The investigation of heat transfer between a single droplet and a vapor-gas mixture at different Knudsen numbers of growing droplet is presented. The influence of the interphase heat transfer on the behavior of macroparameters and the distribution function of droplets was studied using the results obtained for bulk condensation of vapor-gas mixture flow in a nozzle. A comparison of results obtained within the frames of general formulation and ones following from the certain simplifying assumptions on the droplets temperature was carried out for the free molecular regime of droplets growth. (C) 2011 Elsevier Ltd. All rights reserved.