About Richard Chirgwin

A big problem with ducted air-conditioning is the ducts compromise the thermal envelope of the room, wasting precious energy. A new Australian invention solves that problem.

An asthma attack following a child’s night-time popcorn mishap set Adelaide engineer Dean McGurgan wondering why, in his ducted-aircon-equipped home, he even copped smoke exposure all the way from the kitchen to the bedroom.

And that set him on a development project he reckons could save money for others with ducted air-conditioning. [Read more…]

With a smart 3rd party controller, your air conditioner can help a solar-laden grid balance supply and demand.

While regulators fret about the impact of solar power on low voltage distribution networks, developers are looking at ways to use household loads to relieve the stress.

Last week, I chatted to an NZ-founded company called Paladin, whose focus over the last four or five years has been a controller that diverts excess power from PV to a customer’s electric hot water service. [Read more…]