- Mari Macnamara
- Refrigeration
- Hits: 108
Researchers experiment with twisted refrigeration
A team of scholars from American and Chinese universities have discovered a new refrigeration technology based on twisting and untwisting fibres.
- Mari Macnamara
- Refrigeration
- Hits: 99
Looking at alternative refrigerants for supermarkets
In an effort to educate the industry about the viability of using natural refrigerants for commercial refrigeration equipment, professionals shared their expertise at the ATMOsphere America conference.
- Mari Macnamara
- Refrigeration
- Hits: 231
How to test refrigerant charge without gauges
Bryan Orr, HVACShool.com founder, provides HVACR technicians with an in-depth description of smart, non-invasive test procedures. He shares his experience…
- Mari Macnamara
- Refrigeration
- Hits: 237
What are we doing about climate change?
During June 2019, the Western Cape Government Environmental Affairs and the Bavarian State Ministry of the Environment and Consumer Protection hosted a technical workshop in Stellenbosch on ‘Green Cooling Solutions’. By Andrew Perks.
- Glyniss Bone
- Refrigeration
- Hits: 155
Reciprocating vs screw compressors – how do you choose?
By Russell Hattingh, engineering manager at Johnson Controls Systems and Service, South Africa.
What would you choose for your HVAC&R applications: reciprocating or screw compressors?
The age-old debate continues.
- Mari Macnamara
- Refrigeration
- Hits: 194
Questioning ice and water theory
The unexpected observation of ice at low temperature and high pressure through an experiment designed to create a super-cold state of water, scientists used neutron scattering to discover a pathway to the unexpected formation of dense, crystalline phases of ice thought to exist beyond Earth’s limits.
- Mari Macnamara
- Refrigeration
- Hits: 345
Who can issue an HVAC&R CoC?
Non-registered practitioners are not permitted to issue a CoC. Any such person issuing a certificate would be doing so illegally in terms of the OHS Act and Pressure Equipment Regulations.
By Barney Richardson, director of SARACCA
- Mari Macnamara
- Refrigeration
- Hits: 205
Refrigeration can save bee colonies
According to Cooling Post, researchers are using refrigeration to help fight the parasitic varroa mite, a suspected cause of bee colony collapse. By placing colonies in refrigerators, the queen stops laying new eggs, which stops the production of brood.
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