Development of low-pressure electric steam heater

The study was devoted to solving the issue of creating new electric heating devices that can be used in autonomous heat supply systems. The issues were resolved by developing an original low-pressure electric steam heater. The study was aimed at improving the efficiency of heat supply systems for buildings and structures. Given the current trends in the global striving for energy conservation, it cannot be fully realized without the introduction of high-tech and low-energy-consuming electrical equipment. As a result of theoretical studies of a heat pipe with an electric heater, a design of an electrovacuum heating element has been developed. The low-pressure electric steam heater can be used in heat supply systems of autonomous users. Thermal energy transfer is currently accompanied by substantial energy losses since the heat carrier has to pass considerable distances. Switching of the facility to the heating plant is impossible in some cases because of technical problems or significant material costs for laying pipelines. As a result of the study, the dependence of heating the heat pipe at various volumes of the heat carrier and mass of the pipe itself was established. When a certain mass is reached, the temperature of the heating surfaces can reach 70 °C which is considered acceptable. The experimental data obtained have made it possible to develop an electric heater of new generation with a fundamentally new design of the heating element. It combines the efficiency of an electric spiral and comfortable warmth from a traditional radiator. This heater is an explosion and fire-safe and can be integrated into the Smart Home system

Kajian Perhitungan Efisiensi Kerja Mesin Steam Heater di Pabrik Kelapa Sawit Bumi Palma

Mesin steam heater adalah mesin yang berfungsi untuk proses pengeringan kernel di kernel drier dengan bantuan uap (steam) yang akan diubah menjadi udara panas bertemperatur (80-100)ºC. Salah satu persoalan yang sering terjadi pada proses pengeringan ini adalah tidak tercapainya kualitas kadar air (moisture) kernel yang sesuai nilai standar parameter yakni (6-7)%. Proses pengeringan tersebut dipengaruhi oleh tekanan kerja steam dan temperatur steam di mesin steam heater. Maka dari itu, diperlukan penentuan pengaturan tekanan kerja steam di mesin steam heater yang tepat melalui bukaan valve inlet steam dari Back Pressure Vessel (BPV). Pengaturan bukaan valve inlet steam memperoleh nilai tekanan (2,4-2,8) Bar. Dari hasil pengkajian, menyatakan bahwa pengaturan bukaan valve yang tepat untuk menghasilkan moisture kernel yang sesuai standar yakni berada di tekanan kerja steam (2,7-2,8) Bar dengan nilai efisiensi kerja mesin steam heater masing-masing sebesar 75,42% dan 77,67% serta nilai moisture kernel yang diatas standar berkurang dari 38,50% menjadi 34,80%. Dengan adanya penentuan bukaan valve inlet steam yang tepat, dapat dijadikan acuan untuk memperoleh nilai moisture kernel yang lebih rendah lagi atau sesuai dengan nilai standar parameter yang telah ditetapkan.

Design of a 50 MW Pilot Plant for a High Efficiency Steam Cycle

A novel steam cycle promises reasonable efficiency gains compared with conventional cycles. The efficiency gains are achieved with a double water/steam loop, enabling high temperatures of heat input. To check the operability of the cycle, a feasibility study for a 50 MW pilot plant has been carried out. This paper gives a survey of the thermodynamics of the pilot plant followed by results achieved for two of the most crucial components, the steam heater and the high temperature turbine.