Why would you wanted smaller dimension of pontoon? Pontoon is frequently the main cost for pump system. If we can have a smaller dimension of pontoon, it will, eventually, lower down you initial equipment cost for sure. On part of that, some application really needs smaller dimension of pontoon because limitation of space and avoid water traffic being disturb. Harbour dredging is a very good example for that.
What is the one of the main factors that causes the dimension of pontoon for a dredging pump system? The answer is the dimension and weight of hydraulic power pack. The higher the dimension and weight for hydraulic power pack, the larger and higher draft of pontoon you will be needed.
As the rule of thumb for pump, the higher power capacity of pump you use, the heavier and bigger hydraulic power pack we will be needed. But what most of the people do not know is, the type of pump that you use will also possess the big influence on the dimension and weight of hydraulic power unit. Bingo, you are right, the type of pump are either hydraulic dredging pump or electric sand pump. Let me explain to you with example below.
Power Supply To Power A 55kW Pump System
Power Supply To Power A 90kW Pump System
From the diagram above shows that to power electric pump system, you will need approximately 2 times bigger dimension and weight of hydraulic power pack compare to hydraulic dredging pump. This is due to high starting current needed in the electric pump system. Eventually, you will need bigger dimension of pontoon. Also, in the sense of long term, the operating cost for the electric pump is slightly higher than hydraulic pump system.
Gain material capacity by using the correct pump, read more on Are You Using The Correct Pump?
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