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Edec Development develops, sells and delivers energy efficient control systems for construction and marine industries. The solutions make use of new technical solutions, in particular the frequency inverter technology. Energy saving and energy-efficient buildings have come into public awareness as an important element in combating climate change. In addition to environmental protection, companies and private persons can achieve financial savings by investing into new technology. Often, saving the environment has meant more expensive solutions. This is not necessarily the case. Edec Development's solutions take advantage of the use of renewable energy, waste energy and above all, doing things smarter. Edec Development's products and services are involved in all stages of energy use: energy production, storage, use and reclamation. The solutions are a combination of new concepts, intelligent control systems and utilization of inverter technology. PPMS - Propulsion Power Management System A modern ship often uses so called electric diesel propulsion. This means that the ship's generators, powered by diesel engines produce electricity to the power grid and the pod propellers ‘engines use it. These propulsion lines are usually the largest consumers of electricity in ships. Since the electrical network is designed to match the consumption of energy, it can easily be disturbed. When the load is high and rapid changes take place, or the power plant operation is disturbed, a need for a mechanism to guarantee the security of electricity in the different systems arises. PPMS works between the ship's power plant and the propulsion motors adjusting the available power and propulsion power with each other. Should the power production of generators get reduced or should there be a sudden increase in electricity consumption of the ship, PPMS limits the propulsion power stabilizing the power grid. Similarly, if the propulsion power required declines suddenly, PPMS limits the power plant production. HCPMS – intelligent heating and cooling In traditional solutions heat pumps are used typically either for heating or cooling solely. This means, that the heat or cold produced by the ‘passive´ side of the heat pump is transferred through a heat exchanger into air, sea or soil. edec Development's new control system enables combined production of heat and cold with one heat pump.The system is particularly suitable for ships, hotels, regional heating and cooling, the production of residential, industrial and office buildings, etc. Edec Development has developed a system for water to water type heat pumps, where the compressor produces either heat or cold (active side) and the heat or cold coming from the passive side is utilized by an intelligent control system. The control system consists of a programmable logic controller (PLC) and pumps and valves driven by a frequency converter. Adjustment is based on the measured temperatures or temperature information given by the upper automation. If the compressor´s primary operating mode is changed, the earlier active side changes to inactive. The consumption of heat and cold are rarely in balance; then the surplus energy is transferred either to a storage tank, water or land/bedrock. The water pumps and 3-way valves in the system are controlled by frequency converters for optimized flow and economy. For larger entities we have developed a system consisting of multiple heat pumps. 2 to 3 compressors can form one unit controlled by one master PLC. The control system calculates the required number of heat pumps to start, then the operating modes for each of the pumps. The system produces both the heat and the cold needed in the premises. If necessary, additional compressors are started or shut down. The control system also monitors the compressor units´ operating hours, and equalizes them. |
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