With the biggest health threats of our time being climate change and ecosystem changes, I then ended up looking into Planetary Health.
Planetary Health is a discipline that sees the health of people intrinsically connected to the health of the planet: the ecosystems, the climate, and all of nature surrounding us. If we foster a healthy planet, we also foster our own health.
I started to delve deeper and had the opportunity to undertake an internship with the Planetary Health Alliance, the leading global body on Planetary Health. I learned so much from this experience but felt that it only catered to academia. This didn’t leave me satisfied, as I wanted to know how Planetary Health could make a difference in people’s lives.
I searched for where Planetary Health was being used as a framework to guide policy for communities and found that Blue Mountains City Council was the only place in the world that appeared to be doing this with its Planetary Health Initiative in Katoomba. I contacted the Initiative and arranged to come to Australia to learn from the work being done here.
I received a warm welcome on my arrival from Lis Bastian (left) and Saskia Everingham (right) from the Blue Mountains Planetary Health Initiative (Photo: Lis Bastian)
Two weeks ago I arrived in Australia and made my way to the Blue Mountains. The University of Notre Dame kindly provided me with accommodation near the hospital in Lithgow. I got to know people at the University and medical students who were having their rural rotations in the Lithgow area.
Staying near the hospital I discovered that it uses geothermal ground source heat pump technology to cool the hospital during summer and heat it during the winter. I was intrigued by this cost-effective sustainable energy solution and investigated further.
Geothermal ground source heat pump technology for heating and cooling Lithgow Hospital (Image supplied)
Instead of using an external cooling tower, the geothermal system runs water through an underground loop and uses the stable temperature of the earth to gain or lose heat before running through 75 heat pumps to provide air conditioning. The stable ground temperature at around 50-100 meters below the earth’s surface will remain almost constant at 15-17°C during the whole year.
The earth acts as a heat source or a heat sink for the hospital by running 96 pipes filled with refrigerants, a type of fluid that acts as a conductor to transport the energy, through a closed pipe system. The system is drilled into the earth to a depth of 110 meters under the hospital’s car park. This was done over 25 years ago, to allow for easier future access and to limit interference with the construction of the hospital in 1998.
In 2023 the original system was replaced with more efficient units including a modern control system and new refrigerants with low Global Warming Potential values.
During the summer months, when cooling is needed, a heat pump takes the heat from the air and stores it in the refrigerant. The refrigerant then passes through the underground pipes and is cooled due to the surrounding lower temperature. During the winter months, when heating is needed, this same heat pump will take the heat from the ground, through the refrigerant, and dissipate it through the air in the hospital. This system gives sustainable heating during the winter, and sustainable cooling during the summer.
The closed loops provide enough capacity for 67 air conditioning units and 11 water-to-water units. The water-to-water units produce chilled and heated water to the operating theatre air handling units, heated water for kitchen space heating and the hydrotherapy pool, and process cooling for the central sterilising unit. The heat pump still uses electricity but for every kWh of energy used it provides up to 2-4 kWh of energy for cooling and/or heating.
How geothermal heat pumps work.
This system can be an alternative to, or supplement solar panels., as it does in Lithgow. The added benefit is that it is more resilient in the face of external weather conditions. Unlike solar, it works as well during rainy or smoke-filled months or during winter when there is less sun.
Lithgow Hospital’s infrastructure includes a 367-kilowatt solar photovoltaic system, and 1,563 LED lighting upgrades. On a bright summer’s day between 9 am and 3 pm the hospital’s entire electricity usage can be covered by green power. Some energy can even be sold back to the grid.
According to Scott Hanson (formerly Nepean Blue Mountains Local Health District):
“A traditional hospital air-conditioning system relies upon natural gas for large boilers to constantly heat water and electricity for air compressors to cool air. The biggest advantage with the Lithgow Hospital geothermal system is that no natural gas is required. All the heating and cooling of air is performed at the reverse cycle air compressors using electricity. In addition, the water used is pumped through the geothermal loop underground to use the consistent temperature of the earth to gain or lose heat naturally, thereby reducing the load at the compressor. Finally, the 367 kilo-Watt roof mounted solar panel system provides enough electricity to power the system entirely for most of the day for free. The geothermal system reduces the reliance upon fossil fuels by eliminating gas for the system altogether and reducing reliance upon electricity.”
