We investigate the properties of a harmonic chain in contact with thermal bath at one end and subjected, its other end, to periodic force. The particles also undergo random velocity reversal action, which results finite heat conductivity system. prove approach system time state compute current, equal averaged work done on system, that state. This approaches positive value as length increases. R...

In this paper, we propose a method of improving the efficiency of thermoelectric generators (TEGs) by using a lens to concentrate heat on the heat source of a TEG. Initial experiments performed using discrete components show about 60mV increase in the amount of voltage generated when using a magnifying lens. Simulation results on the proposed TEG configuration exhibit up to 16% efficiency when ...

This note considers the problem of estimating unknown time-varying strength of the temporal-dependent heat source, from measurements of the temperature inside the square domain, when the prior knowledge of the source functions is not available. This problem is an inverse heat conduction problem. In this process, the direct problem will be solved by using the heat fundamental solution. Then a se...

• A class of identifiable frequency response function models is developed for linear parameter-varying systems. closed-form Jacobian the weighted nonlinear least-squares estimator derived. An experimental LPV FRF model a flexible beam system estimated. The estimate shows high simulation performance on validation data sets. For Linear Time-Invariant (LTI) systems, Frequency Response Functions (F...

In this paper, the non-Fourier heat conduction in a semi-infinite body was examined. The heat wave non-Fourier heat conduction model was used for thermal analysis. Thermal conductivity was assumed temperature-dependent which resulted in a non-linear equation. The heat source was also considered temperature-dependent which resulted in a non-homogeneous equation. The Mac-Cormack predictor-correct...

Eggs of intermittently incubating birds are periodically rewarmed by a transient pulse of heat from the parent's brood patch. Estimating the energy cost of rewarming such an egg requires knowledge of the egg's thermal capacity, typically assumed to be the product of the egg's mass and its specific heat, designated here as the gravimetric thermal capacity. When chicken eggs are transiently warme...

The polyphase framework is a well-established tool in discrete-time signal processing. It can be used to simplify considerably the description of periodically time varying systems. From network theory it is known that there are structurally and functionally related networks to a given network that can be obtained e.g. by transposition or by taking the adjoint. In terms of functionality the tran...