The effect of geometric parameters on the efficiency of an axial recuperator
Annotation
This article addresses the enhancement of energy efficiency in building ventilation systems through the application of heat recovery units. A comparative analysis of the most commonly used types of such units – plate recuperators and rotary regenerators – was conducted. The key drawbacks of these units were identified: significant overall dimensions of plate-type recuperators in their installed configuration and the risk of air stream mixing in rotary regenerators, which limits their application in spaces with stringent hygiene requirements. A design for an axial recuperator is proposed, configured as a block of coaxial thin-walled cylinders with a staggered arrangement of baffles. This technical solution ensures complete separation of the supply and exhaust air streams and a compact design. A mathematical model of heat transfer is presented, incorporating the assumptions made. A numerical study was conducted on two geometric configurations of the axial recuperator. The results of the preliminary calculation indicated the advantages of the configuration featuring a uniform cross-sectional area of the flow channels. Future research directions are outlined: improving the accuracy of the mathematical model by reducing the number of assumptions and validating the numerical results using the finite element method.
Keywords
Постоянный URL
Articles in current issue
- Indoor air parameters (CO₂, temperature, and humidity) as indicators of room occupancy
- Optimization of air flow distribution in short diffuser adsorption filters: a combined approach based on a perforated plate and a profiled adsorbent layer
- Working processes of low-speed machines in subcritical conditions with carbon dioxide
- Energy efficiency of combined transcritical absorption cooling cycles
- Potential of lipids from secondary fish raw materials in industrial biotechnology
- Obtaining a high-protein flavoring ingredient from the secondary raw materials of squid processing
- Storage capacity of sweet biscuits with the addition of duckweed and hemp seed kernels
- Using a magnetic field in low-temperature storage of fruits and vegetables
- Possibility of using non-traditional plant raw materials in the technology of flour-based oriental sweets
- Prediction of the molecular diffusion process of carbon dioxide in aqueous solutions of sugar beet molasses in an extended range of temperatures and dry matter concentrations