As a highly efficient thermodynamic cycle formed by pure natural fluid and using
aerothermal energy, transcritical CO 2 technology has huge advantages in terms of energy …

In this paper, the environment friendly refrigerant options suitable for automobile air
conditioners are reviewed. Initially, the thermophysical, thermodynamic and chemical …

Energy consumption and environmental concerns are the two main drivers optimize heat
pump systems. However, under extreme weather conditions especially in heating mode …

Heat pump is an efficient method to substitute traditional boilers for cleaner space heating. A
new configuration of CO 2 heat pump system integrated with vapor injection and dedicated …

Efficient and wide-range heat pump system is essential to improve the driving range and
comfort of electric vehicles. In this paper, a vapor-injection transcritical CO 2 heat pump …

Energy, exergy, economic and environmental analysis of a novel direct-expansion solar-
assisted flash tank vapor injection heat pump for water heater is conducted by simulation …

Using the vapor injection scroll compressor in heat pump systems for electric vehicles is one
of the promising solutions for promoting the driving range in extremely cold climates. In this …

This paper presents a model predictive control (MPC) approach to optimize the operation of
a transcritical CO 2 air source heat pump (ASHP) water heater. Past findings have revealed …

This study proposed an improved CO 2 heat pump system for electric vehicles by
introducing the concept of two stage compression with intermediate cooling. A coefficient of …

The pinch point in the gas cooler significantly impacts the optimal discharge pressure and
system performance of the CO 2 heat pump water heater, however the pinch point …