Performance comparison among two-phase, liquid, and vapor injection heat pumps with a scroll compressor using R410A
Although two-phase injection technique is expected to improve the performance and
reliability of heat pumps in cold climate conditions, its application is limited due to wet …
reliability of heat pumps in cold climate conditions, its application is limited due to wet …
Analysis of optimal intermediate temperature and injection pressure for refrigerant injection heat pump systems with economiser
Q Xu, J Wu, Z Guo, X Xue, X Li - Applied Thermal Engineering, 2022 - Elsevier
A heat pump cycle with refrigerant injection is one of the effective means for enhancing the
heating performance in low-temperature climates. The intermediate temperature and …
heating performance in low-temperature climates. The intermediate temperature and …
Refrigerant injection for heat pump systems in cold regions: advancements, challenges and future perspectives {fr} Injection de réfrigérant pour les systèmes de …
Z Zhang, H Cao, T **, Z Lv - International Journal of Refrigeration, 2023 - Elsevier
Refrigerant injection (RI) technique has been extensively used in heat pump systems to
reduce the exhaust temperature and raise the heating capacity. Recently, there have been …
reduce the exhaust temperature and raise the heating capacity. Recently, there have been …
Heating performance of a VRF heat pump system incorporating double vapor injection in scroll compressor
D Kang, JH Jeong, B Ryu - International Journal of Refrigeration, 2018 - Elsevier
Heat pumps with a vapor injection cycle are currently used to compensate for heating
capacity degradation at lower outdoor temperatures. A double vapor injection system with a …
capacity degradation at lower outdoor temperatures. A double vapor injection system with a …
Numerical study of the effects of injection-port design on the heating performance of an R134a heat pump with vapor injection used in electric vehicles
Heat pumps, which enable the cooling and heating of vehicular cabins, consume a
significant portion of the total energy consumption in electric vehicles (EVs). The efficiency of …
significant portion of the total energy consumption in electric vehicles (EVs). The efficiency of …
Method to control an air conditioner by directly measuring the relative humidity of indoor air to improve the comfort and energy efficiency
DK Lim, BH Ahn, JH Jeong - Applied energy, 2018 - Elsevier
In modern society, air conditioning systems are widely used in places where people tend to
congregate, such as in homes, companies, schools and work sites. Both the dry-bulb …
congregate, such as in homes, companies, schools and work sites. Both the dry-bulb …
Energy performance evaluation of two-phase injection heat pump employing low-GWP refrigerant R32 under various outdoor conditions
The refrigerant R32 has been receiving significant attention as an alternative to R410A used
in heat pumps, owing to its lower global warming potential. The two-phase injection (TPI) …
in heat pumps, owing to its lower global warming potential. The two-phase injection (TPI) …
A generalized continuous empirical correlation for the refrigerant mass flow rate through adiabatic straight and helically coiled capillary tubes
In spite of the simple geometry of capillary tubes, the refrigerant flow behavior through
capillary tubes is complex. Numerous empirical correlations have been developed to predict …
capillary tubes is complex. Numerous empirical correlations have been developed to predict …
Study on ammonia/water hybrid absorption/compression heat pump cycle to produce high temperature process water
CW Jung, JY Song, YT Kang - Energy, 2018 - Elsevier
The objectives of this paper are to analyze the heat transfer characteristics during the
ammonia water absorption process for the hybrid absorption/compression heat pump …
ammonia water absorption process for the hybrid absorption/compression heat pump …
Performance evaluation of a gas injection CO2 heat pump according to operating parameters in extreme heating and cooling conditions
HJ Chung, C Baek, H Kang, D Kim, Y Kim - Energy, 2018 - Elsevier
The objective of this study is to optimize the performance of a gas injection CO 2 heat pump
according to the operating parameters in extreme heating and cooling conditions. The …
according to the operating parameters in extreme heating and cooling conditions. The …