HVAC&R Nation

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February 2009

 

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Skating on a natural alternative

(full article)

With strong prohibitive regulations for HCFC refrigerants due in less than 10 years, European operators of winter sporting facilities are facing new challenges. Yet two European facilities and a Middle Eastern winter wonderland are already ahead of the pack, using natural refrigerants in their worldclass venues.

 

Club bowls up geothermal solution

(full article)

The innovative redevelopment of an inner city lawn bowls club will see the deployment of geothermal technology to deliver energy efficient heating and cooling to its club rooms, as Sean McGowan reports.

 

Refrigeration piping selection - get it right 

(full article)

The selection and installation of refrigeration piping continues to be the source of concern and frustration to many members of the industry. Not only can it lead to inefficient system operation and performance, but in some cases it can also lead to the voiding of manufacturer warranties, which in turn damages the reputation of the industry in the eyes of consumers, as Sean McGowan discovered.

 

Skills workshop: Centrifugal pumps - Introduction to cavitation and Net Positive Suction Head (NPSH)                                                                           

(full article)

This is the final instalment in HVAC&R Nation’s series on centrifugal pumps. During 2008, the skills workshop featured the first two parts; pump selection and speed variation. This month we round out the series and explore cavitation and Net Positive Suction Head (NPSH).

 

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