Implementing the Integrated Design Process (IDP) to design, construct and monitor an eco-house in hot climate
Ali Alajmi
Abstract
Eco-houses play a pivotal role in reducing greenhouse gas emissions. To implement such a concept, the current Conventional Design Process (CDP) needs to be improved. Thus, Integrated Design Process (IDP) was recently introduced to the buildings sector. IDP involves early stakeholders in a systematic approach to achieve performance targets. In this study, IDP was implemented in a single-family house, targeting efficient houses with minimum/no cost. Many energy efficiency strategies (EESs), such as envelop insulation, orientation, window properties, and efficient air-conditioning system, have been applied. These energy strategies predicted a substantial energy reduction where the energy use intensity (EUI) would fall from 182 to 72 kWh/m2.year. In addition, solar renewable energy, domestic solar hot water (DSHW), and photovoltaic (PV) panels (10 kW) saved 18.78 MWh/year. Besides, water efficiency strategies (WESs) are anticipated to save 217,581 gallons/year due to the use of a water recycling unit, low flowrate faucets, and efficient shower systems, all of which have been proposed. All the recommended energy efficiency strategies (EESs) and water efficiency strategies (WESs) had a simple payback period of fewer than 10 years and proved their cost feasibility over their life-cycle. Moreover, a considerable CO₂ emission avoidance (117 tons/year) was attained.