DESIGN AND SIMULATION OF AIR CONDITIONING AND HOT WATER SYSTEMS OPERATED IN A HOSPITAL

• Main Author: Sokhim, KEO
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50179
• Institution: Institut Teknologi Bandung

Hospital system and hospital buildings are generally large, complex buildings which features a number of different functional area. Hospitals are often a big energy consumer because these types of buildings are operating 24 hours a day, seven days a week throughout the year and consumes energy in various form to ensure the indoor air quality and comfortable condition for patients. This study aims to design and simulate air conditioning and hot water system in a hospital building, to compare annual energy consumption between three alternative systems: air conditioning and hot water system with heat pumps (1st alternative system), air conditioning and hot water system with solar collectors (2nd alternative system), and air conditioning and hot water system with the combination of heat pumps and solar collectors (3rd alternative system). In this study, we used ASHRAE/ASHE Standard 170-2008 for health care facilities air ventilation, Institute plumbing code for estimating daily hot water demand in the building, Standar Nasional Indonesia for determining U-value of building envelop, DKI green building regulation is used to compare with alternative systems annual energy consumption, Hourly Analysis Program (HAP) is used to perform the cooling load estimation, and ASHRAE duct fitting database and McQuay duct sizer programs are also used to design and size the ductwork. In terms of annual energy consumption, we found that, the first alternative system consumed electricity 179 kWh/m2 per year, the second alternative system consumed electricity 173 kWh/m2 per year, and the third alternative system consumed electricity 176 kWh/m2 per year. Having compared annual energy consumption of all alternative systems to DKI green building regulation, we conclude that all alternative systems are said to be energy efficient system because it does not exceed the recommended total annual energy consumption of DKI, which stated that IKE for hospital building is 400 kWh/m2 per year. With these results, the third alternative system is selected to be installed in this hospital building because it can provide daily hot water to the building compared to the second alternative system, the available space installation of solar collectors, building orientation, the potential of solar irradiation, especially it consumed less energy than the first alternative system.