Energy Efficient Design and Performance of Air Conditioning Buildings in Developing Countries

Abstract

Energy Performance of Buildings should include a general framework for the calculation of energy performance and building categories together with thermal characteristics of building, air conditioning, ventilation, lighting and appliances aspects considered. The present paper addresses these aspects in relation to conventional and renewable energy sources .These include Active solar systems contribution to domestic water heating based on renewable energy sources, CPH production, District cooling systems The air distribution in spaces is an important factor in optimizing the energy recourses by effectively utilizing the energy form available from source (chilled water and or hot water); it is a great challenge to design an optimum air conditioning system that provides comfort and air quality in the air-conditioned spaces with efficient energy consumption. This paper reviews the energy sources available in Egypt, their distribution and utilization in commercial sectors .Evaluation of the recent progresses of HVAC airside design for the air-conditioned spaces follows then. The present evaluation study defines the current status, future requirements, and expectations. The paper demonstrates the importance of incorporating an energy performance directive as a Standard in our region such a goal will aid energy savings in large buildings and set regulations to energy efficient designs that are based on Standard calculation methods. The proposed Standard would be largely based on International Standards and appropriately modified to suit local practices .The target is to develop standardised tools for the calculation of the energy performance of buildings, with defined system boundaries for the different building categories and different cooling/heating systems. Endeavour to prepare models for expressing requirements on indoor air quality, thermal comfort in winter and when appropriate in summer, visual comfort, etc is targeted with a common procedure for an “energy performance certificate”. Ultimately it is needed to design, construct and operate a solar Building that can meet the rural and desert requirements and save the diminishing fossil fuel sources. The present work is to provide transparent information regarding output data (reference values, benchmarks, etc.) and to define comparable energy related key values (kWh/m2, kWh per person, kWh per apartment, kWh per produced unit etc.) .Proposals to develop a common procedure for an “energy performance certificate” and CO2 emissions are given.