Real-time thermal load calculation by automatic estimation of convection coefficients

被引：3

作者：

Fayazbakhsh, M. A. ^{[1
]}

Bagheri, F. ^{[1
]}

Bahrami, M. ^{[1
]}

机构：

[1] Simon Fraser Univ, Sch Mechatron Syst Engn, Lab Alternat Energy Convers, Surrey, BC V3T 0A3, Canada

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2015年 / 57卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

HVAC-R; Thermal load calculation; Convection coefficient; Self-adjusting method; Heat balance method; HOURLY COOLING LOAD; COUPLED BUILDING ENERGY; PREDICTION; PERFORMANCE; SIMULATION; MODEL;

D O I：

10.1016/j.ijrefrig.2015.05.017

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A significant step in the design of Heating, Ventilating, Air Conditioning, and Refrigeration (HVAC-R) systems is to calculate the room thermal loads which often vary dynamically. A self-adjusting method is proposed for real-time calculation of heating/cooling loads in HVAC-R applications. In this method, the heat balance calculations are improved by real-time temperature data to achieve more accurate load estimations. An iterative mathematical algorithm is developed to adjust the heat transfer coefficients according to live measurements. Accepted analytical correlations are also used to estimate the heat transfer coefficients for comparison with the present model. The adjusted coefficients and the analytical correlations are separately used to estimate the thermal loads in an experimental setup. It is shown that the utilization of the adjusted coefficients yields to higher accuracy of thermal load estimations compared to the conventional analytical correlations. Since the proposed method requires less engineering information of the room, it can be adopted as a simplified yet accurate method for the design and retrofit of new and existing HVAC-R systems. (C) 2015 Elsevier Ltd and IIR. All rights reserved.

引用

页码：229 / 238

页数：10

共 37 条

[11]

Farrington R., 1999, P 16 EL VEH S

[12] An inverse method for calculation of thermal inertia and heat gain in air conditioning and refrigeration systems [J].