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Frost can wreak havoc on a heat pump system and eliminating this risk is a key step in their widespread adoption here in Canada. (Joseph Cress/Iowa City Press-Citizen via AP)

New research may point the way towards frost-free heat pumps

Heat pumps are essential for the large-scale adoption of more carbon friendly heating systems and recent research suggests a way forward for reducing one of the technology’s biggest hurdles — frost.
Extreme heat can affect how well machines function, and the fact that many machines give off their own heat doesn’t help. AP Photo/Abdeljalil Bounhar

Machines can’t always take the heat − two engineers explain the physics behind how heat waves threaten everything from cars to computers

People aren’t the only ones harmed by heat waves. The hotter it gets, the harder it is for machines to keep their cool.
Just generating heat is not enough. We must also capture, store, and utilize waste heat year-round and especially in the winter months. (AP Photo/David J. Phillip)

Why we need to reuse waste energy to achieve net-zero heating systems

As the drive towards electrification advances, one fact seems clear: it is far easier to reuse waste heat for our homes and businesses than it is to generate it anew.
Buildings consume more energy when empty or partially occupied for extended periods because they are designed to depend on human interactions. (Shutterstock)

Empty buildings consume more energy than you think

Buildings are designed for people to live in, but what happens when no one is present or only half of the occupants are there?
A worker is seen cleaning surfaces inside a long-term care home. THE CANADIAN PRESS/Darryl Dyck

Omitting indoor air quality from COVID-19 guidance for shelters and long-term care homes is a grave mistake

Residents of group homes and long-term care are at high risk for COVID-19. But an important aspect has been left out of Public Health Ontario’s guidance for these facilities: indoor air quality.
Toronto Public Health’s tool kit for COVID-19 prevention in congregate living settings contains few references to ventilation, air filtration and other measures to prevent airborne transmission. THE CANADIAN PRESS/Cole Burston 

How safe are Ontario’s shelters and other shared living settings from airborne COVID-19?

Because COVID-19 is airborne, we can’t know if the shelter system is as safe as it should be without seeing metrics related to ventilation, filtration and occupancy.
We’ve learned much more about the novel coronavirus over the last few months, including that most spreading events occur inddoors. (Shutterstock)

How to prevent COVID-19 ‘superspreader’ events indoors this winter

As the coronavirus pandemic continues, and the colder weather approaches, new mathematical models are needed to study changing social behaviours and indoor spaces.
Someone’s too hot and someone’s too cold. Collage by The Conversation, combining images by Monika Wisniewska and Antonio Guillem/Shutterstock.com

Offices are too hot or too cold – is there a better way to control room temperature?

Everyone has a different ideal temperature at any given time. It could be more comfortable to monitor people’s body temperatures and adjust heating and cooling in response.

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