Authors: G.M. Dubov, S.A. Nokhrin, D.M. Yakobson, D.A. Boronenkov

Title of the article: Thermal Calculation of a Liquefied Natural Gas Evaporator BelAZ-75131 Gas-Diesel mining Dump Truck

Year: 2026, Issue: 4, Pages: 104-112

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622.684

DOI: 10.26730/1816-4528-2026-4-104-112

Abstract: Reducing the cost of mining minerals, and coal in particular, is an urgent task in today's difficult conditions of fierce competition and sanctions pressure. One of the ways to reduce the cost of extracting mineral resources is to use cheaper energy resources used for transporting rock mass by quarry dump trucks. Currently, a project to equip BelAZ mining dump trucks with cryogenic on-board fuel systems (CBTS) has become widespread in Kuzbass, allowing them to operate in a dual-fuel (gas-diesel) mode using liquefied natural gas (LNG) as a partial replacement for diesel fuel. One of the key elements of the CBTS of the BelAZ 75131 series gas-diesel mining dump truck is a liquefied natural gas evaporator. In CBTS, the evaporator performs one of the key functions, namely, the conversion of liquefied natural gas to a vaporous (gaseous) state and its further overheating to the required positive temperature. To effectively convert liquefied natural gas to a vapor state, taking into account the different percentage of diesel fuel replacement with natural gas, it is necessary to ensure the necessary heat exchange area in the evaporator. In this regard, in the presented work, a thermal calculation of a three-circuit evaporator of liquefied natural gas is carried out, which includes: calculation of the mass heat of combustion of natural gas; calculation of thermal power; volume and mass consumption of vaporous natural gas; calculation of the total amount of heat required for evaporation and overheating in the methane evaporator. The obtained values made it possible to obtain the required heat exchange area of the tubular elements in the evaporator with 30% and 50% substitution of diesel fuel with natural gas.

Key words: BelAZ mining dump truck gas-diesel mode of operation gas engine fuel liquefied natural gas cryogenic on-board fuel system evaporator

Receiving date: 12.06.2026

Approval date: 01.09.2026

Publication date: 27.08.2026

CITE DOWNLOAD