"Substantial energy savings could accrue from use of nanofluids - depending on the application these savings can be taken as a cost reduction, weight saving, performance enhancement or reduced environmental impact"
dispersia ltd has distinctive skills in the formulation and performance testing of nanofluids. Nanofluids are dispersions of tiny sub-colloidal particles in fluids (that might be aqueous or organic) that exhibit enhanced heat transfer characteristics.These properties offer a range of new applications since heat can be transferred at a higher rate, leading to more efficient processes. Examples of the type of processes that can be improved include heating and cooling under flow and non-flow conditions. Application areas include:
The company has experience in the formulation, production, measurement and modelling of these systems including accurate characterisation of the fluids and measurement of heat transfer coefficients through to judicious choice of nanoparticulates and bespoke formulations suited to use in specific temperature ranges and heating/cooling needs. Figure 1 shows an example of a nanofluid systems devised with various nanoparticles and water, demonstrating the enhancement in effective heat transfer coefficient as the concentration of particles is increased. We have measured enhancements in thermal transfer coefficients of over 200% in some circumstances when in real-world application an enhancement of even 10% can be of significant benefit.
The precise fluid formulation is bespoke to the application. We assess and select formulations that suit application windows using our expertise and specific technologies based on a range of particulates (metal oxides, carbon nanotubes and related materials) and fluids (water, ethylene glycol, minerals oil).
Figure 1 Enhancement of forced convective heat transfer coefficient as a function of axial position from the inlet of the test section of a tubular geometry: carbon nanotube (CNT) and alumina nanofluids tested in a 1 m horizontal tube, whereas titanate and titania nanofluids measured with a 2 m long vertical tube
dispersia ltd has distinctive skills in the formulation and performance testing of nanofluids. Nanofluids are dispersions of tiny sub-colloidal particles in fluids (that might be aqueous or organic) that exhibit enhanced heat transfer characteristics.These properties offer a range of new applications since heat can be transferred at a higher rate, leading to more efficient processes. Examples of the type of processes that can be improved include heating and cooling under flow and non-flow conditions. Application areas include:
- industrial heating and cooling
- automotive
- computer chips and data centres
- medical treatments
- micro-reactors
- power generation
- high power lasers
The company has experience in the formulation, production, measurement and modelling of these systems including accurate characterisation of the fluids and measurement of heat transfer coefficients through to judicious choice of nanoparticulates and bespoke formulations suited to use in specific temperature ranges and heating/cooling needs. Figure 1 shows an example of a nanofluid systems devised with various nanoparticles and water, demonstrating the enhancement in effective heat transfer coefficient as the concentration of particles is increased. We have measured enhancements in thermal transfer coefficients of over 200% in some circumstances when in real-world application an enhancement of even 10% can be of significant benefit.
The precise fluid formulation is bespoke to the application. We assess and select formulations that suit application windows using our expertise and specific technologies based on a range of particulates (metal oxides, carbon nanotubes and related materials) and fluids (water, ethylene glycol, minerals oil).
Figure 1 Enhancement of forced convective heat transfer coefficient as a function of axial position from the inlet of the test section of a tubular geometry: carbon nanotube (CNT) and alumina nanofluids tested in a 1 m horizontal tube, whereas titanate and titania nanofluids measured with a 2 m long vertical tube