Thermistors are resistors that react to temperature changes. Two categories exist: thermally sensitive silicon resistors and polycrystalline ceramic materials
Pumping stations in sewage collection systems are normally designed to handle raw sewage that is fed from underground gravity pipelines.
Changing the revolutions of the pump to a lower or higher speed will change the pump curve
Pumps in parallel will increase Q
Pumps in series will increase the head
PUR foam is used for insulation of almost all cooling pipes and cooling installations due to its impermeability. It is therefore used extensively in the production of insulation jackets for pipes, fittings, etc.
The pump performance curve shows the relation between flow and head.
A radial fan is a device that consists of an impeller driven by an electrical motor. The rotation of the impeller sets the air in motion and air is sucked in from the inlet on the side of the fan and blown out of the outlet of the fan.
Radiant heat is thermal radiation between two surfaces. Thermal radiation occurs when a material transmits infrared radiation, thereby warming a second material, without causing the air around the materials to be heated.
A radiator is a heating surface that transfers a significant part of its heat by thermal radiation and the rest by convection.
