The paper presents application of the nodeless Trefftz method to calculate temperature of the heating foil and the insulating glass pane during continuous flow of a refrigerant along a vertical minichannel. Numerical computations refer to an experiment in which the refrigerant (FC-72) enters under controlled pressure and temperature a rectangular minichannel. Initially its temperature... https://allfixelectricales.shop/product-category/sump-hose/