STUDY OF PART LOAD AND HEAT RECOVERY FOR AIR CONDITIONING AND DOMESTIC HOT WATER SYSTEM IN HOTEL

• Main Author: Anugrahadi Wiraputra, Yudistira
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/70185
• Institution: Institut Teknologi Bandung

Improving energy efficiency is an important issue for many countries. In Indonesia, there is massive potential for energy saving. One such example is commercial building energy consumption. For hotels, there’s as much as 10%–30% of potential energy saving, so it becomes important to see further. This study focuses on the design and simulation of air conditioning and hot water systems operated in a hotel building in the Special Capital Region of Jakarta, Indonesia. This hotel needs to operate the cooling and hot water systems 24 hours per day and 7 days per week. And thus very energy intensive. To do this, the Hourly Analysis Program (HAP) is used to calculate the cooling load. Hot water demand is estimated based on ASHRAE standard 2011, service water heating. After knowing the demand, 3 systems are proposed, 1 as a benchmark and 2 others to study the effect of part load performance and to see the effect of a heat recovery system. A study is conducted to find the best option concerning energy consumption and lifecycle cost. the benchmark systems are high capacity water-cooled chiller and hot water system with a heat pump (design 1), for the studied system are low capacity chiller and hot water system with heat pump, (design 2), and a water-cooled chiller with a built-in heat recovery system (design 3) According to energy analysis, design 1 has the lowest energy consumption rate of 2.562 MWh. energy consumption of designs 2 and 3 are higher by 5.7% and 0.5% respectively. For lifecycle cost, design 1 also has the lowest lifecycle cost, with 44.916 Bil. IDR. Designs 2 and 3 have higher costs with 6.4% and 0.56% respectively