Going digital for the environment
Skandinaviska Enskilda Banken (SEB) is a major Swedish financial group for corporate customers, institutions and private individuals with headquarters in Stockholm.
An uninterruptible power supply (UPS) is an electrical system containing storage systems (e.g. batteries, flywheels) capable of supplying high-quality electrical power without interruptions. The input of the UPS interface is connected to the main electrical supply, and the output is connected to the customer electrical load.
Seriously, voltage optimisation rocks!
Voltage management is an umbrella term for various technologies aimed at optimising, stabilising, regulating, or plain reducing the amount of volts needed to run equipment.
The implemented measure:
Optimizes the operating voltage to the required value, depending on the consumption at each stage, stabilizing the overvoltage and undervoltage in the consumer's network
Filters distortion of harmonics and interharmonic frequencies to the minimum level
Turning over a page in resource saving
A high-efficiency motor (HEM) is an electric motor than performs above mandatory minimum. New materials, better design, and better manufacturing have led to major improvements in motor efficiency overall.
Savings realised by using HEMs can quickly outweigh the purchase and installation costs because these modern motors cost less to run than conventional units. This means the purchase costs can be recuperated during its operational life.
When running at low load, electric motors are less efficient. A motor power optimiser (also known as load sensing optimisers) could save between 5 % and 15 % on electricity.
Motor optimisers are solid-state devices that automatically monitor the load on an electric motor. Under low load conditions, they reduce the voltage.
Flat belt drives are simple mechanisms that enable power from a rotational power source (e.g. electric motor or combustion engine) to be transferred to rotating machinery. Previously, flat belt drives had problems (especially with high tension and alignment). However, improved designs and advances in materials now mean that both low and high-power transmission is efficient using flat belt drives.
Compared to V-belt drives, flat belt drives are 2.5-3 % more efficient, and investment costs can be recouped in a few years. The advantages of using flat belt drives are:
VSDs prove that speed really is relative after all
Variable speed drives (VSDs) – also known as drive frequency converters, adjustable speed drives, or inverters – are an increasingly popular measurement and control system in industry.
VSDs can adjust electricity supply to an AC induction motor, automatically and accurately changing its speed and torque output to match real-time demand on the machine.
Result
Air source heat pumps… an absorbing proposition
Air source heat pumps absorb heat from the outside air. This heat can subsequently be used to warm radiators, air convectors and water, or in other heating systems. The process lowers fuel bills, cuts carbon emissions, and requires minimal maintenance.
The way it works is, ambient heat is absorbed at low temperatures into a fluid that passes through a compressor and generates higher-temperature heat, which is channelled through the heating circuit.
A great introduction to ground and water source heat pumps
Ground and water source heat pumps (GSHP) are easy to run once installed and provide low-carbon heating or cooling. Average reduction in CO2 emissions are reported to be from 25 % to 70%. These reductions depend on the use of GSHP - either for cooling, heating, or both. These systems offer the benefits of reduced running and maintenance costs, and overall energy bills, which offsets the up-front capital investment that is often higher than for conventional systems.