thermal efficiency


Also found in: Dictionary, Acronyms, Wikipedia.

thermal efficiency

[′thər·məl i′fish·ən·sē]
(chemical engineering)
In a tube-and-shell heat-exchange system, the ratio of the actual temperature range of the tube-side fluid (inlet versus outlet temperature) to the maximum possible temperature range.
(thermodynamics)

thermal efficiency

The ratio of the energy produced in the engine to the heat energy released by the fuel in a unit of time.
References in periodicals archive ?
Air pre-heater (APH) is one of the most effective methods for increasing thermal efficiency and reducing NOx emission of diesel engines.
To analysis the thermal performances of the heat pipe the thermal efficiency and the thermal resistances between the evaporator and the condenser regions are measured.
The maximum thermal efficiency of present-day gasoline engines for automobiles is on the order of 30%, believed to fall to a level as low as 15% in states from idling to low-speed city driving.
Again, even without any condensing, the condensing gas water heater efficiency is significantly better than conventional natural draft, center flue gas water heaters, because the thermal efficiency is incrementally higher and standby losses are drastically reduced.
This means that the engine thermal efficiency is now in the region of 70% or more.
Benefiting from these design features, H|rmann''s aluminium door ranges offer even wider contemporary styling options Thermal efficiency is taken to higher levels with the TopPrestigePlus model featuring 70mm thick insulation inside the aluminium construction.
It was installed at Neuchatel, Switzerland and had an output of 4MW, a thermal efficiency, n, of 18%, a firing temperature (turbine inlet temperature) of 998[degrees]F (357[degrees]C) and a relatively low exhaust temperature of about 530[degrees]F (277[degrees]C).
In Berlin, a $65,000 thermal efficiency grant will help the town implement thermal efficiency measures in Berlin Memorial Hall and the Municipal Public Safety Building, including improvements to the building envelope and the HVAC system.
He said experimental data showed that combustion, thermal efficiency of existing geysers could be increased up to 40% without any significant increase in the manufacturing cost and 26% saving of natural gas per geyser by the modification, which is the utmost requirement in view of prevailing social economic conditions.
The range incorporates advanced burner technology and an aluminium MacroChannel heat exchanger to increase thermal efficiency.
The low k values of Kaolite 2000-LI along with high cold crushing strengths at 450 psi at densities of 38 to 41 pcf translate into superior insulating castable that design engineers can use to substantially strengthen the refractory lining and at the same time provide the thermal efficiency to lower energy costs.

Full browser ?