Preparing Heating Atlas of Iran Entire Zones By Degree- Day Method to Prepare Energy Consumption Scale

Subject Areas : Water and Environment

mehdi  Mehrabi ¹ (Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran. (Corresponding author))
abdolrazagh  Kaabi-Nejadian ² (Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran- Renewable Energy Organization of Iran, Ministry of Energy, Tehran, Iran)
morteza  Khalaji Asadi ³ (Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran)

Received: 2010-06-02 Accepted : 2011-03-17 Published : 2011-09-23

Keywords: Iran heating HDDs atlas, Energy management,

Abstract :

Considering fossil fuels depletion and increasing of energy demand in Iran, a special attention is requiredtoward the energy conservation. Energy demand of building section in Iran is very high, which is as a resultof many factors such as governmental huge subsidies for energy, lack of energy conservation culture inbuilding inhabitants, poor insulation of buildings and poor heating or cooling control systems.Most of buildings heating control systems in Iran do not respond properly to weather temperature changes during winters, therefore most of the time the interior temperature of these buildings exceed the comfort temperature, thus these buildings are not energy efficient and consume excessive amount of energy. The most important index to identify these buildings across the country is to know HDDs for each point of the country.Unfortunately, up to now no comprehensive research has been conducted in Iran about HDDs, and thus no HDDs atlas has been provided, therefore it is essential for energy managers, engineers and in particular for the government to be supplied with HDDs for each point of Iran. By taking this fact into account, we decided to prepare a comprehensive HDDs atlas for Iran entire zones.In this paper authorized temperature databases of 255 meteorological stations in 30 provinces of Iran havebeen collected from Iran meteorological organization, thereafter, by processing the temperature databases, theannually HDDs for each station were calculated, then a mathematical modeling (multiple regression analysis technique) was employed in order to simulate the HDDs of other places in Iran. Consequently, a HDDs Atlas across Iran entire zones was provided.As a result of this work, by providing a HDDs atlas, the government would be capable of pointing out buildings that consider energy conservation standard scales with proper heating control systems and continue to support them with subsidies, if not they can warn them to reform their energy consumption methods, this policy enhances the government abilities to manage the rate of energy consumption in buildings. Furthermore, energy managers and engineers will be provided with a standard index to calculate annual energy requirement of each building by considering energy conservation aims.

References:

[1]      American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE, Energy estimating and modeling methods, Ch. 31 in ASHRAE Handbook 2001: Fundamentals.

[2]      Verein Deutscher Ingenieure ,VDI, Economic efficiency of building installations, VDI 2067.

[3]      The chartered institution of building Services Engineers, London, TM41-2006, Energy theory and applications,

[4]   Ghassem Heidarinejad, Mohammad Heidarinejad, Shahram Delfani, Outdoor design conditions data for the cities of Iran, 6th International Energy Conversion Engineering Conference (IECEC) 28 - 30 July 2008, Cleveland, Ohio, American Institute of Aeronautics and Astronautics.