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
A must-attend event for the architecture industry.
Caroline Gumble to step down as CIOB CEO in 2025
After transformative tenure take on a leadership role within the engineering sector.
RIDDOR and the provisional statistics for 2023 / 2024
Work related deaths; over 50 percent from constructuon and 50 percent recorded as fall from height.
Solar PV company fined for health and safety failure
Work at height not properly planned and failure to take suitable steps to prevent a fall.
The term value when assessing the viability of developments
Consultation on the compulsory purchase process, compensation reforms and potential removal of hope value.
Trees are part of the history of how places have developed.
The increasing costs of repair and remediation
Highlighted by regulator of social housing, as acceleration plan continues.
Free topic guide on mould in buildings
The new TG 26/2024 published by BSRIA.
Greater control for LAs over private rental selective licensing
A brief explanation of changes with the NRLA response.
Practice costs for architectural technologists
Salary standards and working out what you’re worth.
The Health and Safety Executive at 50
And over 200 years of Operational Safety and Health.
Thermal imaging surveys a brief intro
Thermal Imaging of Buildings; a pocket guide BG 72/2017.
Internally insulating a historical building
An experimental DIY approach using mineral thermal lime plaster.
Tree species selection for green infrastructure: A guide for specifiers.
The future of the Grenfell Tower site
Principles, promises, recommendations and a decision expected in February 2025.