The present work proposes a liquid-sensible heat storage setup for testing thermal oils as sensible heat storage materials for short-term low-temperature applications. The system consists of a liquid bath filled with thermal oil, in which hot water from the solar collector enters the system via a heat exchanger immersed in the liquid bath. The heat transfer process occurs between the hot water flowing through the heat exchanger and thermal oil in the bath. During the discharge process, cold water from the distributing circuit passes through the same heat exchanger, absorbs heat from the thermal oil and is ducted away for later use in another application. The effect of heat exchanger tube length on the duration of the complete storage -removal cycle is investigated. Also, the effects of tube length and cold water mass flow rate on the outlet temperature of the heat transfer fluid of the distributing circuit has been studied. Under the same operating conditions, thermal oils store more thermal energy than water, but lose this heat more rapidly. Moreover, the results show that the effect of heat exchanger tube length is negligible when the tube length exceeds 3 m.