Abstract:
Distilled water in the laboratory is highly important since it is a basic requirement in the lab
work and/or research. The large use of distilled water in the Faculty of Mathematics and Natural Sciences
University of Lambung Mangkurat (FMIPA ULM) obliged to depend on its own by providing the
equipment to produce distilled water. The efficiency of water is low during producing one liter distilled
water due to 35 liters is needed. Several studies have conducted focusing on the energy efficiency and the
use of alternative energy in the distilled water production. Efficiency is not only limited on the heating
energy sources, but also the cooling component. One of the attempts is modifying the cooling water
circulation in the distillation equipment. It aimed that the cooling water is not wasted but is returned to the
circuit. In this study, a cooling water circulation modification was carried out by adding a radiator set,
submersible pump and storage tank. The distilled water produced from this circuit will be compared with
distilled water from distillation equipment without modification. The parameters compared which are:
temperature, volume, electrical conductivity and pH. Our research results show that the modified
distillation equipment series is feasible to apply since the electrical conductivity of the resulting distilled
water is lower than before modification process and also the sediment attached to the boiler wall is formed
slower than the distillation equipment without modification. With the need for a lower volume of raw water,
a series of modified distillation equipment is also suitable for use in the dry season or during water
distribution is not smooth
