Impellor
An impellor (also spelt impeller) is a bladed rotor, most often used to describe an apparatus used to increase pressure and flow of fluids. It is also the term used to describe the central bladed component of a fan which is used to increase pressure and flow of air. In general there are axial impellors, which increase flow on the same axis as the incoming flow feed and centrifugal impellors, which increase flow at an angle to the incoming flow (normally 45 degrees).
Impellors are a key component of any pump system and can have a variety of designs, they are the opposite of a turbine which extracts energy from a flowing fluid or gas and this reduces its pressure in the process. Types of impellors found in pump systems might include; open, semi-open, closed, vortex and cutter impellors.
[edit] Related articles on Designing Buildings
- Air conditioning.
- Air handling unit.
- Building management systems.
- Building services
- Building services engineer.
- Chilled water fan coil system vs refrigerant based system
- Constant air volume CAV
- Evaluation of cooling effects: outdoor watermist fan
- Fan.
- Fan coil refurbishment for improved operational efficiency
- Fan coil unit
- Fan coils
- Fan convector
- Fan heater
- How do I know what capacity fan coil I need?
- How does a chilled water fan coil unit work?
- HVAC
- Intermittent extract fan
- Types of pump.
- Types of fan.
- Variable air volume VAV
- Ventilation
- What are the different types of fan coil units?
Featured articles and news
Spring Statement 2025 with reactions from industry
Confirming previously announced funding, and welfare changes amid adjusted growth forecast.
Scottish Government responds to Grenfell report
As fund for unsafe cladding assessments is launched.
CLC and BSR process map for HRB approvals
One of the initial outputs of their weekly BSR meetings.
Architects Academy at an insulation manufacturing facility
Programme of technical engagement for aspiring designers.
Building Safety Levy technical consultation response
Details of the planned levy now due in 2026.
Great British Energy install solar on school and NHS sites
200 schools and 200 NHS sites to get solar systems, as first project of the newly formed government initiative.
600 million for 60,000 more skilled construction workers
Announced by Treasury ahead of the Spring Statement.
The restoration of the novelist’s birthplace in Eastwood.
Life Critical Fire Safety External Wall System LCFS EWS
Breaking down what is meant by this now often used term.
PAC report on the Remediation of Dangerous Cladding
Recommendations on workforce, transparency, support, insurance, funding, fraud and mismanagement.
New towns, expanded settlements and housing delivery
Modular inquiry asks if new towns and expanded settlements are an effective means of delivering housing.
Building Engineering Business Survey Q1 2025
Survey shows growth remains flat as skill shortages and volatile pricing persist.
Construction contract awards remain buoyant
Infrastructure up but residential struggles.
Warm Homes Plan and existing energy bill support policies
Breaking down what existing policies are and what they do.
A dynamic brand built for impact stitched into BSRIA’s building fabric.