Having good room ventilation to dilute and disperse indoor air pollutants has long been recognized, and with the Covid-19 pandemic its importance has become all the more heightened. But new experiments by indoor air researchers at Lawrence Berkeley National Laboratory (Berkeley Lab) show that certain circumstances will result in poor mixing of room air, meaning airborne contaminants may not be effectively dispersed and removed by building level ventilation.
Our planet’s oceans, forests, and soils perform a valuable service, absorbing half of our carbon dioxide emissions. But the more that our planet warms, the more these so-called “carbon sinks” weaken in their ability to perform this service. If we continue our current trajectory of high emissions of greenhouse gases, by the next century not only will oceans and forests absorb less carbon dioxide, but they could also even reverse their role and become carbon sources.
Air pollution from the burning of fossil fuels impacts human health but predicting pollution levels at a given time and place remains challenging, according to a team of scientists who are turning to deep learning to improve air quality estimates.
Honeywell will fund research by Syracuse University’s College of Engineering and Computer Science on emerging indoor air quality technologies to create healthier and safer building environments.
We see ourselves as partners of these sectors. Messe Frankfurt has been working closely together with the sanitary and HVAC sector for many years. Every two years, the whole industry meets to hold discussions and do business at ISH, the world’s leading trade fair for HVAC + Water. This year, it will be held as scheduled from 22 to 26 March but as a digital event. In this interview, Wolfgang Marzin emphasises the importance of ISH digital for the sector and offers insights into the programme of events.
With emphasis on live interactive small groups, the full technical programme, featuring more than 120 sessions, will be presented at the 2021 ASHRAE Virtual Winter Conference, running from 9-12 February.
The report summarises the basic approach of the Daikin Group for contributing to the realisation of a sustainable society through its business along with fiscal 2019 results and future plans.
By Mike Schaefer
I read with great interest the article on indoor ACs in the April 2020 RACA Journal. Since the introduction of outside air is not the only drawback;
I would like to add more factors on this matter.
Compiled by Benjamin Brits
With patents recorded as far back as the early 1900s, the concept of this cooling mechanism was in fact developed in ancient times and used in Egypt and Persia by collecting and passing air over a subterranean water source.