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Obtaining the heat loss coefficient of a dwelling using its heating system(integrated coheating)

建筑节能(中英文) 2016年第4期 96-96页

作者： David Farmer David Johnston Dominic Miles-Shenton 侯恩哲

This paper presents the methodology,along with some of the initial findings and observations from tests performed on two dwellings,of differing construction and form,in which a coheating test was performed using the dwelling’s central heating system;this method is referred to as integrated *** obtained during the integrated coheating tests using a dwelling’s heating system have been compared with data obtained during electric coheating of the same *** one instance,integrated coheating test data from one dwelling was compared to a similar adjoining control dwelling that was simultaneously subject to an electric coheating *** results show a good agreement between the heat loss coefficients(HLC)obtained using a dwelling’s own heating system and those obtained through electrical *** analysis suggests the HLC estimate obtained from integrated coheating is likely to be more representative of how a dwelling performs *** findings question the appropriateness of comparing current steady-state HLC predictions to those derived from in-use monitoring *** coheating has the potential to provide a more cost-effective and informative indication of whole house heat loss than electric coheating,as it enables in situ quantification of both fabric and heating system performance.

关键词： Coheating heat loss coefficient Thermal performance Energy signature heating system Performance gap heat meter Energy efficiency Building fabric Whole house heat loss

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Thermal loss Analysis of a Flat Plate Solar Collector Using Numerical Simulation

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Computers, Materials & Continua 2022年第12期73卷 4627-4640页

作者： Timur Merembayev Yedilkhan Amirgaliyev Murat Kunelbayev Didar Yedilkhan Institute of Information and Computational Technologies CS MES RK AlmatyKazakhstan International Information Technology University AlmatyKazakhstan Al-Farabi Kazakh National University AlmatyKazakhstan Astana IT University Nur-SultanKazakhstan

In this paper,we studied theoretically and numerically heated losses of a flat solar collector to model the solar water heating system for the Kazakhstan climate *** different climatic zones with a growing cost for energy or lack of central heating systems,promising is to find ways to improve the energy efficiency of the solar *** mathematical model(based on ordinary differential equation)simulated the solar system work process under different *** bridge the modeling and real values results,we studied the important physical parameters such as loss coefficient,Nu,Ra,and Pr *** impacted the efficiency of flat solar collectors and heat losses of the *** developed mathematical models,the design and composition of the software and hardware complex,and automated control and monitoring systems allow solar hot water heating systems to increase the energy efficiency of life support systems and heat supply of buildings by reducing energy consumption for heat *** simulation result showed that during the daytime,the temperature of water in the collector is 70°C;the storage of heated water since heated water is cooled at *** defined that a work period of the system can be extended with high efficiency(April-October)for Almaty region.

关键词： Solar heating system heat loss coefficient dynamic simulation flat plate collector

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