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Related Concept Videos

Pumped Concrete01:13

Pumped Concrete

Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...

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Related Experiment Video

Updated: Jul 2, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
10:22

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Efficient and inexpensive glass circulating pump.

M E Sime1, M L Caplin, D Phillips

  • 1Department of Chemistry, University of Southampton, Southampton SO9 5NH, Great Britain.

The Review of Scientific Instruments
|January 1, 1978
PubMed
Summary
This summary is machine-generated.

A new, cost-effective pump efficiently circulates gas mixtures in closed systems. This pump provides continuous, unidirectional gas flow suitable for low-pressure applications.

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Area of Science:

  • Mechanical Engineering
  • Vacuum Technology
  • Chemical Engineering

Background:

  • Circulating gaseous mixtures in closed systems requires specialized pumps.
  • Existing pumps may be inefficient, expensive, or unsuitable for low-pressure ranges.

Purpose of the Study:

  • To develop an efficient and inexpensive pump for gaseous mixture circulation.
  • To achieve continuous unidirectional gas flow in a closed system.

Main Methods:

  • Development of a novel pump design.
  • Testing the pump's performance in a closed system.
  • Measurement of gas flow rates and operating pressure range.

Main Results:

  • An efficient and inexpensive pump was successfully developed.
  • Continuous unidirectional gas flow was achieved at rates from 0 to 40 liters per minute.
  • The pump operated effectively within a pressure range of 10(-5) to 10(-3) Torr.

Conclusions:

  • The developed pump offers an efficient and economical solution for gas circulation in closed systems.
  • The pump's performance is suitable for applications requiring precise control of gas flow at low pressures.