Cold energy utilizing device for liquefied natural gas refrigerator truck

Abstract

The invention discloses a cold energy utilizing device for a liquefied natural gas refrigerator truck. The device comprises a fuel gas system and a refrigerating system, wherein the fuel gas system comprises an LNG (liquefied natural gas) storage tank, a plate-fin heat exchanger and a water tank, wherein the LNG comes out of the storage tank, enters the plate-fin heat exchanger to exchange heat with nitrogen, further enters the water tank to exchange heat with the water, and enters an engine to act as the fuel gas. The refrigeration system comprises two coil pipes; the nitrogen is divided into two ways after coming out of the heat exchanger, wherein one nitrogen enters the coil pipe at a refrigeration carriage to exchange heat with the cold air, and the cold air subjected to the heat exchange provides cold energy to the carriage; and the other nitrogen enters the coil pipe in a cab to exchange heat with the air, so as to provide cold air. According to the cold energy utilizing device, the refrigerator truck is provided with the fuel gas, and at the same time the refrigeration carriage and the cab are provided with the cold air of better quality; and the waste of energy is reduced.

Description

technical field [0001] The invention belongs to the technical field of cold energy utilization, and in particular relates to a cold energy utilization device for a liquid natural gas refrigerated vehicle. Background technique [0002] Refrigerated trucks are an important means of refrigerated transportation and an important link in the cold chain. The economic benefits of refrigerated trucks lie in ensuring the quality of goods transported and avoiding economic losses due to rot and deterioration of perishable goods during transportation. Rapid mechanical refrigerated trucks are a recent research hotspot. The cold energy of the refrigerated truck compartment mainly comes from the cold plate refrigeration system. The cooling time is 8 to 13 hours. The refrigerant produces a cooling capacity of 126,000 kW, and the electricity required for 6 days of operation is 3,000 kW. A European refrigerated vehicle manufacturer has developed better and better thermal insulation refrigerate...

AI Technical Summary

Problems solved by technology

[0004] There are some deficiencies in the supply of fuel and cooling capacity for refrigerated vehicles currently in use. LNG refrigerated vehicles are not popular enough, and the exhaust gas after combustion causes pollution to the atmospheric environment. At the same time, oil reserves continue to decrease, and the energy crisis also affects the development of refrigerated vehicles.

LNG refrigerated vehicles use LNG as a new energy source, which has certain advantages. However, at present, the use of LNG cold energy is very little. Utilizing this part of energy can reduce operating costs

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