
2 minute read
Quoteyard
from CCME July-Aug 2022
by ccme.news
We bring you a collection of some of the most interesting quotes, extracted from articles in this issue. In case you missed reading, we recommend you flip back to take full advantage of the insights and remarks, in the context in which they have been presented.
p06 One of the anomalies in the current Building Code is there is no requirement for annual “check-ups” on ventilation systems – except for critical healthcare spaces, such as operating rooms. Any engineer or contractor can attest to the mad rush we experience to ensure buildings “meet Code” before an occupancy certificate is granted.
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The industry data proves it is more efficient to operate more VFD chillers running at part-load versus fewer chillers at or near full-load, even with the extra pumping costs associated with this practice, to save energy. Base-loading a chiller, or chillers, is no longer the best practice.
p21
There has not been much innovation in materials, except that many manufacturers are touting glass wool as an insulator instead of fibreglass and trying to take away the latter’s share. If we focus only on the HVAC market, there’s hardly any innovation, apart from pre-insulated glass wool ducts entering the market.
p34
Even though our leading position is very well received and respected, many customers expect Chinese manufacturers to offer lower prices for their equipment. The key to changing this is constantly delivering reliable and efficient products that offer better performance. p39
When it comes to migrating to more digital solutions, smart homes and green buildings, using a VFD is the most reliable solution to improve Mean Time To Repair (MTTR) and Mean Time Before Failure (MTBF). p23
They are now doing the retrofitting and recommissioning of existing buildings, and they are routinely finding that there are 30% savings from an energy standpoint by just getting the buildings back the way they were supposed to operate. p32
The Chinese government has proposed a specific timetable for peak carbon dioxide emissions and carbon-neutrality, which provides a substantial driving force for improving efficiency in China’s air conditioning industry. With this, major Chinese manufacturers are also playing a role in the standardisation of air conditioning systems.
p40
A decade ago, I said there was no way to measure VRF; however, today, they carry efficiency certificates. But most of these are air-side measurements. When it comes to measuring refrigerant’s efficiency, there is no precise data. p48