From the smallest of domestic properties to the largest of commercial and industrial complexes requiring remote access and data storage / retrieval, NuVision Energy Services can provide the intelligent solution.
These systems are advanced, micro-processor based energy management systems which utilise and combine time proven techniques and modern data processing to intelligently control boilers burners, radient and space heaters to reduce energy consumption and C02 emissions.
The systems use “Variable Thermal Response” to intelligently manage the heating and warm air system and ensure that it economically, but efficiently, meets the performance requirements of the heating system. It takes account of all changeable factors including level of demand, boiler flow and return temperatures, external and internal temperatures.
Other features include temperature compensation, on/off optimisation, frost protection, night time controls, hot water priority and temperature control, multi boiler step control and sequencing, digital programming, security coding and override facility.
Our system’s objective is: “To fire the least number of boilers, at the lowest possible temperature, for the shortest possible time, without compromising specified space temperature set points, or mechanical integrity”.
Specifically the NVE management system reduces energy consumption by the following:
Optimisation
Utilising data supplied from internal and external temperature sensors (RF or hard wired), the NVE system will calculate the optimum plant “start” time. The same software process is also used in calculating the optimum “off’ times (plant “end” time). Night set back can be incorporated as part of the overall optimisation function. The NVE Systems manages night set back via optimised temperature reductions within variable time periods, as opposed to fixed day and night switching periods.
Compensation
Compensation is defined as the increase in boiler flow temperature that is required to offset a decrease in external air temperature. Using data from external and flow temperature sensors, the NVE Systems utilises its self adaptive compensation algorithms to calculate the highest possible compensation ratio (also defined as the lowest possible boiler flow temperature); whilst still maintaining the client’s required internal temperature set point.
Sequencing
Sequencing calculates the required number of boilers to meet any given load demand. The NVE Systems, through self adaptive sequencing algorithms, manages the boilers in three control stages to determine: The total number of boilers needed to match the load. The number of boilers to run continuously. The firing time of the remaining (non-continuous) boiler by calculating the boiler percentage firing rate, each and every firing cycle. The calculated flow set point is maintained within a pre-set, narrow temperature band. Managing the boilers in this fashion eliminates dry cycling and also spreads the load over all boilers thus reducing boiler wear.
VTR (self learning)
The NVE system is an intelligent self learning device which once commissioned calculates optimum firing periods based on demand and demand times so as to ensure that the required internal temperature is maintained with the least use of the boilers.