7 papers
Endoreversible Carnot machines with long-time reversible limit
Ramandeep S. Johal, Rajeshree Chakraborty
The well-known Curzon-Ahlborn (CA) engine [Am. J. Phys. {\bf 43}, 22 (1975)] runs in finite time and yields a finite power output. In order to recover the standard Carnot cycle fro…
Optimization of cooling power of a thermoelectric refrigerator: A unified approach
Rajeshree Chakraborty, Ramandeep S. Johal
We analyze the steady-state formalism for optimizing the cooling power of a thermoelectric refrigerator (TER), unifying the endoreversible and exoreversible approximations within o…
Virtual temperatures as a key quantifier for passive states in quantum thermodynamic processes
Sachin Sonkar, Ramandeep S. Johal
We analyze the role of virtual temperatures for passive quantum states through the lens of majorization theory. A mean temperature over the virtual temperatures of adjacent energy…
Ergotropic advantage in a measurement-fueled quantum heat engine
Sidhant Jakhar, Ramandeep S. Johal
This paper investigates a coupled two-qubits heat engine fueled by generalized measurements of the spin components and using a single heat reservoir as sink. Our model extends the…
Nonequilibrium steady states in bead-spring models: Entropy production and probability distributions
Jetin E Thomas, Ramandeep S. Johal
We study non-equilibrium models comprising of beads connected by springs. The system is coupled to two thermal baths kept at different temperatures. We derive the steady state prob…
Optimal performance of thermoelectric devices with small external irreversibility
Rajeshree Chakraborty, Ramandeep S. Johal
In the thermodynamic analysis of thermoelectric devices, typical irreversibilities are for the processes of finite-rate heat transfer, heat leak and Joule heating. Approximate anal…