Small Arena Install (Screw or Recip?)

[olympiaman]

Hi Guys,
We are doing a renovation of a small arena. Consultants are pushing two for small (40hp) bitzer microscrews. Wondering your thoughts. We are on rural power and quite often lose a phase. Wondering if microprocessor driven units are a good idea. Thanks.

[Magoo]

specify phase failure protection and power surge/sag protection.

[Segei]

Saw several arenas with recip. compressors. They work well. Usually, small screws less efficient than big screws. Part load operation of the screws is not efficient as well.

[olympiaman]

Thanks Magoo. That is an excellent idea.

[olympiaman]

Segei can you believe the solution they have to partial load is to keep them loaded by using them to heat building!

[Magoo]

Hi
Recips are probably more practical in a rural location, from a serviceability point of view, stripping a mini screw usually done by specialists, and needs shipping away for repairs. Where as a local tech can change valve plates etc., on a recip on site.

[Segei]

I know that CIMCO have eco-chill system. This system use less natural gas for heating, but much more electrical energy, because it operate at high condensing pressure.