TY - JOUR
TI - Study on thermal insulation of liquefied natural gas cryogenic road tanker
AU - Lisowski Edward
AU - Lisowski Filip
JN - Thermal Science
PY - 2019
VL - 23
IS - 14
SP - 1381
EP - 1391
PT - Article
AB - The tanks designed for liquefied natural gas transport must be thermally  insulated from the environment due to the low condensing temperature of the  gas. The effectiveness of thermal insulation significantly affects the  tank's operating parameters and its operating costs. As there is no perfect  insulation, there is a need for analyses that would determine its  suitability in specific applications. In this paper the issue of heat  transfer through double-walled cryogenic tanks with evacuated insulation  system was discussed. Afterwards the study of insulation variants of  liquefied natural gas cryogenic road tanker was presented. The use of  several layers of insulation made of modern and efficient materials such as  aero-gel and fiberglass or the use of multi-layer isolation has been  considered and compared to the use of perlite powder. The heat flux through  insulation systems was tested for different variants of evacuated insulation  under residual gas pressure of 10-1 Pa, 10-3 Pa, and 100 kPa. Finally, for  selected insulation variants, the heat leakage was tested for 50 m3  liquefied natural gas road tanker. The investigation of heat-flow for the  transient thermal analysis was performed by applying finite element method.  The aim of the study was to determine the variant of insulation system with  the relatively low heat leakage to the tank and low cost of materials and  vacuum production.