Regenerative cooling system

A regenerative cooling system for a regenerative heat engine, the regenerative heat engine including a working gas, a gas expander, at least one regenerative heat exchanger, a heat source, and a hot gas intake duct connecting said heat source to said gas expander, the regenerative heat engine being configured such that the working gas circulates to be preheated in a high-pressure regeneration duct of the regenerative heat engine to be preheated after being compressed by a compressor, the working gas being superheated at an outlet of said high-pressure regeneration duct by the heat source, subsequently introduced into the gas expander such that the working gas is expanded to perform work on a power takeoff shaft, and subsequently expelled at an outlet of the gas expander and introduced into a low-pressure regeneration duct of the regenerative heat exchanger, the working gas circulating in said low-pressure regeneration duct such that the working gas surrenders a portion of residual heat from the working gas circulating in the low-pressure regeneration duct to the working gas circulating in the high-pressure regeneration duct, said regenerative cooling system comprising:

• at least one cooling chamber at least partly surrounding the gas expander and the hot gas intake duct connecting said heat source to said gas expander, the at least one cooling chamber leaving open a gas circulation space between said cooling chamber, and said gas expander and said hot gas intake duct;
• at least one chamber inlet port connected to the outlet of the gas expander and configured such that a portion of the working gas expelled from said gas expander via said outlet of the gas expander enters into the gas circulation space;
• and
• at least one chamber outlet port connected to the low-pressure regeneration duct and configured such that the portion of the working gas leaves the gas circulation space and is subsequently introduced into said low-pressure regeneration duct.