Producing more energy than the hospital consumes on a sunny day (Image: supplied)
367 kilowatts of Solar panels installed across Lithgow Hospital (Photo supplied)
The geothermal heating comes with a high capital cost for residential buildings, estimated between $15,000 and $40,000, but has low running costs as you get free energy from the ground up and it will pay for itself in about 8-18 years. It is not only possible in new homes but can also be retrofitted in existing homes as the pipes don’t need to be directly under your house.
In Europe, geothermal heat pump technology is used more commonly. In Belgium, up to 50% of new homes being built use this system, facilitated by government subsidies. There is even a debate going on about making this technology mandatory for new homes.
It was great to see these economically beneficial energy systems which help address the current ecological challenges. The geothermal heating system provides cleaner energy and saves money for the hospital at the same time. Added benefits of using geothermal for air conditioning in the hospital include eliminating noise and the risk of Legionnaires disease.
I will be looking further for other initiatives that pique my interest while staying here in Lithgow and learning more about the beautiful Blue Mountains region.
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This story has been produced as part of a Bioregional Collaboration for Planetary Health and is supported by the Disaster Risk Reduction Fund (DRRF). The DRRF is jointly funded by the Australian and New South Wales governments.
News From Around The Region
Some of the most popular activities we`ve run over the last year have been our plant-based cooking demonstrations. If you`d like to learn more about how to prepare meals that are cheaper, healthier and better for the planet, Teja Brooks Pribac from PlantInspired will be demonstrating how to use pantry essentials to create delicious and healthy plant-based meals tomorrow: Friday 6 December at Junction 142 in Katoomba. Ph. 0434 691 496
#plantbased #planetaryhealth #planetaryhealthdiet #cookingclass #katoomba #bluemountains
If you`ve heard about how inspiring and fun our Skillshare Saturdays are with our free Upcycling Fashion workshop from 9am to 3pm, our Wildlife Exhibition from 9am to 1pm, and our Bushcare to regenerate the Planetary Health Precinct at 1.30pm, there`s still one more opportunity in 2024 to come along and join in, this Saturday 7 December. Well be having some delicious Christmas nibbles to celebrate the end of a very productive year and all are welcome. The Planetary Health Centre is at 33-39 Acacia St Katoomba. Bookings for Upcycling essential (link in profile). To find out more about joining Bushcare ring 0407 437553 #upcyclingfashion #bushcare #planetaryhealth #learntosew #patternmaking #katoomba #bluemountains #natureconnection #wildlifeexhibition #birdphotos #wires
The inspiring Lyrebird Festival kicks off in the Megalong Valley this evening and runs until Sunday 17th November. Enjoy a weekend of music, art, food, wine, talks and nature walks as The Bowerbird Collective brings together art, science, conservation and world class music performances. All events can be booked separately or together with a Festival pass. Pricing includes a `Pay what you can` option.
The Lyrebird can be heard in the Megalong Valley imitating the calls of hundreds of other species, as well as producing their own thrilling sounds. The festival also includes a very special film screening of The Message of the Lyrebird on Sunday afternoon.
Tickets available here: https://bit.ly/3AON8In
(or at link in profile)
#megalongvalley #lyrebirds #lyrebirdfestival #bowerbirdcollective #bluemountains #planetaryhealth
In April 2021 Blue Mountains City Council became the first local government in Australia to adopt a motion to integrate Rights of Nature principles into its operations and practices. Today the Blue Mountains Planetary Health Initiative, the Blue Mountains World Heritage Institute and lawyer Kingsley Liu, had the great pleasure of workshopping further ways to implement Rights of Nature with this inspiring group of Law students from the University of New South Wales.
#rightsofnature #UNSW #lawstudents #planetaryhealth #bluemountains
At our World Animal Day event we launched the Community Supporting Community Program with a plant based cheese degustation. Teja Brooks Pribac from PlantInspired is now offering interactive classes in which you can have fun learning new techniques for using vegetables to create delicious meals that are good for your health and the health of the planet. Small groups: 6-8 people. $65.50pp. Bookings essential.
