The H102C Shell and tube exchanger is a simple model that demonstrates the basic principles of heat transfer. The H102C is designed for use with the Heat Exchanger Service Unit H102. The miniature heat exchanger is mounted on the H102 front panel.
The miniature heat exchanger supplied consists of a clear glass shell with end plates through which pass a bundle of seven equally spaced stainless steel tubes. ‘O’ ring seals in the end plates allow the stainless steel tubes to be removed for cleaning if necessary. Coupled to the end plates are end caps that allow hot water from the heater/circulator to pass through all seven tubes and then re-combine to return to the heater/circulator in a closed loop. Cold water from the mains supply passes through the clear glass outer shell and heat is transferred to this from the hot stream. Two baffles are located in the shell to promote turbulence and increase the cold fluid velocity.
In normal operation hot water from the heater/circulator passes into the end cap via a stainless steel braided hose and self-sealing coupling. Its temperature at entry to the heat exchanger is measured by a thermocouple. It then flows through the seven heat exchanger tubes to the opposite end cap and leaves. Its temperature on exit is measured by a similar thermocouple.
The cold water is fed into and out of the heat exchanger via plastic reinforced hoses with self-sealing couplings. Thermocouples measure the cold water inlet and exit temperatures.
