Heat exchanger using LNG thermal energy for NGV

摘要

In the present invention, it is applied to transport various frozen foods or low temperature foods, and is discharged when LNG is supplied from the fuel tank to the engine in a refrigeration tower vehicle using LNG (Liquefied Natural Gas) as fuel. LNG cooling heat is circulated inside the container in which food is accommodated to allow heat exchange to occur so that the internal temperature of the container can be rapidly cooled, so that energy efficiency can be remarkably improved, and fuel cost compared to diesel fuel can be significantly reduced. A heat exchange device using LNG cooling heat of a new LNG fuel refrigeration tower vehicle is disclosed. The present invention includes a housing having a space portion formed therein and a single or a plurality of through-holes formed on the front surface thereof; Circulation operation in which LNG cooling heat generated when LNG of the refrigerating tower is supplied from the fuel tank to the engine is vaporized by heat exchange with indoor air, which is installed in the space on the housing to cool the interior of the container and then recover it in a heated state. In order to achieve this repeatedly, a cooling/heat circulation pipe for circulating after LNG cooling heat has been introduced is installed in a form that is bent or wound multiple times, and heat exchange between indoor air and cold heat is quickly achieved on the outer circumference of the cooling/heat circulation pipe. A heat exchange unit configured to be fitted and coupled to a plurality of heat dissipating fins to be fitted; A cold heat supply pipe installed at one side of the housing in communication with one end of the cold heat circulation pipe on the heat exchange part to supply LNG cold heat supplied from the outside to the heat exchange part; It is installed in communication with the other end of the cooling and heat circulation pipe on the heat exchanger on one side of the housing corresponding to the position opposite to the cooling and heat supply pipe to circulate the heat exchanger to recover the LNG cold heat warmed by heat exchange with indoor air. A cold and heat recovery pipe; A fan motor forcibly discharging cool air generated from the heat exchange unit to the outside while being rotated according to the application of a current while being installed inside the through hole formed in the front of the housing; A safety grill installed outside the through hole corresponding to the outside of the fan motor to prevent the user's body from contacting the user's body while driving the fan motor to rotate, and to prevent foreign substances from flowing into the interior; And a control unit for controlling whether the fan motor is driven or not and a circulation operation of LNG cooling and heat.