Classes currently on offer:
Plant-based cheese making & demo
Saturday 9 Nov, 1-3pm. Lawson NSW: https://www.facebook.com/events/1274663973560691
[DATE CHANGE!] The Tastemaster: how to turn your average vegetable into a mouthwatering masterpiece
Sunday 17 November, 11am-2pm. Katoomba: https://www.facebook.com/events/517611447925601
End of year special: plant-based cooking essentials 2-class bundle
Saturday 30 November, Sunday 1 December, 11am-2pm. Katoomba NSW: https://www.facebook.com/events/1116156823213312
Cooking with seitan
Saturday 7 December, 11am-2pm. Katoomba NSW. https://www.facebook.com/events/1553960262666738
PlantInspired is also offering interactive plant-based cooking classes and demos for individual clients, private groups and businesses. Choose from a range of preset classes or get in touch to tailor your own.
All profits utilised to help vulnerable members of the community through the Community Supporting Community program. Check the website for more info: www.plantinspired.com.au (link in profile)
#plantinspired #plantbasedcooking #vegan #community #planetaryhealth
Skillshare Saturdays literally offer a `breath of fresh air` at the Planetary Health Centre on the first Saturday of the month! At our free Upcycling Fashion workshop this month you can learn more about all types of zips and how to do basic pockets and pocket flaps. You can bring your own sewing machine or use one of ours. And at Bushcare in the afternoon, you can immerse yourself in the bush at the Planetary Health Precinct as you help restore habitat and protect biodiversity (while meeting some great people and enjoying time in nature). Bookings essential for Upcycling Fashion at Eventbrite here: https://bit.ly/4dZWUoM (link in profile)
If you`d like to join our Bushcare Group contact Karen Hising at khising@bmcc.nsw.gov.au or call the Bushcare Office on 4780 5623
#upcyclingfashion #skillshare #planetaryhealth #bushcare #community #togetherwecan #zerowaste #regeneration #circulareconomy
As 190 countries gather for the @cop16colombia UN Biodiversity Summit, to focus on how we can protect the world’s flora and fauna, we’d like to thank all those local individuals and organisations dedicated to the same goal who came together for World Animal Day at the Blue Mountains Planetary Health Centre on Saturday 5 October. They offered ways for everyone to learn more and take action. From the Blue Mountains Bird Observers, who led over 40 people on a guided Breakfast with the Birds walk, to many others who offered information stalls, talks, workshops, a Wild Life exhibition, live music, plant-based food and hands-on Bushcare. We also launched the Community Plant Based Cooking Project with the first class to be held on Saturday 9 November at @roseyravelstonbooks in Lawson. Places are limited. Learn more here: https://plantinspired.com.au/
#worldanimalday #biodiversity #plantbased #planetaryhealth #bluemountains #katoomba
Did you know that old lino, window putty, and adhesive can contain asbestos? Yesterday the Asbestos & Hazardous Materials Management Conference kicked off with a pre-conference workshop at the Blue Mountains Planetary Health Centre. It included hands-on `spot the asbestos` and asbestos sampling sessions. This year`s theme is `Working together for a safe and healthy future`. #asbestos #hazardousmaterials #conference #planetaryhealth #bluemountains #katoomba
Delicious plant based and gluten free pastries courtesy of Clean Cravings at World Animal Day today at the Blue Mountains Planetary Health Centre. Such a lovely day! #planetaryhealth #worldanimalday
Paul Nagle and other members of the Blue Mountains Bird Observers leading 40 people on a Guided Breakfast with the Birds as part of World Animal Day at the Blue Mountains Planetary Health Precinct. It`s a stunning day. Lots more to come at 33-39 Acacia St Katoomba.
A huge thank you to Josh Logan from Logan Signs, Lithgow, for installing our Circular Water Signage in time for our World Animal Day Celebration today at the Blue Mountains Planetary Health Centre (33-39 Acacia St Katoomba). We have a full program of events with lots of information on how to prepare for the summer ahead and how to create urban areas that help us share our home respectfully with all species. It will be a fun family day too with storytime, craft and live music for kids! (Link in profile) #worldanimalday #planetaryhealth #familyday #katoomba #bluemountains
And our Wild Life exhibition is now up for World Animal Day tomorrow at the Blue Mountains Planetary Health Centre. Photographs by Warren Hinder, Merryl Watkins, Holly Kent and Tracy Burgess. Check out all the other events from stalls, talks, possum box demo, kid`s craft and animal storytime, plant based food and live music to Bushcare. @33-39 Acacia St Katoomba Link in profile. #planetaryhealth #worldanimalday #katoomba
