Iwaki 100 Alternative Suggestions
- Thread starter skairik
- Start date
Fiziksgeek
New member
What is the pump being used for?
There are several pumps which may produce the same flow (or more) assuming low head pressure. However, if you are using it in a high head situation, there may not be much you can do.
There are several pumps which may produce the same flow (or more) assuming low head pressure. However, if you are using it in a high head situation, there may not be much you can do.
wife no likey
New member
A Sequence marlin is slightly less. Personally I'm thinking of replacing mine with the new Iwaki MX series, which is about 100w less supposedly.
Pete
Pete
jdieck
New member
I would not judge power consumption by neither the advertising nor the motor HP rated capacity.
Centrifugal pumps power changes depending on the operating conditions oc the combination discharge pressure vs flow.
One pump could be more eficient than another at certain segment of the Head vs flow curve and less efficient at another segment. In other words the power consumption is independent of the motor capacity and more dependent on the rpms and the impeller/volute design.
Given the safety margin built in the motor's insulation it is not uncommon to find pump designs that overloads the motor taking more power than it should. When the marketer states wattage it is basically what the motor manufacturer says it will which may be way diffeent of what the pump will take.
Unfortunately manufaturers do not publish the power curve plot or efficiency curve required to determine power consumption and efficiency.
Power consumption between a 1/4 hp and a 1/3 hp pump operating 7/24 (Assuming all the power is used) is equivalent to a difference of only $3 to $4.00 per month in power consumption.
As the power consumption difference is relatively small at these capacities I would rather select the pump based on easy of maintenance, fitness to do the job and mechanical properties.
A pump failure can pay back many months of power difference.
Centrifugal pumps power changes depending on the operating conditions oc the combination discharge pressure vs flow.
One pump could be more eficient than another at certain segment of the Head vs flow curve and less efficient at another segment. In other words the power consumption is independent of the motor capacity and more dependent on the rpms and the impeller/volute design.
Given the safety margin built in the motor's insulation it is not uncommon to find pump designs that overloads the motor taking more power than it should. When the marketer states wattage it is basically what the motor manufacturer says it will which may be way diffeent of what the pump will take.
Unfortunately manufaturers do not publish the power curve plot or efficiency curve required to determine power consumption and efficiency.
Power consumption between a 1/4 hp and a 1/3 hp pump operating 7/24 (Assuming all the power is used) is equivalent to a difference of only $3 to $4.00 per month in power consumption.
As the power consumption difference is relatively small at these capacities I would rather select the pump based on easy of maintenance, fitness to do the job and mechanical properties.
A pump failure can pay back many months of power difference.
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