Powerful compressors drive cooling research

GEA Grasso screw compressors for the compression of helium gas are playing a crucial role in one of the world’s largest construction projects for cutting-edge international research. The compressors are part of the FAIR (Facility for Antiproton and Ion Research) particle accelerator facility for cooling superconducting magnets. The order placed…

Certificates of Conformity via App

On January 20, 2023, Posted by , In News, By ,,, , With 1 Comment

This article continues on from the previous column dealing with CoCs via the online App. The online app can be downloaded from the Play Store using a tablet or smart phone. Search for the SAQCC Gas CoC and proceed with installation. You will be asked if you are registered in…

Building HVAC and PV-powered thermoelectric cooling

Scientists have proposed a way to combine thermoelectric modules (TEMs) with rooftop PV to support HVAC function in buildings. They designed a wall-integrated TEM to heat and cool adjacent rooms. An Australian-Indian research group has looked at how thermoelectric modules (TEMs) and PV could be combined to provide heating, ventilation and air…

Debate on air conditioning as a basic right

Is access to cool air a human right in today’s environments? Canada is debating the question, and climate activists aren’t the only ones pressing the issue. A coalition representing private and public sector interests – including insurance companies, the Canadian Chamber of Commerce, the Federation of Canadian Municipalities and the…

Indoor CO2 tool can help assess ventilation and indoor air quality

A key ingredient for good indoor air quality is good ventilation. One simple method that can be used to determine if a space is well ventilated is to measure indoor carbon dioxide (CO2) levels. This greenhouse gas drifts through more than just our skies. CO2 can be found in the buildings…

CESA challenges decision to cancel tenders

Consulting Engineers South Africa (CESA) is challenging the recent decision by the SANRAL Board to cancel critical infrastructure tenders on the basis that “their adjudication process was flawed due to the involvement of design engineers in the tender adjudication process”. Chris Campbell, CEO of CESA. Image credit: CESA Chris Campbell,…

Responsible Refrigeration No 73

With the now ever increasing use of flammable refrigerants Practitioners must be very aware of the safety requirements when working on refrigeration units using these gases. This was mentioned in a previous article, I wonder who took the time to read this and absorb and understand the dangers. We’ve been…

HVAC design adaptations sparked by the pandemic

The COVID-19 pandemic has sparked a change in HVAC engineering, particularly in medical buildings. Hospitals for instance, were not originally designed to operate with numerous potentially infectious people walking through the doors. However, early in the pandemic, Aspen Medical constructed a 51-bed surge centre in just 37 days. Every bed…