Pumps for the Power & Energy industry
Thai Khuong Pumps offers centrifugal pumps and pumps as turbines for industrial applications and processes in the power industry.
Current State of the Power Industry
- Evolving energy demand and energy fuels are altering the economics of power plant operations.
- Regulations are emerging that create both compliance obligations and compliance opportunities for power utilities.
Solution Pumps for the Power & Energy industry
Optimization of plant systems is the key to achieving increased plant efficiency. To improve the efficiency of any motor-driven pump system one must take the entire system into account. Focusing on individual components (motor or pump) for efficiency improvements can in many cases actually reduce the overall system efficiency and potentially the reliability.
What is System Optimization?
“The process of identifying, understanding, and cost-effectively eliminating unnecessary losses while reducing energy consumption and improving reliability in systems.”
What does this mean in a fossil power plant?
For pumping applications, it means operating at or near the pump’s best efficiency point.
Basic Centrifugal Pump Facts
- Centrifugal pumps should be selected and normally operated at or near the manufacturer’s design rated conditions of head and flow.
- Any pump operated at excess capacity, i.e. at a flow significantly greater than BEP and at a lower head, will surge and vibrate, creating potential bearing and shaft seal problems as well as requiring excessive power.
- When the operation is at reduced capacity, i.e. at a flow significantly less than BEP and at a higher head, the fixed vane angles will now cause eddy flows within the impeller, casing, and between the wear rings. The radial thrust on the rotor will increase, causing higher shaft stresses, increased shaft deflection, and potential bearing and mechanical seal problems while radial vibration and shaft axial movement will also increase.
Energy efficiency is as much about improving a system’s reliability as it is about reducing energy costs. Why? Optimum efficiency reduces damage from heat and vibration thereby lengthening the mean time between repairs, in power industry terminology Uptime, Availability, and Reliability.
As mentioned earlier, due to current electricity market conditions, many power plants no longer operate at base-load capacity therefore, the plant motor-driven (pump) systems are forced back on the curve and away from BEP (reference pump/system curve).
VFD’s on pumps (and fans) can greatly enhance plant performance at off-peak loads. VFD’s as motor/system controllers offer many substantial improvements to electric motor power requirements. The drives provide benefits such as soft starts, which reduce the initial electrical load, excessive torque, and subsequent equipment wear during startups /shut-down; provide precise speed/process control, and enable high-efficiency operation of motors providing unity power factor as well as maintaining pump BEP at reduced load.
Operation flexibility for pumps in power applications
Matching a pump to the different combinations of delivery rate and head in a power plant requires a range of impellers, each with its specific speed. However, even with a range of impellers, there are often daily occasions that call for something in between the standard impeller designs.
Before a vertical line shaft pump, as the cooling water pump is installed, we select the impeller design and set the angle of the blades to meet the specific process requirements. Power plants, however, commonly experience changes in the cooling water flow rate and head (e.g. day/night operations or tidal fluctuations). There are typically two ways to achieve the needed operation flexibility in pumps: speed control with a frequency converter or hydraulic impeller blade adjustment.
Thai Khuong Pumps delivers pumps with either type of adjustment. The framework of the specific application such as the range of fluctuation in delivery rate and head, other installed equipment, or budget available plays a significant role in whether a frequency converter or a hydraulic impeller blade adjustment is more suitable. Our specialists at ANDRITZ will help in the evaluation and selection.
Pumps as turbines for the power industry
Are you looking for energy-saving solutions or for solutions that produce energy? Small hydropower plants, and thus independent power generation, are suitable for the private as well as the municipal sectors, and for industrial and commercial facilities.
Save energy with pumps from Thai Khuong Pumps used as turbines.
For more information on our pumps as turbines for the power industry please have a look at our product pages below, brochures in the sidebar or contact us directly. Talk to one of our friendly pump experts on +84 941 400 488 or email us on email@example.com