An investigation of air and water dual adjustment decoupling control of surface heat exchanger

Fang, Z, Xu, X, Li, Q, You, X and Oladokun, MO ORCID: https://orcid.org/0000-0001-5320-5219 2018, 'An investigation of air and water dual adjustment decoupling control of surface heat exchanger' , Applied Thermal Engineering, 133 , pp. 418-427.

[img]
Preview
PDF - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.

Download (1MB) | Preview

Abstract

The terminal equipment of central cooling system accounts for a significant proportion of the total system's energy consumption. Therefore, it is important to reduce the terminal equipment energy consumption in central air conditioning system. In this study, the difference of the effect of the chilled water flow rate and air supply rate on the surface cooler during the heat transfer process is taken into full account. Matlab/Simulink simulation software is used to model and simulate the heat transfer of surface cooler of the main terminal equipment of air conditioning system. Simulation tests and experimental validations are conducted by using variable chilled water flow rate and variable air supply rate control mode separately. The experiment results show that the simulation model can effectively predict the heat transfer performance of heat exchanger. Further, the study introduced a dual feedback control mode, which synchronously regulates the chilled water flow rate and air supply rate. Also, under certain conditions, the complex heat transfer process of the surface cooler can be decoupled, and single variable control pattern is used to separately regulate the chilled water flow rate and air supply rate. This can effectively shorten the system regulation time, reduce overshoot and improve control performance.

Item Type: Article
Schools: Schools > School of the Built Environment
Journal or Publication Title: Applied Thermal Engineering
Publisher: Elsevier
ISSN: 1359-4311
Related URLs:
Funders: National Key Research and Development Program of China
Depositing User: MO Oladokun
Date Deposited: 30 Jan 2020 13:44
Last Modified: 30 Jan 2020 15:15
URI: http://usir.salford.ac.uk/id/eprint/53106

Actions (login required)

Edit record (repository staff only) Edit record (repository staff only)

Downloads

Downloads per month over past year