A simple effectiveness model for heat wheels. (May 2018)

• Record Type: Journal Article
• Authors: Seo, Jang-Won; Lee, Dae-Young; Kim, Dong-Seon
• Is Part Of: International journal of heat and mass transfer. Volume 120(2018)
• Page Start: 1358
• Page End: 1364
• Publication Date: 2018-05
• Subjects: Effectiveness -- Heat wheel -- Rotary -- Heat exchanger -- Analytical model; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2017.12.102
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: A simple analytical model is developed for heat wheels. Practical effectiveness correlations are proposed for heat wheels. Maximum error is ca. 5% for the investigated ranges. Abstract: Rotary heat exchangers or heat wheels are popularly used for heat recovery in many industrial and domestic applications. In this study, a simple effectiveness model is developed for general use in the field. Firstly, approximate solution is obtained for the governing equations of a periodic-flow heat exchanger by assuming similarity with a steady-state heat exchanger and then used to derive an effectiveness correlation. The correlation is compared with a widely accepted reference in the literature and found to give a maximum error of 5% in the investigated ranges. Simple empirical correlations are also provided for practical use in the field.