This study aims to explore the application effectiveness of a novel shell-and-tube superheater in a CO2 hydrate cold storage system. Through experimental and simulation analysis

the study investigates the impact of the new type of pipe superheater on CO2 hydrate formation and cold storage characteristics under different filling pressures. Initially

the experimental section compares the performance of the new and old superheater and identifies the optimal operating conditions in a pure water system. Subsequently

a system simulation model is constructed using MATLAB software to optimize four structural parameters of the superheater

i.e. pipe material

wall thickness

groove spacing

and groove depth. The results demonstrate that under the optimal condition of 4.0 MPa

the novel superheater significantly enhances system performance. Specifically

the average cold storage rate reaches 6.23 kW

the latent heat storage is 1 841.06 kJ

the sensible heat storage is 2 301.33 kJ

the total heat storage is 4 142.39 kJ

the CO2 hydrate formation mass is 6.23 kg

and the system COP (coefficient of performance) is 2.76. Simulation optimization reveals that the superheater's heat transfer efficiency is maximized by reducing wall thickness and groove spacing

while increasing groove depth. This study provides a theoretical basis for the optimal design of CO2 hydrate cold storage systems

and it is of significant importance in advancing CO2 capture and utilization technologies.