Control model of energy flow in agricultural biogas plant using SCADA software
The article presents a model of controlling the flow of energy in agricultural biogas plant. Control model was made on the basis of a shared project biogas power plant. Biogas plant control algorithm modeled using SCADA software and an analysis of cost performance and life of the investment have been presented.
SCADA System for Management and Visualization in Generation of Renewable Energy from Biomass
In the paper is described the project of one of the first SCADA (supervisory control and data acquisition) system for biogas installations in Bulgaria. SCADA is a type of industrial control system (ICS) as computer-controlled system for monitoring and control of technological processes in biogas installations. Development of SCADA forbiogas plants is new scientific and industrial implementations of the remote process control and supervision in generation of renewable energy from biomass. The system is based on the programmable logic controllers (PLC) and human-machine interface (HMI). The system is designed for producing a huge volume of biogas, electricity and thermal energy with not very high amount of investment. The proposed system guarantees high reliability and productivity, low own consumption and modern monitoring and control of the technology parameters.
Complex thoracic vascular injury repair using deep hypothermia and circulatory arrest.
A 61-year-old man with a penetrating injury to the innominate artery, left common carotid artery, and left subclavian artery at their origins from the aortic arch with associated injuries to both innominate veins and an innominate artery to vein fistula after a single stab wound is described. The patient was managed successfully using cardiopulmonary bypass together with deep hypothermia and circulatory arrest. Presentation and management are discussed.