Taking a Megabyte out of our Energy Bills!

I never thought such huge savings would be possible from a replacement of a ten year old computer system, but here we are. Normally when I think of energy savings opportunities, I think of HVAC equipment replacements, Variable Speed Drive installations, improvements to control sequences, lighting upgrades, and even electric vehicles. So, when I spoke to a company that said we could achieve big savings by upgrading computer infrastructure I was intrigued.

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Spring Greening

Now that we are groggily emerging from our hibernation of sitting on the couch in a Snuggie and binge TV watching while eating cookie dough ice cream, it’s time to think about spring cleaning. On second thought, sweeping the garage, sorting old junk, and throwing mittens in a drawer sounds awful – let’s talk about spring greening instead! Here are a few tips for an energy efficient spring and summer: Continue reading

UHN: A Medical Innovator, But Also An Energy Innovator

My previous blog described a unique energy conservation project at UHN’s Princess Margaret Cancer Research Tower (PMCRT). With innovative contaminant sensing technology, we were able to convert our research lab exhaust system from constant flow to variable flow, which significantly decreased loading on the exhaust fan motors. As described in the blog, this change produced a reduction in electricity peak demand (kW) of 38.5% and reduction in overall annual electricity consumption (kWh) of 42.7%.

We thought this was a Continue reading

Savings at PMCRT will Blow You Away!

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Princess Margaret Cancer Research Tower. Photo Credit

Next in our list of exciting energy endeavors, this blog will discuss huge savings realized by a retrofit to the laboratory exhaust system at the Princess Margaret Cancer Research Tower (PMCRT). The lab exhaust system has been converted from constant speed to demand controlled to ensure more efficient operation. I’ll get into all the super interesting details below, but the best part is the savings so I’ll start off with that. Continue reading

Grizzlies, Mountains, and Sustainability! Reporting from the CHES Conference

Grizzlies, mountains, and sustainability! Earlier this week, I had the opportunity to attend the Canadian Healthcare Engineering Society (CHES) annual conference, hosted in beautiful Vancouver. The theme of this years conference was sustainability in healthcare. This theme refers to both systemic sustainability and environmental sustainability, with the goal to preserve health care services as well as the natural environment so that you’ll be able to get a timely appointment for your tennis elbow injury suffered during a round of frisbee golf and so that grizzlies can continue to survive in their natural habitat.

UHN had great Continue reading

Water, Water Everywhere, but Not a Drop to Cool Refrigeration Equipment!

In my last cold beverage related… ehh… I mean refrigeration related blog, we learned about complicated stuff like how the refrigeration cycle works and how water savings can be achieved by retrofitting old systems. Since we’re all experts already, I’ll skip all the boring techno-babble and get straight to the good stuff.

Our old refrigeration system at Toronto Rehab’s Bickle Centre used domestic water to cool the refrigeration condensers, meaning that to keep our fridges cold we were continuously pouring water down the drain. How much water? I’m glad you asked because we set up an ultrasonic flow meter on the discharge line to measure just how much water (and $$$) we were sending down the drain.

Power showers are pouring £18,000 down the drain in a person's lifetime Continue reading