M.Sc. Tezi Görüntüleme

Student:	Birkut GÜLER
Supervisor:	Prof.Dr. Mehmet Emin ARICI
Department:	Makine Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University Turkey

Title of the Thesis:	Theoretical Analysis Of Cold Buildings The Heating Up Process
Level:	M.Sc.
Acceptance Date:	14/1/2014
Number of Pages:	52
Registration Number:	i2733

Summary:

Heating of living spaces is the subject of interest for mechanical engineers. Heating comfort demands and importance of energy efficiency concept in engineering have increased the expectations for a qualified design. For the current application of heating project, temperatures of the system components are taken as constant and the related calculations are based on these constant values. Supplementary tables, graphics and similar materials are documented according to the constant values. Therefore, heating process is assumed as a steady-state problem.

However, because of time varying nature of outer temperature and inevitable occurrence of process interruptions, the heating process is a transient problem. During the heating process, heat transfer takes place simultaneously among the system components themselves (heating system itself, air of living environment and structure material) and between the internal and outer air. In the presented study, conservation of energy for each of the system component is represented by ordinary differential equations and these equations are solved simultaneously by fourth order Runge-Kutta method.

Numerical results show that the effective parameters for the system are the time constant of structure material, the building envelope resistance and the amplitude of outer air temperature.

Key Words: Heating of buildings, time constant, heating up period, transient heating