What question did this study set out to answer?

This research aims to explore how vapor injection techniques affect the performance of scroll compressors in heat pumps, particularly at low temperatures.

February 6, 2026Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering

Simulation and experimental investigation on performance of heat pump scroll compressor with two-phase vapor injection

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Authors

WWWeitao Wang ZZZhaorui Zhao JHJiayi He

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Overview

Simulation and experimental investigation reveals vapor injection improves compressor capacity in heat pump systems, suggesting enhanced energy efficiency.

Key Points

This research aims to explore how vapor injection techniques affect the performance of scroll compressors in heat pumps, particularly at low temperatures.
Developed a thermodynamic model to assess vapor injection effects on compressor performance.
Constructed an experimental platform for testing vapor injection scroll compressors.
Regulated vapor injection states using electric heaters and studied various refrigerant conditions.
Compared simulation results with experimental data to validate findings.
During superheated vapor injection, an increase in injection temperature slightly decreased mass flow rates but improved coefficient of performance (COP).
During two-phase injection, the mass flow rate increased by 55.87% as injection quality rose from 60% to 90%, with a heating capacity increase of 3.72%.
Simulation errors for both vapor injection types remained within 10%.
Vapor injection point placement affects performance: near suction increases mass flow and heating capacity, while near discharge reduces COP.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/698585678f7c464f23008b02 https://doi.org/10.1177/09544089251414173

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February 6, 2026Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering

Simulation and experimental investigation on performance of heat pump scroll compressor with two-phase vapor injection

View Full Paper

Ask AI

Bookmark

Authors

WWWeitao Wang ZZZhaorui Zhao JHJiayi He

Discussion

Member takes

Overview

Simulation and experimental investigation reveals vapor injection improves compressor capacity in heat pump systems, suggesting enhanced energy efficiency.

Key Points

This research aims to explore how vapor injection techniques affect the performance of scroll compressors in heat pumps, particularly at low temperatures.
Developed a thermodynamic model to assess vapor injection effects on compressor performance.
Constructed an experimental platform for testing vapor injection scroll compressors.
Regulated vapor injection states using electric heaters and studied various refrigerant conditions.
Compared simulation results with experimental data to validate findings.
During superheated vapor injection, an increase in injection temperature slightly decreased mass flow rates but improved coefficient of performance (COP).
During two-phase injection, the mass flow rate increased by 55.87% as injection quality rose from 60% to 90%, with a heating capacity increase of 3.72%.
Simulation errors for both vapor injection types remained within 10%.
Vapor injection point placement affects performance: near suction increases mass flow and heating capacity, while near discharge reduces COP.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/698585678f7c464f23008b02 https://doi.org/10.1177/09544089251414173

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