Tyre curing is a pivotal stage but also the most energy and time consuming process in tyre manufacturing. An energy efficient tyre curing process will enable reducing the production cost and increase the productivity. The available literature on optimizing the tyre curing process involves using non-conventional energy or mold modifications which are not aligned with the conventional tyre cure press. Therefore, developing an energy efficient tyre curing process is an ongoing research interest. In this study, the effect of twisted tapes and surface extensions on turbulent two-phase fluid flow and heat transfer characteristics of high-temperature steam flow in a circumferential rectangular channel, resembling the external jacket of a tyre curing press is numerically investigated. The results of this study can be utilized to optimize the tyre curing process. The internal flow path of the circumferential rectangular channel is geometrically modified with twisted tapes and surface extensions to enhance the condensation heat and mass transfer rate. The heat transfer performance of all the modified channels obtained from the simulation results are compared with that of the conventional channel. The channel modified with a proposed combination of twisted tapes and surface extensions has the maximum heat and condensation mass flux increment. The simulation results are verified using an in-house experimental study. The external jacket cavity of a tyre cure press is modified as per the proposed design with the maximum heat transfer enhancement, and a mold warm-up study is conducted. The time required to warm the modified mold to a desired temperature is reduced by 33% without an increase in the steam consumption rate when compared with the time required to warm the conventional mold. This reduction in the mold warm-up time can be utilized to increase the productivity rate; an ongoing requirement of the automobile industry.