Table of Contents
What is the difference between BWR and Phwr?
In BWRs (boiling water reactors) and PWRs (pressurized water reactors), collectively known as LWRs (light water reactors), the light water (H2O) coolant is also the moderator. PHWRs (pressurized heavy water reactors) use heavy water (deuterium oxide, D2O) as moderator.
Which is better Phwr or PWR?
PHWR reactor fuel is cheaper as it utilizes naturally available uranium as reactor fuel. The regular water (H2O) that is used as coolant-cum-moderator in PWR is abundantly available and is cheaper. The heavy water (D2O) that is used as coolant and moderator in PHWR is highly expensive.
Is PWR more efficient than BWR?
Another advantage is that the PWR can operate at higher pressure and temperature, about 160 atmospheres and about 315 C. This provides a higher Carnot efficiency than the BWR, but the reactor is more complicated and more costly to construct. Most of the U.S. reactors are pressurized water reactors.
Why are pressurized water reactors better?
Pressurized water reactors have advantages over the other light water reactors and earlier generation nuclear sites. [3] In addition, the core of the reactor contains less fissile material, decreasing the chances of additional fission events to occur, making the reactor safer and more controllable. …
What does a pressurized water reactor do?
The pressurized water reactor (PWR) is a type of nuclear reactor used to the generate electricity and propel nuclear submarines and naval vessels. They make use of light water (ordinary water, as opposed to heavy water) as their coolant and neutron moderator.
Why is pressurized water reactor safer than boiling water reactor?
[1] One major advantage of this reactor is that it is easy to operate because less power is being produced as the heat increases. [3] In addition, the core of the reactor contains less fissile material, decreasing the chances of additional fission events to occur, making the reactor safer and more controllable.
How efficient is a boiling water reactor?
With maximum operating temperatures of around 285oC, the Carnot efficiency (maximum efficiency) of boiling water reactors in the production of power is 46\%. However, the realistic efficiency of these reactors in power production is around 33-34\%.
Which is safer BWR or PWR?
Since the fluid is maintained at high pressure, so the PWR core volume is less. For the same power generation, core volume of the BWR is comparatively larger. Since the working fluid loop is separated from the primary loop, so PWR is less risky in spreading of radioactive materials owing to leakage.
What is the advantage of Pressurised water reactor?