Isothermal compression adiabatic expansion engine

By combining isothermal compression and heat recovery technologies, the compressed gas is heated by high-temperature flue gas, which solves the problems of low efficiency and energy waste in compressed air generators, and achieves efficient energy utilization and sustainable development.

CN223839205UActive Publication Date: 2026-01-27BEIJING ZHONGRE ENERGY TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520733614.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-17
Publication Date
2026-01-27
Estimated Expiration
2035-04-17

AI Technical Summary

Technical Problem

Existing compressed air generators are inefficient, and the high-temperature flue gas emitted from factories is not effectively utilized, resulting in energy waste.

Method used

By combining isothermal compression technology with heat recovery technology, the compressed gas is heated by high-temperature flue gas through a heat recovery heat exchanger. Combined with a multi-stage isothermal compressor and cooler group, the temperature of the compression process is kept constant. Argon or air is used as the circulating working fluid, and a gas storage tank can be configured to form a closed loop to improve system efficiency.

Benefits of technology

It significantly improves the efficiency of compressed air generators, reduces energy waste, and achieves efficient energy utilization and sustainable development.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223839205U_ABST
    Figure CN223839205U_ABST
Patent Text Reader

Abstract

The utility model relates to an isothermal compression adiabatic expansion engine which comprises a compressor unit, a cooler unit, a heat recovery heat exchanger, an expansion machine, a motor, a power generator, a circulating working medium and a connecting pipeline. The heat recovery heat exchanger comprises a heat removal working medium channel and a circulating working medium channel; high-temperature flue gas exhausted by a factory is circulated in a heat removal working medium channel of the heat recovery heat exchanger; one end of a cycle working medium channel of the heat recovery heat exchanger is communicated with a working medium outlet of the compressor unit, and the other end is communicated with an inlet of the expansion machine; and a circulating working medium channel of a cooler of the cooler group is arranged on a compression working medium pipeline between every two stages of isothermal compressors of the compressor unit. An existing isothermal compression technology and an existing heat recovery technology are combined to form an innovative solution, waste heat in high-temperature flue gas is recovered and used for heating a working medium in a compressed gas system, and therefore the overall efficiency of the system is further improved.
Need to check novelty before this filing date? Find Prior Art