Among all available solar technologies, solar-assisted heat pump (SAHP) is the most
popular technology for low-and medium-temperature applications, ie, drying, space heating …

The depletion of fossil fuels and the impacts of climate deterioration present significant
challenges to achieving sustainable development goals. Developed nations worldwide are …

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 …

Previous studies have pointed out problems with the dual-temperature air source heat
pump. Thus, this paper proposes a novel dual-temperature air source heat pump cycle with …

Conventional air source heat pumps suffer from frosting in winter and consume a large
amount of electricity for defrosting. Meanwhile, ventilation heat recovery is an important …

This paper proposes a novel dual-temperature air source heat pump cycle with an ejector
and a flash tank for simultaneous application in the water heater (providing about 55° C hot …

Air source heat pumps (ASHPs) have emerged as up-and-coming alternatives to fossil fuel
heating systems due to their energy efficiency, environmental friendliness, and installation …

Multi-functional heat pump system with the functions of air conditioning and producing
domestic water can operate throughout the year, so its working condition is more …

This paper presents a modified sub-cooler vapor-injection (MSV) cycle with an ejector for air
source heat pump applications. The added ejector is used to realize two condensation …

In this paper, an experimental investigation of the performance improvement of a heat pump
equipped with a two-phase ejector, called an “ejector–expansion heat pump (EEHP)”, is …