NOVELTY - The system (110) has a by-pass line (148) that is provided between outlet (137) of cooling unit (135) and expansion coil (129) of heat exchanger (125) for bypassing the reservoir (138) and delivering the solution directly from the outlet of the cooling unit to the inlet (131) of the expansion coil. A valve (149) arranged in the bypass line is opened to deliver the solution directly from the outlet of the cooling unit to the inlet of the expansion coil of the heat exchanger so as to bypass the reservoir.    USE - Secondary cooling loop system for use in vapor compression air conditioning system of vehicle.    ADVANTAGE - The reservoir in the secondary cooling loop system can be bypassed until the passenger compartment is cooled and then the contents of the reservoir can be subsequently cooled. Hence the passenger compartment of the vehicle can be cooled rapidly.    DETAILED DESCRIPTION - The heat exchanger has another expansion coil (126) for circulating refrigerant along with the expansion coil (129) having inlet and outlet (132) for circulating the refrigerant. The cooling unit having an inlet (136) in fluid communication with the expansion coil (126) of the heat exchanger and an outlet cools the circulating solution. The reservoir having an inlet (140) in fluid communication with outlet of the cooling unit and an outlet (141), stores the solution. A return line is used for returning the stored solution from the reservoir back to the inlet of the expansion coil (129) of the heat exchanger. A connecting line is arranged between the outlet of a cooling coil and the inlet of the reservoir. Another valve (150) is arranged in a connecting line (139) and opened when the other valve is closed to allow the solution to flow into the inlet of the reservoir. A temperature sensor (152) is arranged in passenger compartment for sensing the temperature in the passenger compartment and comparing the temperature with a predetermined temperature, so that valve (149) is opened and the other valve is closed when the temperature in the passenger compartment greater than the predetermined temperature. The temperature in the passenger compartment is communicated to the valve (149) through an electrically conducting wire (153) for opening the valve when the temperature in the passenger compartment passenger compartment is greater than the predetermined temperature. The temperature in the passenger compartment is communicated to the valve (150) through an electrically conducting wire (154) for closing the valve when the temperature in the passenger compartment is greater than the predetermined temperature. The heat exchanger is a counter-current heat exchanger in which refrigerant flows in one direction in the expansion coil (126) and the solution flows in the expansion coil (129) in the opposite direction. The cooling unit is a single evaporator cooling unit or dual evaporator cooling unit. The cooling unit is provided with a front pump having an inlet in fluid communication with the heat exchanger and an outlet. A front cooling unit is arranged in fluid communication with the outlet of the front pump. A rear cooling unit is provided with an inlet and an outlet in fluid communication with the outlet of the front pump. A rear pump is provided with an inlet in fluid communication with inlet of rear pump and an outlet in fluid communication with the bypass line. An INDEPENDENT CLAIM is included for method for bypassing reservoir in secondary cooling loop system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic block diagram of the secondary cooling loop system.    Secondary cooling loop system (110)    Heat exchanger (125)    Expansion coils (126,129)    Expansion coil inlet (131)    Expansion coil outlet (132)    Cooling unit (135)    Cooling unit inlet (136)    Cooling unit outlet (137)    Reservoir (138)    Connecting line (139)    Reservoir inlet (140)    Reservoir outlet (141)    By-pass line (148)    Valves (149,150)    Temperature sensor (152)    Electrically conducting wires (153,154)