ZEMCH 2015 - International Conference Proceedings | Page 105

Table 2: Capital Expenditure of MUCB and MUGB Description MUCB (M0) cost MUGB (M1) cost New Building and structures 3 x 3 m 5.922,00RM 5.625,90RM Walls 1.700,00RM 1.938,00RM Finishes 1.656,00RM 1.573,20RM Door and Windows 1.390,00RM 3.981,06RM Roof and Roof Covering works 3.696,00RM 3.416,20RM Painting Works 1.020,00RM 969,00RM Electrical 3.425,00RM 3.253,75RM Solar (DC-run light generation) Total 760,00RM 18.809,00RM 21.517,11RM A different approach has been used to estimate the operating costs (OPEX), as at the time of the research both buildings were not connected to electrical supply yet. Due to the lack of past data about the real operating expenditure of the two case studies, the researchers simulated the buildings’ performances through a comprehensive building simulation tool. The software used is is a widely used whole-building performance simulation tool known as eQUEST. The software needs the development of an underlying model. Hence, the following design parameters have been inserted: The buildings’ location and orientation, dimension, envelope insulation, finishing, building operation schedule and interior end-uses are the parameters. Both buildings have been considered a residential single-family area type with an operation schedule of 24-hours per day over the entire year. The yearly operating costs of both MUCB (M0) and MUGB (M1) resulting from the output of the simulation are shown in Table 3. The highest position within the electricity consumption are the cooling costs derived from the different active cooling demand of both buildings. Due to the fact that M1 is about 2.4 degree C cooler than M0, it will also consume less energy to cool the house down to an acceptable maximum tropical thermal comfort level of 28.6 degree C during the day respectively the heat peak hours (Wagner 2013): Table 3: Yearly Operating Expenditure of MUCB (M0) and MUGB (M1) MUCB MUGB Water consumption (RM/Year) 42,07 42,07 Electricity consumption (RM/Year) 233,33 146,53 Total (RM/Year) 275,39 188,59 4. Analysis In order to develop a comprehensive financial model for the two investigated compared buildings, the analysis proceeds in three phases. The first step is to set up the financial model by doing some basic assumptions related to the Malaysian financial market. Afterwards, the future cash flows are projected: operational, investment and financing cash flows are evaluated on a yearly basis throughout the whole buildings’ life cycle. Finally, a multivariate analysis is conducted to create different scenarios and evaluate the building’s financial measures by changing some independent variables. Financial Analysis of Green Mock-Up Buildings in Tropical emerging Countries 103