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What a motor need to be able to get connected to VSD?

What a motor need to be able to get connected to VSD?

What a motor need to be able to get connected to VSD?

(OP)
I am not an electrician....I want to purchase an evaporative air conditioner which the air flow can be adjusted by a VSD. Could that be done to any evaporative coolers out there?

RE: What a motor need to be able to get connected to VSD?

I am no expert in this field, but I think you need to make sure that the chiller is able to modulate. The VSD will change the air flow of the ventilator fitted on to your evaporator. This means the cooling drawn from your evaporator will fluctuate along with the VSD, thus your chiller will have to modulate along with the VSD.

RE: What a motor need to be able to get connected to VSD?

(OP)
By evaporative cooler I mean swamp cooler

RE: What a motor need to be able to get connected to VSD?

You can vary the airflow with a VSD, but it will have unpredictable results.
Motors used with VSD should be designed for use with VSD.

RE: What a motor need to be able to get connected to VSD?

check with motor manufacturer

RE: What a motor need to be able to get connected to VSD?

Evaporative coolers are typically Constant Volume type air systems (used in wide open spaces), Not Variable Air Volume type, VSD's are for VAV only, not CV.

RE: What a motor need to be able to get connected to VSD?

(OP)
there are many variable speed evaporative coolers out there

RE: What a motor need to be able to get connected to VSD?

in what kind of application Mehdi?

RE: What a motor need to be able to get connected to VSD?

(OP)
commercial.... The one that I am about to use it is a commercial kitchen

RE: What a motor need to be able to get connected to VSD?

You really need Variable volume for a commercial kitchen using evaporative cooler?
Can you really have a descent pay-back on the VAV system and controls compared to the energy saved? you're talking what? 3 Hp? 5 HP motor?

RE: What a motor need to be able to get connected to VSD?

(OP)
5500 l/s

RE: What a motor need to be able to get connected to VSD?

Just what I thought, anywhere between 3 and 5 HP between 1" and 1.5" SP for such systems.
Nowhere in hell can you have a payback for such a low BHP, not even talking about the additional maintenance and trouble of controls.
You should keep it cheap and simple and go CV pal.

RE: What a motor need to be able to get connected to VSD?

(OP)
thanks mate...will investigate the $ figures ...electricity in Australia is the most expensive in the world;)

RE: What a motor need to be able to get connected to VSD?

Not so much an issue of $ here.It is about comfort and noise level.I do not know what is the kitchen size here.Assuming it is 6mx6m,that is 153 litres of air per sq.meter with its resultant drafts and noise.When you are cooking,you need it.When you are done with cooking,spare the guys from the turbulent blast of air!

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