A regenerative elastocaloric device: experimental results

Elastocaloric effect in Cu - Zn

This work aims to study the elastocaloric effect in a Cu-Al-Zn shape memory alloy sample. The elastocaloric effect refers to the reversible thermal response (isothermal entropy change, or adiabatic temperature change) of a body when subjected to a uniaxial stress. To measure the entropy change of the martensitic transformation, differential scanning calorimetry technique has been used. The calo...

Elastocaloric cooling potential of NiTi

24 Solid state elastocaloric cooling, the endothermic reversible martensitic phase transformation in shape 25 memory alloys, has the potential to replace vapor compression refrigeration. NiTi, Ni2FeGa, and CoNiAl 26 shape memory alloys were experimentally investigated to measure the magnitude of temperature 27 change using thermography during uniaxial tensile experiments. Consecutive tensile cy...

Trajectory Optimization of Robots with Regenerative Drive Systems: Numerical and Experimental Results

We investigate energy-optimal control of robots with ultracapacitor based regenerative drive systems. Based on a previously introduced framework, a fairly generic model is considered for the robot and the drive system. An optimal control problem is formulated to find point-to point trajectories maximizing the amount of energy regenerated and stored in the capacitor. The optimization problem, it...

The Double-Effect Regenerative Absorption Heat Pump: Cycle Description and Experimental Test Results

Experimental Assessment of a Fixed On-Shore Oscillating Water Column Device: Case Study on Oman Sea

Ocean wave is one of the renewable energy resources that these days various devices are used to extract its energy. Oscillating Water Column (OWC) installed on the shore is one of the wave energy absorption systems which has received attention due to its simple structure. Investigation of the pneumatic power is of great importance in such systems as the conversion of wave energy to pneumatic en...