Influence of domestic hot water parameters on the energy consumption of large buildings in Senegal

This paper investigates the effects of domestic hot water (DHW) parameters on the energy consumption of large buildings in Senegal. Three types of reference buildings have been selected and developed (residence, office and hotel), and for each of them, the standard values of the three studied parameters (distribution temperature, flow rate and heat tank losses) are defined. The DOE-2.1E building energy program has been employed for computer simulations. It has been found that if the magnitude of their positive incremental impact is considered, the DHW parameters can be classified according to the following decreasing order: 1. heat tank losses, 2. flow rate and 3. distribution temperature. Then, for each of the three types of buildings, we established a discrete series of options of electricity consumption reduction by limitation of the DHW parameters values. For further developments, these options can be employed by researchers to build an Energy Efficiency Code applicable to large buildings in West Africa.